Cancer represents a serious public health concern and, for centuries, has been a leading cause of death around the globe. To improve the clinical outcome and survival rate of cancer patients, regular screening, surveillance programs, and early intervention are widely recognized as the best methods used in cancer diagnosis and therapy. Conventional tumor therapies such as chemotherapy, radiotherapy, and surgery have proved successful, but also cause a variety of serious side effects to cancer patients during treatment. To improve treatment efficacy and reduce side effects, further efforts are now devoted to better identify different cancer therapeutic options that are effective, affordable, and acceptable to patients. Meanwhile, the development of non-invasive imaging technologies and image-guided tumor therapies is indispensable to improve the survival rate of cancer patients.

The development of nanoscaled theranostic agents that integrate diagnosis and therapy for effective personalized precision medicine has obtained tremendous attention in the past several decades. By virtue of their real-time diagnostic capability, theranostic platforms can identify the location of a tumor, detect the accumulation of theranostic agents, and monitor the therapeutic response as well as destroy tumors with higher specificity and sensitivity.

To date, conjugated polymers as organic π-conjugated macromolecules have been explored as optically and electronically active materials for versatile optoelectronic devices and as nanoprobes for various biomedical applications. Specifically, as a novel category of photonic nanomaterials, π-conjugated polymer nanoparticles, also known as semiconducting polymer nanoparticles (SPNs) have attracted great interest as fluorescent probes for cell tracking, tumor imaging, ultrafast hemodynamic imaging, and chemiluminescence imaging of drug-induced injury and neuroinflammation. This series of applications is most notably due to the excellent properties of high absorption, control dimensions, and good biocompatibility. More importantly, π-conjugated polymer nanoparticles exhibit a high photothermal conversion efficiency, responsible for converting light energy to thermal energy and heat deposition in tumors, ultimately allowing for PTT. Meanwhile, π-conjugated polymer nanoparticles exhibit an extraordinary ability to convert light energy into acoustics. Therefore, they may also serve as a flexible nanoplatforms for in vivo PA of tumors by responsive to reactive oxygen species (ROS), enzyme, and pH.

 

Selected Publications

• “Rational Design of New Aqueous Conjugated Polymer Nanoparticles as Theranostic Agents of Breast Cancer”
  Koralli, P.; Tsikalakis, S.; Goulielmaki, M.; Arelaki, S.; Muller, J.; Nega, A. D.; Schiza, A.; Herbst, F.; Gregoriou, V. G.; Dimitrakopoulou-Strauss, A.; Wiemann, S.; Chochos, C. L.* Mater. Chem. Front. 2021, 5, 4950-4962. (Impact Factor 2020: 6.482)
• “New Conjugated Polymer Nanoparticles with High Photoluminescence Quantum Yields for Far-red and Near Infrared Fluorescence Bioimaging”
  Koralli, P.; Nega, A. D.; Vagiaki, L. E.; Pavlou, A.; Siskos, M. G.; Dimitrakopoulou-Strauss, A.; Gregoriou, V. G.; Chochos, C. L.* Mater. Chem. Front. 2020, 4, 2357 - 2369. (Impact Factor 2020: 6.482)

 

a. Development of conjugated polymers for the fabrication of efficient organic photodetectors (OPDs) and their applicability in the detection of weak fluorescent biological signals involved in studies of cellular activity function

This is achieved by manifested the OPDs sensitivity and temporal resolution in the measurement of calcium signals from chemical fluorophores (Fluo-4) and genetically encoded calcium indicators (GECI) associated to changes in intracellular calcium concentration in physiological and pathophysiological conditions in-vitro and ex-vivo for the first time.

 

b. Infrared Organic Photodetectors employing Ultralow Bandgap Polymer for Biometric Monitoring

Recent efforts in the field of organic photodetectors (OPD) have been focused on extending broadband detection into the near-infrared (NIR) region. Here, we compare two blends of an ultra-narrow bandgap push-pull polymer TQ-T with state-of-the-art non-fullerene acceptors, IEICO-4F and Y6, to obtain OPDs for sensing in the NIR beyond 1100 nm, which is the cut off for benchmark Si photodiodes. We observed that TQ-T:IEICO-4F device has a superior IR responsivity (0.03 AW-1 at 1200 nm and -2V bias) and can detect infrared light up to 1800 nm, while TQ-T:Y6 blend showed lower responsivity of 0.01 AW-1. The lower dark current in reverse bias obtained in TQ-T:IEICO-4F lead to D* of 109-1010 Jones in the UV-VIS-NIR range, while TQ-T:Y6 shows D* of 107-108 Jones. In-depth photophysics and the morphology analyses links the advanced performance of TQ-T:IEICO-4F to the faster charge separation and a favourable homogenous mixing of the donor-acceptor phases. We demonstrate an application of these devices as biometric sensors in real time heart rate monitoring via photoplethysmography, utilising infrared light.

 

Selected Publications

• “Infrared Organic Photodetectors Employing Ultralow Bandgap Polymer and Non-fullerene Acceptors for Biometric Monitoring”
  Jacoutot, P.; Scaccabarozzi, A. D.; Zhang, T.; Qiao, Z.; Aniés, F.; Neophytou, M.; Bristow, H.; Kumar, R.; Moser, M.; Nega, A.; Dimitrakopoulou-Strauss, A.; Gregoriou, V. G.; Anthopoulos, T. D.; Heeney, M.; McCulloch, I.; Bakulin, A. A.; Chochos, C. L.; Gasparini, N. Small 2022, 18, 2200580. (Impact Factor 2020: 13.281).
• “Monitoring Fluorescent Calcium Signals in Neural Cells with Organic Photodetectors” 
  Rezaei-Mazinani, S.; Ivanov, A. I.; Biele, M.; Chochos, C. L.; Rutz, A.; Gregoriou, V. G.; Avgeropoulos, A.; Tedde, S. F.; Bernard, C.; O’Connor, R.; Malliaras, G. G.; Ismailova, E. J. Mater. Chem. C 2019, 7, 9049-9056. (Impact Factor 2020: 7.393).

2022

• “Porous organic polymers in solar cells”
  Zhang, T.; Gregoriou, V. G.; Gasparini, N.; Chochos, C. L. Chem. Soc. Rev. 2022, 51, 4465-4483. (Impact Factor 2020: 54.564)
• “Surface and grain boundary defect passivation in perovskite solar cells using an amino-functionalized BODIPY fluorophore”
  Soultati, A.; Tountas, A.; Fakharuddin, A.; Skoulikidou, M.-C.; Verykios, A.; Armadorou, K.-K.; Tzoganakis, N.; Vidali, V. P.; Sakellis, I.; Koralli, P.; Chochos, C. L.; Petsalakis, I.; Nikoloudakis, E.; Palilis, L. C.; Filippatos, P.-P.; Argitis, P.; Davazoglou, D.; Yusoff, A. R. b. M.; Kymakis, E.; Coutsolelos, A. G.; Vasilopoulou, M. Sustain. Energy Fuels 2022, 6, 2570-2580. (Impact Factor 2020: 6.367)
• “Enhancing the lifetime of inverted perovskite solar cells using a new hydrophobic hole transport material”
  Loizos, M.; Tountas, M.; Tzoganakis, N.; Chochos, C. L.; Nega, A.; Schiza, A.; Polyzoidis, C.; Gregoriou, V. G.; Kymakis, E. Energy Adv. 2022, 1, 312-320. (Impact Factor 2020: New)
• “Seasonal evaluation of floating microplastics in a shallow Mediterranean coastal lagoon: Abundance, distribution, chemical composition, and influence of environmental factors”
  Simantiris, N.; Vardaki, M. Z.; Koralli, P.; Chochos, C. L.; Gregoriou, V. G.; Kourkoumelis, N.; Avlonitis, M. Estuar. Coast. Shelf Sci. 2022, 107859. (Impact Factor 2020: 2.929)
• 75) “Infrared Organic Photodetectors Employing Ultralow Bandgap Polymer and Non-fullerene Acceptors for Biometric Monitoring”
  Jacoutot, P.; Scaccabarozzi, A. D.; Zhang, T.; Qiao, Z.; Aniés, F.; Neophytou, M.; Bristow, H.; Kumar, R.; Moser, M.; Nega, A.; Dimitrakopoulou-Strauss, A.; Gregoriou, V. G.; Anthopoulos, T. D.; Heeney, M.; McCulloch, I.; Bakulin, A. A.; Chochos, C. L.; Gasparini, N. Small 2022, 18, 2200580. (Impact Factor 2020: 13.281)

 

2021

• “Ultra-high power efficiency blue organic light-emitting diodes with below-bandgap electroluminescence”
  Vasilopoulou, M.; Yusoff, A. R. bin M.; Daboczi, M.; Conforto, J.; Gavim, A. E. X.; da Silva, W. J.; Macedo, A. G.; Soultati, A.; Schneider, F. K.; Dong, Y.; Jacoutot, P.; Rotas, G.; Jang, J.; Vougioukalakis, G. C.; Chochos, C. L.; Kim, J.-S.; Gasparini, N. Nat. Commun. 2021, 12, 4868. (Impact Factor 2020: 14.919)
• “Rational Design of New Aqueous Conjugated Polymer Nanoparticles as Theranostic Agents of Breast Cancer”
  Koralli, P.; Tsikalakis, S.; Goulielmaki, M.; Arelaki, S.; Muller, J.; Nega, A. D.; Schiza, A.; Herbst, F.; Gregoriou, V. G.; Dimitrakopoulou-Strauss, A.; Wiemann, S.; Chochos, C. L.* (co-corresponding author) Mater. Chem. Front. 2021, 5, 4950-4962. (Impact Factor 2020: 6.482)
• “Green Inks for the Fabrication of Organic Solar Cells: A Case Study on PBDTTPD:PC61BM bulk-heterojunctions”
  Sprau, C.; Cruz, A. M.; Pérez, L. B.; Molina, L.; Wagner, M.; Chochos, C. L.; Pirriera, M. D.; Colsmann, A. Advanced Energy and Sustainability Research 2021, 2, 2100043. (Impact Factor 2020: New)
• “PEDOT:PSS:sulfonium salt composite hole injection layers for efficient organic light emitting diodes”
  Verykios, A.; Pistolis, G.; Bizas, L.; Tselios, C.; Tsikritzis, D.; Kennou, S.; Chochos, C. L.; Mouzakis, D. E.; Skandamis, P. N.; Yusoff, A. R. bin M.; Palilis, L. C.; Argitis, P.; Vasilopoulou, M.; Soultati, A. Org. Electron. 2021, 93, 106155. (Impact Factor 2020: 3.721).
• “Adjusting the Interfacial States Energy in Organic Photovoltaics for Maximum Efficiency”
  Gasparini, N.; Camargo, F. V. A.; Frühwald, S.; Nagahara, T.; Classen, A.; Roland, S.; Wadsworth, A.; Gregoriou, V. G.; Chochos, C. L.; Neher, D.; Salvador, M.; Baran, D.; McCulloch, I.; Görling, A.; Lüer, L.; Cerullo, G.; Brabec, C. J. Nat. Commun. 2021, 12, 1772. (Impact Factor 2020: 14.919)
• “Far-Red to Near Infrared Emissive Aqueous Nanoparticles Based on a New Organic Material with Three BODIPY Dyes at the Periphery of the Core: A Combined Experimental and Theoretical Study.”
  Squeo, B. M.; Avramopoulos, A.; Nega, A. D.; Pavlou, A.; Siskos, M. G.; Koralli, P.; Schiza, A.; Dimitrakopoulou-Strauss, A.; Gregoriou, V. G.; Chochos, C. L.* (co-corresponding author) Electron. Mater. 2021, 2, 24-38. (Impact Factor 2020: New)

 

2020

• “Structural study of hydroxylpropyl-methyl cellulose microemulsion based gels used for biocompatible encapsulations”
  Vassiliadi, E.; Mitsou, E.; Avramiotis, S.; Chochos, C. L.; Pirolt, F.; Medebach, M.; Glatter, O.; Xenakis, A.; Zoumpanioti, M. Nanomaterials 2020, 10, 2204. (Impact Factor 2020: 5.076)
• “The role of exciton lifetime for charge generation in organic solar cells at negligible energy level offsets”
  Classen, A.; Chochos, C. L.; Lüer, L.; Gregoriou, V. G.; Wortmann, J.; Osvet, A.; Forberich, K.; McCulloch, I.; Heumueller, T.; Brabec, C. J. Nat. Energy 2020, 5, 711 - 719. (Impact Factor 2020: 60.858)
• “High Performance Conjugated Terpolymers as Electron Donors in Nonfullerene Organic Solar Cells”
  Paleti, S. H. K.; Gasparini, N.; Chochos, C. L.* (co-corresponding author); Baran, D. J. Mater. Chem. C 2020, 8, 13422 - 13429. (Impact Factor 2020: 7.393).
• “New Conjugated Polymer Nanoparticles with High Photoluminescence Quantum Yields for Far-red and Near Infrared Fluorescence Bioimaging”
  Koralli, P.; Nega, A. D.; Vagiaki, L. E.; Pavlou, A.; Siskos, M. G.; Dimitrakopoulou-Strauss, A.; Gregoriou, V. G.; Chochos, C. L.* (corresponding author) Mater. Chem. Front. 2020, 4, 2357 - 2369. (Impact Factor 2020: 6.482)
• “Revealing the structural effects of non-fullerene acceptors on the performances of ternary organic photovoltaics under indoor light conditions”
  Singh, R.; Duan, T.; Kan, Z.; Chochos, C. L.; Kini, G. P.; Kumar, M.; Park, J.; Lee, J.; Lee, J.-J. Nano Energy 2020, 75, 104934. (Impact Factor 2020: 17.881)
• “Unravelling the complex nanomophology of ternary organic solar cells with multimodal analytical transmission electron microscopy”
  Rechberger, S.; Gasparini, N.; Singh, R.; Kim, M.; Chochos, C. L.; Gregoriou, V. G.; Cho, K.; Brabec, C. J.; Ameri, T.; Spiecker, E. Sol. RRL 2020, 4, 2000114. (Impact Factor 2020: 8.582)

 

2019

• “Highly Efficient Indoor Organic Solar Cells by Voltage Loss Minimization through Fine-Tuning of Polymer Structures”
  Singh, R.; Chochos, C. L.* (co-corresponding author); Gregoriou, V. G.; Nega, A. D.; Kim, M.; Kumar, M.; Shin, S.-C.; Kim, S. H.; Shim, J. W.; Lee, J.-J.ACS Appl. Mater. Interfaces 2019, 11, 36905 – 36916. (Impact Factor 2020: 9.229).
• “Monitoring Fluorescent Calcium Signals in Neural Cells with Organic Photodetectors”
  Rezaei-Mazinani, S.; Ivanov, A. I.; Biele, M.; Chochos, C. L.; Rutz, A.; Gregoriou, V. G.; Avgeropoulos, A.; Tedde, S. F.; Bernard, C.; O’Connor, R.; Malliaras, G. G.; Ismailova, E. J. Mater. Chem. C 2019, 7, 9049-9056. (Impact Factor 2020: 7.393).
• “Current Status, Challenges and Future Outlook of High Performance Polymer Semiconductors for Organic Photovoltaics Modules”
  Chochos, C. L.* (co-corresponding author) ; Spanos, M.; Katsouras, A.; Tatsi, E.; Drakopoulou, S.; Gregoriou, V. G.; Avgeropoulos, A. Prog. Polym. Sci. 2019, 91, 51 - 79. (Impact Factor 2020: 29.190).
• “Effect of Aryl Substituents and Fluorine Addition in a High Efficiency Indacenodithienothiophene-alt-Quinoxaline π-Conjugated Polymer on the Optoelectronic Properties and Organic Solar Cell Performance”
  Tatsi, E.; Spanos, M.; Katsouras, A.; Squeo, B. M.; Fall, S.; Heiser, T.; Lévêque, P.; Gregoriou, V. G.; Avgeropoulos, A.; Leclerc, N.; Chochos, C. L.* (co-corresponding author) Macromol. Chem. Phys. 2019, 220, 1800418. (Impact Factor 2020: 2.527).
• “Thermal Stabilization of the Bulk-Heterojunction Morphology in Polymer:Fullerene Solar Cells Using a Bisazide Cross-Linker”
  Landerer, D.; Sprau, C.; Baumann, D.; Pingel, P.; Leonhard, T.; Chochos, C. L.; Zimmermann, D.; Krüger, H.; Janietz, S.; Colsmann, A. Solar RRL 2019, 3, 1800266. (Impact Factor 2020: 8.582)

 

2018

• “Experimental and Theoretical Investigations on the Optical and Electrochemical Properties of Donor-Acceptor-Donor Small Molecules Toward a Universal Model”
  Chochos, C. L.* (co-corresponding author); Chavez-Vasquez, P.; Lévêque, P.; Heiser, T.; Spanos, M.; Tatsi, E.; Katsouras, A.; Avgeropoulos, A.; Gregoriou, V. G.; Leclerc, N. J. Chem. Phys. 2018, 149, 124902/1-9. (Impact Factor 2020: 3.488).
• “Suppressing the Surface Recombination and Tuning the Open Circuit Voltage of Polymer/Fullerene Solar Cells by Implementing an Aggregative Ternary Compound”
  Galli, D.; Gasparini, N.; Forster, M.; Eckert, A.; Widling, C.; Killian, M. S.; Avgeropoulos, A.; Gregoriou, V. G.; Scherf, U.; Chochos, C. L.; Brabec, C. J.; Ameri, T. ACS Appl. Mater. Interfaces2018, 10, 28803 - 28811. (Impact Factor 2020: 9.229).
• “Electron-transporting Thiazole-based polymer synthesized through direct (hetero)arylation polymerization”
  Chávez, P.; Bulut, I.; Fall, S.; Ibraikulov, O.; Chochos, C. L.; Lévêque, P.; Leclerc, N. Molecules 2018, 23, 1270. (Impact Factor 2020: 4.411).
• “Synthesis of D-π-A-π type Benzodithiophene-Quinoxaline Copolymers by Direct Arylation and their Application in Organic Solar Cells”
  Zimmermann, D.; Sprau, C.; Schröder, J.; Gregoriou, V. G.; Avgeropoulos, A.; Chochos, C. L.; Colsmann, A.; Janietz, S.; Krüger, H.J. Polym. Sci. Part A: Polym. Chem. 2018, 56, 1457 - 1467. (Impact Factor 2020: 2.93).
• “High Performance Organic Photodetectors From a High Bandgap Indacenodithiophene-based π-conjugated D-A Polymer”
  Benavides, C. M.; Murto, P.; Chochos, C. L.; Gregoriou, V. G.; Avgeropoulos, A.; Xu, X.; Bini, K.; Andersson, M. R.; Schmidt, O.; Brabec, C. J.; Wang, E.; Tedde, S. F.ACS Appl. Mater. Interfaces 2018, 10, 12937 - 12946. (Impact Factor 2020: 9.229).
• “Enhancement the Power Conversion Efficiency of Organic Solar Cells via Unveiling the Appropriate Rational Design Strategy in Indacenodithiophene-alt-Quinoxaline π-Conjugated Polymers”
  Chochos, C. L.* (co-corresponding author); Singh, R.; Gregoriou, V. G.; Kim, M.; Katsouras, A.; Serpetzoglou, E.; Konidakis, I.; Stratakis, E.; Cho, K.; Avgeropoulos, A. ACS Appl. Mater. Interfaces2018, 10, 10236 - 10245. (Impact Factor 2020: 9.229).
• “α,β-Unsubstituted meso-Positioning Thienyl BODIPY: A Promising Electron Deficient Building Block for the Development of Near Infrared (NIR) p-type Quaterthiophene Donor-Acceptor (D-A) Conjugated Polymers”
  Squeo, B. M.; Gregoriou, V. G.; Han, Y.; Palma-Cando, A.; Serpetzoglou, E.; Allard, S.; Avgeropoulos, A.; Stratakis, E.; Anthopoulos, T. D.; Heeney, M.; Scherf, U.; Chochos, C. L.* (corresponding author) J. Mater. Chem. C 2018, 6, 4030 - 4040. (Impact Factor 2020: 7.393).
• “4H-1,2,6-Thiadiazine-containing donor-acceptor conjugated polymers: synthesis, optoelectronic characterization and use in organic solar cells”
  Chochos, C. L.* (co-corresponding author); Kalogirou, A. S.; Ye, T.; Tatsi, E.; Katsouras, A.; Zisimou, G. A.; Gregoriou, V. G.; Avgeropoulos, A.; Koutentis, P. A. J. Mater. Chem. C 2018, 6, 3658 - 3667. (Impact Factor 2020: 7.393).
• “New N-Type Solution Processable All Conjugated Polymer Network. Synthesis, Optoelectronic Characterization and Application in Organic Solar Cells”
  Bildirir, H.; Di Carlo Rasi, D.; Wienk, M. M.; Janssen, R. A. J.; Avgeropoulos, A.; Gregoriou, V. G.; Allard, S.; Scherf, U.; Chochos, C. L.* (co-corresponding author) Macromol. Rapid Commun. 2018, 39, 1700629. (Impact Factor 2020: 5.734).
• “Effects of alkyl side chains positioning and presence of fused aromatic units in the backbone of low-bandgap diketopyrrolopyrrole copolymers on the optoelectronic properties of organic solar cells ”
  Chochos, C. L.* (co-corresponding author); Katsouras, A.; Drakopoulou, S.; Miskaki, C; Krassas, M.; Tzourmpakis, P.; Kakavelakis, G.; Sprau, C.; Colsmann, A.; Squeo, B. M.; Gregoriou, V. G.; Kymakis, E.; Avgeropoulos, A. J. Polym. Sci. Part A: Polym. Chem. 2018, 56, 138 - 146. (Impact Factor 2020: 2.93).

• “The Role of Chemical Structure in Indacenodithienothiophene-alt-Benzothiadiazole Copolymers for High Performance Organic Solar Cells With Improved Photo-Stability Through Minimization of Burn-in Loss”
  Chochos, C. L.* (co-corresponding author); Leclerc, N.; Gasparini, N.; Zimmerman, N.; Tatsi, E.; Katsouras, A.; Moschovas, D.; Serpetzoglou, E.; Konidakis, I.; Fall, S.; Lévêque, P.; Heiser, T.; Spanos, M.; Gregoriou, V. G.; Stratakis, E.; Ameri, T.; Brabec, C. J.; Avgeropoulos, A. J. Mater. Chem. A 2017, 5, 25064 - 25076. (Impact Factor 2020: 12.732).
• “Impact of the catalytic system to the formation of structural defects for the synthesis of well-defined donor-acceptor semiconducting polymers”
  Spanos, M.; Gregoriou, V. G.; Avgeropoulos, A.; Chochos, C. L.* (corresponding author) Macromol. Chem. Phys. 2017, 218, 1700283. (Impact Factor 2020: 2.527).
• “Highly Efficient Solid-State Near-infrared Organic Light-Emitting Diodes incorporating A-D-A Dyes based on α,β-unsubstituted "BODIPY" Moieties”
  Zampetti, A.; Minotto, A.: Squeo, B. M.; Gregoriou, V. G.; Allard, S.; Scherf, U.; Chochos, C. L.* (co-corresponding author); Franco Cacialli* Sci. Rep. 2017, 7, 1611. (Impact Factor 2020: 4.379).
• “Optimization of the power conversion efficiency in high bandgap naphthodithiophene-based conjugated polymers for organic photovoltaics by the random terpolymer approach”
  Gedefaw, D.; Sharma, A.; Pan, X.; Bjuggren, J.; Kroon, R.; Gregoriou, V. G.; Chochos, C. L.; Andersson, M. R.Eur. Polym. J. 2017, 91, 92 - 99. (Impact Factor 2020: 4.598).
• “BODIPY-based Polymeric Dyes as Emerging Horizon Materials for Biological Sensing and Organic Electronic Applications”
  Squeo, B. M.; Gregoriou, V. G.; Avgeropoulos, A.; Baysec, S.; Allard, S.; Scherf, U.; Chochos, C. L.* (corresponding author) Prog. Polym. Sci. 2017, 71, 26 - 52. (Impact Factor 2020: 29.190).
• “Porous Organic Polymers as Emerging New Materials for Organic Photovoltaic Applications: Current Status and Future Challenges”
  Bildirir, H.; Gregoriou, V. G.; Avgeropoulos, A.; Scherf, U.; Chochos, C. L.* (co-corresponding author) Mater. Horiz. 2017, 4, 546. (Impact Factor 2020: 13.266).
• “Beyond Donor-Acceptor (D-A) Approach: Structure-Optoelectronic Properties-Organic Photovoltaic Performance Correlation in New D-A1-D-A2 Low Band Gap Conjugated Polymers”
  Chochos, C. L.* (co-corresponding author); Drakopoulou, S.; Katsouras, A.; Squeo, B. M.; Sprau, C.; Colsmann, A.; Gregoriou, V. G.; Cando, A.-P.; Allard, S.; Scherf, U.; Gasparini, N.; Ameri, T.; Brabec, C. J.; Avgeropoulos, A. Macromol. Rapid Commun. 2017, 38, 1600720. (Impact Factor 2020: 5.734).
• “Indacenodithienothiophene-Based Ternary Organic Solar Cells: Concept, Devices and optoelectronic analysis”
  Gasparini, N.; Rodriguez, E. A. G.; Katsouras, A.; Avgeropoulos, A.; Pagona, G.; Gregoriou, V. G.; Chochos, C. L.; Allard, S.; Scherf, U.; Brabec, C. J.; Ameri, T. Front. Energy Res. 2017, 4, 40. (Impact Factor 2020: 4.008).
• “Rational Design of High Performance Wide Bandgap Gap (~2 eV) Polymer Semiconductors as Electron Donors in Organic Photovoltaics Exhibiting High Open Circuit Voltage (1 V)”
  Chochos, C. L.* (corresponding author); Katsouras, A.; Gasparini, N.; Koulogiannis, C.; Ameri, T.; Brabec, C. J.; Avgeropoulos A. Macromol. Rapid Commun. 2017, 38, 1600614. (Impact Factor 2020: 5.734).
• “Enhancement of the power conversion efficiency in organic photovoltaics by unveiling the appropriate polymer backbone enlargement approach”
  Chochos, C. L.* (co-corresponding author); Singh, R.; Kim, K.; Gasparini, N.; Katsouras, A.; Kulshreshtha, C.; Gregoriou, V. G.; Keivanidis, P. E.; Ameri, T.; Brabec, C. J.; Cho, K.; Avgeropoulos, A.Adv. Funct. Mater. 2016, 26, 1840. (Impact Factor 2020: 18.81).
• “An Alternative Strategy to Adjust the Recombination Mechanism of Organic Photovoltaics by Implementing Ternary Compounds”
  Gasparini, N.; Salvador, M.; Fladischer, S.; Katsouras, A.; Avgeropoulos, A.; Spiecker, E.; Chochos, C. L.; Brabec, C. J.; Ameri, T. Adv. Energy Mater. 2015, 5, 1501527. (Impact Factor 2020: 29.37). A Frontispiece Cover in Advanced Energy Materials has been published (http://onlinelibrary.wiley.com/doi/10.1002/aenm.201570132/full) for this work.
• “Systematic Analysis of Polymer Molecular Weight Influence on the Organic Photovoltaic Performance”
  Katsouras, A.; Gasparini, N.; Koulogiannis, C.; Spanos, M.; Ameri, T.; Brabec, C. J.; Chochos, C. L.* (corresponding author); Avgeropoulos A. Macromol. Rapid Commun. 2015, 36, 1778-1797. (Impact Factor 2020: 5.734). This work has been highlighted in MaterialsViews (7 October 2015) with the title “How to find the “optimal” molecular weight for photovoltaic polymers”. (http://www.materialsviews.com/find-optimal-molecular-weight-photovoltaic-polymers/)
• “Ultra Low Band Gap α,β-unsubstituted BODIPY-based Copolymer Synthesized by Palladium Catalyzed Cross-Coupling Polymerization for Near Infrared Organic photovoltaics”
  Squeo, B. M.; Gasparini, N.; Ameri, T.; Palma-Caldo, A.; Allard, S.; Gregoriou, V. G.; Brabec, C. J.; Scherf, U.; Chochos, C. L.* (corresponding author) J. Mater. Chem. A 2015, 3, 16279-16286. (Impact Factor 2020: 12.732).
• “Photophysics of molecular weight induced losses in indacenodithienothiophene-based solar cells”
  Gasparini, N.; Katsouras, A.; Prodromidis, M. I.; Avgeropoulos, A.; Baran, D.; Salvador, M.; Fladischer, S.; Spiecker, E.; Chochos, C. L.; Ameri, T.; Brabec, C. J. Adv. Funct. Mater. 2015, 25, 4898-4907. (Impact Factor 2020: 18.81).
• “Using pyridal[2,1,3]thiadiazole as an acceptor unit in a low band-gap copolymer for photovoltaic applications”
  Ibraikulov, O. A.; Bechara, R.; Chavez, P.; Bulut, I.; Tastanbekov, D.; Leclerc, N.; Hebraud, A.; Heinrich, B.; Berson, S.; Lemaitre, N.; Chochos, C. L.; Lévêque, P.; Heiser, T. Org. Electron. 2015, 23, 171 - 178. (Impact Factor 2020: 3.721).
• “Impact of thienothiophene isomeric structures on the optoelectronic properties and photovoltaic performance in quinoxaline based donor-acceptor copolymers”
  Singh, R.; Pagona, G.; Gregoriou, V. G.; Tagmatarchis, N.; Toliopoulos, D.; Han, Y.; Fei, Z.; Katsouras, A.; Avgeropoulos, A.; Anthopoulos, T. D.; Heeney, M.; Keivanidis, P. E.; Chochos, C. L.* (corresponding author) Polym. Chem. 2015, 6, 3098-3109. (Impact Factor 2020: 5.582).
• “The role of the ethynylene bond on the optical and electronic properties of diketopyrrolopyrrole copolymers”
  Pattanasattayavong, P.; Sygletou, M.; Kymakis, E.; Stratakis, E.; Yan, F.; Gregoriou, V. G.; Anthopoulos, T. D.; Chochos, C. L.* (corresponding author) RSC Adv. 2014, 4, 58404-58411. (Impact Factor 2020: 3.361).
• “Influence of the Electron Deficient Co-monomer on the Optoelectronic Properties and Photovoltaic Performance of Dithienogermole-based Co-polymers”
  Yau, C. P.; Fei, Z; Ashraf, R. S.; Shahid, M.; Watkins, S. E.; Pattanasattayavong, P.; Anthopoulos, T. D.; Gregoriou, V. G.; Chochos, C. L.* (co-corresponding author); Heeney, M. Adv. Funct. Mater. 2014, 24, 678-687. (Impact Factor 2020: 18.81).
• “Novel BODIPY-based Conjugated Polymers Donors for Organic Photovoltaic Applications”
  Economopoulos, S. P.; Chochos, C. L.; Ioannidou, H. A.; Neophytou, M.; Charilaou, C.; Zissimou, G. A.; Frost, J. M.; Sachetan, T.; Shahid, M.; Nelson, J.; Heeney, M.; Bradley, D. D. C.; Itskos, G.; Koutentis, P. A.; Choulis, S. A. RSC Adv. 2013, 3, 10221-10229. (Impact Factor 2020: 3.361).
• “Rational Design on N-Type Organic Materials for High Performance Organic Photovoltaics”
  Chochos, C. L.* (Corresponding author); Tagmatarchis, N.; Gregoriou, V. G. RSC Adv. 2013, 3, 7160-7181. (Impact Factor 2020: 3.361).
• “Theoretical Study of Phenyl-substituted Indacenodithiophene Copolymers for High Performance Organic Photovoltaics”
  Chochos, C. L.* (Corresponding author); Avgeropoulos, A.; Lidorikis, E. J. Chem. Phys. 2013, 138, 064901(1)-064901(6). (Impact Factor 2020: 3.488).
• “2-(2,3,4,5,6-Pentafluorophenyl)-1H-benzo[d]imidazole, a fluorine-rich building block for the preparation of conjugated polymer donors for organic solar cell applications”
  Neophytou, M.; Ioannidou, H. A.; Ioannou, T. A.; Chochos, C. L.; Economopoulos, S. P.; Koutentis, P. A.; Itskos, G.; Choulis, S. A. Polym. Chem. 2012, 3, 2236-2243. (Impact Factor 2020: 5.582).
• “3,6-dialkylthieno[3,2-b]thiophene moiety as a soluble and electron donating unit preserving the coplanarity of photovoltaic low band-gap copolymers”
  Biniek, L.; Chochos, C. L.; Leclerc, N.; Boyron, O.; Fall, S.; Lévêque, P.; Heiser, T. J. Polym. Sci. Part A: Polym. Chem. 2012, 50, 1861-1868. (Impact Factor 2020: 2.93).
• “Optimization of the side-chain density to improve the charge transport and photovoltaic performances of a low band gap copolymer”
  Biniek, L.; Fall, S.; Chochos, C. L.; Leclerc, N.; Lévêque, P.; Heiser, T. Org. Electron. 2012, 13, 114-120. (Impact Factor 2020: 3.721).
• “High Performance Polymer Electrolytes Based on Main and Side Chain Pyridine Aromatic Polyethers For High and Medium Temperature PEM Fuel Cells”
  Geormezi, M.; Chochos, C. L.; Gourdoupi, N.; Neophytides, S.; Kallitsis, J. K. J. Power Sources 2011, 196, 9382-9390. (Impact Factor 2020: 9.127).
• “How the Structural Deviations on the Backbone of Conjugated Polymers Influence Their Optoelectronic Properties and Photovoltaic Performance”
  Chochos, C. L.* (Corresponding author); Choulis S. A. Prog. Polym. Sci. 2011, 36, 1326-1414. (Impact Factor 2020: 29.190).
• “Impact of the Alkyl Side Chains on the Optoelectronic Properties of a Series of Photovoltaic Low-Band-Gap Copolymers”
  Biniek, L.; Fall, S.; Chochos, C. L.; Anokhin, D. V.; Ivanov, D. A.; Leclerc, N.; Lévêque, P.; Heiser, T. Macromolecules 2010, 43, 9779-9786. (Impact Factor 2020: 5.985). Listed as one of the 20 most downloaded articles for Macromolecules in Nov. 2010 - Jan. 2011.
• “Electronic Properties and Photovoltaic Performances of a Series of Oligothiophene Copolymers Incorporating Both Thieno[3,2-b]thiophene and 2,1,3-Benzothiadiazole Moieties”
  Biniek, L.; Chochos, C. L.; Hadziioannou, G.; Leclerc, N.; Lévêque, P.; Heiser, T. Macromol. Rapid Commun. 2010, 31, 651-656. (Impact Factor 2020: 5.734).
• “A [3,2-b]Thienothiophene-alt-Benzothiadiazole Copolymer for Photovoltaic Applications: Design, Synthesis, Material Characterization and Device Performances”
  Biniek, L.; Chochos, C. L.* (co-corresponding author); Leclerc, N.; Bechara, R.; Lévêque, P.; Kallitsis, J.; Heiser, T.; Hadziioannou, G. J. Mater. Chem. 2009, 19, 4946-4951. (Impact Factor 2012: 6.101).
• “Impact of Molecular Structure of Polymer in 193nm Resists Performance”
  Ismailova, E.; Tiron, R.; Chochos, C. L.; Brochon, C.; Bandelier, P.; Perret, D.; Sourd, C.; Brault, C.; Serra, C. A.; Schlatter, G.; Hadziioannou, G. Microelectron. Eng. 2009, 86, 796-799. (Impact Factor 2020: 2.523).
• “Hyperbranched Polymers For Photolithographic Applications – Towards Understanding the Relationship Between Chemical Structure of Polymer Resin and Lithographic Performances”
  Chochos, C. L.; Ismailova, E.; Brochon, C.; Leclerc, N.; Tiron, R.; Sourd, C.; Bandelier, P.; Foucher, J.; Ridaoui, H.; Dirani, A.; Soppera, O.; Perret, D.; Brault, C.; Serra, C. A.; Hadziioannou, G. Adv. Mater. 2009, 21, 1121-1125. (Impact Factor 2020: 30.85).
• “End–Functionalization of Semiconducting Species With Dendronized Terpyridine-Ru(II)-Terpyridine Complexes”
  Pefkianakis, E. K.; Tzanetos, N. P.; Chochos, C. L.; Andreopoulou, A. K.; Kallitsis, J. K. J. Polym. Sci. Part A: Polym. Chem. 2009, 47, 1939-1952. (Impact Factor 2020: 2.93).
• “The Role of Intrachain and Interchain Interactions of Regioregular Poly(3-octylthiophene) Chains on the Optical Properties of a New Amphiphilic Conjugated Random Copolymer in Solution”
  Stefopoulos, A. A; Chochos, C. L.* (Corresponding author); Bokias, G.; Kallitsis, J. K. Langmuir 2008, 24, 11103-11110. (Impact Factor 2020: 3.882).
• “Novel Hybrid Materials Consisting of Regioregular Poly(3-octylthiophene)s Covalently Attached on Single Wall Carbon Nanotubes”
  Stefopoulos, A. A.; Chochos, C. L.; Prato, M.; Pistolis, G.; Papagelis, K.; Petraki, F.; Kennou, S.; Kallitsis, J. K. Chem. Eur. J. 2008, 14, 8715-8724. (Impact Factor 2020: 5.236).
• “Immobilization of Oligoquinoline Chains on Single-Wall Carbon Nanotubes and their Optical Behaviour”
  Chochos, C. L.; Stefopoulos, A. A.; Campidelli, S.; Prato, M.; Gregoriou V. G.; Kallitsis, J. K. Macromolecules 2008, 41, 1825-1830. (Impact Factor 2020: 5.985).
• “New Rod – Coil Block Copolymers Consisting of Terfluorene Segments and Electron Transporting Units as the Flexible Blocks”
  Chochos, C. L.; Tzanetos, N. P.; Economopoulos, S. P.; Gregoriou, V. G.; Kallitsis, J. K. Eur. Polym. J. 2007, 43, 5065-5075. (Impact Factor 2020: 4.598).
• “Synthesis of a Soluble N-type Cyano Substituted Polythiophene Derivative – Potential Electron Acceptor in Polymeric Solar Cells”
  Chochos, C. L.; Economopoulos, S. P.; Deimede, V.; Gregoriou, V. G.; Lloyd, M. T.; Malliaras, G. G.; Kallitsis, J. K. J. Phys. Chem. C 2007, 111, 10732-10740. (Impact Factor 2020: 4.126).
• “Synthesis and Characterization of Random Copolymers Combining Terfluorene Segments and Hole or Electron Transporting Moieties” 
  Chochos, C. L.; Tzanetos, N. P.; Economopoulos, S. P.; Gregoriou, V. G.; Kallitsis, J. K. J. Macrom. Sci. Pure and Appl. Chem. A 2007, 44, 923-930. (Impact Factor 2020: 2.168).
• “Novel brush-type copolymers bearing thiophene backbone and side chain quinoline blocks. Synthesis and their use as a compatibilizer in thiophene-quinoline polymer blends”
  Economopoulos, S. P.; Chochos, C. L.; Gregoriou, V. G.; Kallitsis, J. K.; Barrau, S.; Hadziioannou, G. Macromolecules 2007, 40, 921-927. (Impact Factor 2020: 5.985).
• “Thermally Stable Blue Emitting Terfluorene Block Copolymers”
  Chochos, C. L.; Kallitsis, J. K.; Keivanidis, P. E.; Baluschev, S.; Gregoriou, V. G. J. Phys. Chem. B 2006, 110, 4657-4662. (Impact Factor 2020: 2.991).
• “Synthesis and Optical Properties on a Series of Polyethers Incorporating Terfluorene Segments and Methylene Spacers”
  Chochos, C. L.; Papakonstandopoulou, D.; Economopoulos, S. P.; Gregoriou, V. G.; Kallitsis, J. K. J. Macrom. Sci. Pure and Appl. Chem. A 2006, 43, 419-431. (Impact Factor 2020: 2.168).
• “Synthesis, optical and morphological characterization of soluble main chain 1,3,4-oxadiazole copolyarylethers – potential candidates for solar cells applications as electron acceptors”
  Chochos, C. L.; Govaris, G. K.; Kakali, F.; Yiannoulis, P.; Kallitsis, J. K.; Gregoriou, V. G. Polymer 2005, 46, 4654-4663. (Impact Factor 2020: 4.430).
• “Rod–Coil Block Copolymers Incorporating Terfluorene Segments for Stable Blue Light Emission”
  Chochos, C. L.; Kallitsis, J. K.; Gregoriou, V. G. J. Phys. Chem. B 2005, 109, 8755-8760. (Impact Factor 2020: 2.991).
• “Synthesis and Characterization of Conjugated Polymers and Their Blends for Optoelectronic Applications”
  Economopoulos, S. P.; Govaris, G. K.; Chochos, C. L.; Andreopoulou, A. K. ; Tzanetos, N. P.; Kallitsis, J. K.; Yianoulis, P.; Gregoriou, V. G. Macromol. Symp. 2004, 205, 19-32. (Impact Factor 2020: 0.85).
• “Influence of the Coil Block on the Properties of Rod-Coil Diblock Copolymers with Oligofluorene as the Rigid Segment”
  Chochos, C. L.; Tsolakis, P. K.; Gregoriou, V. G.; Kallitsis, J. K. Macromolecules 2004, 37, 2502-2510. (Impact Factor 2020: 5.985).
• “Correlation of the Molecular Orientation and Photonic Properties of Rigid-Flexible Aromatic Polyethers Using FT-IR Linear Dichroism and Photoluminescence Spectroscopic Techniques”
  Chochos, C. L.; Kandilioti, G.; Deimede, V. A.; Gregoriou, V. G. J. Macrom. Sci. Pure and Appl. Chem. A 2002, 39, 1317-1333. (Impact Factor 2020: 2.168).
• “Simple syntheses of cyclic polyamines using selectively N-tritylated polyamines and succinic anhydride”
  Militsopoulou, M.; Tsiakopoulos, N.; Chochos, C.; Magoulas, G.; Papaioannou, D. Tetrahedron Lett. 2002, 43, 2593-2596. (Impact Factor 2020: 2.415).