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Synthesis and Characterization of Hybrid Materials Derived from Conjugated Copolymers and Reduced Graphene Oxideстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Lazanas Alexandros Ch, Katsouras Athanasios, Spanos Michael, Manesi Gkreti-Maria, Moutsios Ioannis, Vashurkin Dmitry V., Moschovas Dimitrios, Gregoriou Vasilis G., Ivanov Dimitri A., Chochos Christos L., Avgeropoulos Apostolos
- Журнал: Polymers
- Год издания: 2022
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- DOI: 10.3390/polym14235292
- Аннотация: In this study the preparation of hybrid materials based on reduced graphene oxide (rGO) and conjugated copolymers is reported. By tuning the number and arrangement of thiophenes in the main chain (indacenothiophene or indacenothienothiophene) and the nature of the polymer ac-ceptor (difluorobenzothiazole or diketopyrrolopyrrole) semiconducting copolymers were syn-thesized through Stille aromatic coupling and characterized to determine their molecular char-acteristics. The graphene oxide was synthesized using the Staudenmaier method and was further modified to reduced graphene oxide prior to their structural characterization. Various mixtures with different rGO to conjugated copolymers ratios were prepared to determine the optoelec-tronic and morphological properties. An increase in the maximum absorbance ranging from 3 to 6 nm for all hybrid materials irrespective of the rGO concentration when compared to the pristine conjugated copolymers was estimated through the UV-Vis spectroscopy indicating a differentia-tion on the optical properties. Through voltammetric experiments the oxidation and reduction potentials were determined and the calculated HOMO and LUMO levels revealed a decrease on the electrochemical Energy gap for low rGO concentrations. The study indicates the potential of the hybrid materials consisting of graphene oxide and high band gap conjugated copolymers for applications related to organic solar cells.
- Добавил в систему: Иванов Дмитрий Анатольевич