Assessing the Donor-Acceptor Nature and the Electrochemical Stability of a Fluorene-Diketopyrrolopyrrole-Thiophene-Based Copolymer


Organic dyes have been studied for applications in large-area, flexible, cheap, and efficient organic electronic devices. Among them, diketopyrrolopyrrole (DPP) has gained attention thanks to its planar structure, photochemical and thermal stability, and easy processability. Also, the electron-withdrawing nature of DPP makes its application attractive in the synthesis of donor-acceptor (D-A) copolymers, with appealing features such as the tunable energy levels and photophysical and electrochemical properties. Inspired by these exciting characteristics, a copolymer was developed based on DPP, thiophene, and fluorene (PFDPP2T). Photophysical and electrochemical studies using both experimental and theoretical approaches were performed aiming to understand the properties of this material, such as, for instance, the D-A characteristic and the outstanding electrochemical stability upon oxidation that enables more than 400 cycles of p-doping. The outcomes unveil fundamental aspects of this class of copolymers, reinforcing their suitability for photo-electrochemical and optoelectronic applications.




Materials Science, Multidisciplinary; Polymer Science


Scalon, L; Neto, AL; Araujo, LO; Zaioncz, S; Floriano, JB; Macedo, AG; Araujo, CM; Marchiori, CFN; Rodrigues, PC



The authors acknowledge the INEO (Instituto Nacional de Eletro<^>nica Orga<^>nica) and LAMAQ-UTFPR for spectroscopy and SEC facilities. This work was financially supported by Fundaca~o Parque Tecnologico Itaipu (FPTI-BR, call FA 21/2018), Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq, grant nos. PQ2 308129/2018-0 and Equinor 440078/2019-9), Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES, PVEX 88881.171856/2018-01 and Finance code 001), and Serrapilheira Institute (Grant no. Serra-1709-17054). This work was also developed within the scope of the project CICECO-Aveiro Institute of Materials (nos. UIDB/50011/2020 and UIDP/50011/2020) financed by national funds through the Fundacao para a Cie<^>ncia e a Tecnologia/Ministerio da Educacao e Ciencia (FCT/MEC) and cofinanced by FEDER under the PT2020 Partnership Agreement. A.L.N. and L.O.A. acknowledge a CAPES fellowship. C.F.N.M. and C.M.A. thank the Swedish National Infrastructure for Computing (SNIC) at the PDC Center for High-Performance Computing and National Supercomputer Centreat Linkoping University (NSC), the Swedish Research Council (VR) (Grant no. 2014-05984), Swedish Energy Agency (Grant no. 45420-1), and STandUP for Energy collaboration.

Partilhe este projeto

Publicações similares

Usamos cookies para atividades de marketing e para lhe oferecer uma melhor experiência de navegação. Ao clicar em “Aceitar Cookies” você concorda com nossa política de cookies. Leia sobre como usamos cookies clicando em "Política de Privacidade e Cookies".