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Linear and star branched perylene‐containing polyimides: Synthesis, characterization, and photovoltaic properties of novel donor–acceptor dyes used in solar cell
Author(s) -
Niu Haijun,
Luo Jun,
Wu Wenjun,
Mu Jingshan,
Wang Cheng,
Bai Xuduo,
Wang Wen
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.35458
Subject(s) - triphenylamine , perylene , polymer chemistry , materials science , solar cell , acceptor , cyclic voltammetry , polymer , fourier transform infrared spectroscopy , photochemistry , chemistry , chemical engineering , electrochemistry , molecule , organic chemistry , physics , optoelectronics , electrode , composite material , engineering , condensed matter physics
A series of novel linear and star branched triphenylamine‐containing aromatic polyimides (AI, AII, AIII) were designed and synthesized by the condensation of 4‐aminotriphenylamine(I), 4,4′‐diamino triphenylamine(II), 4,4′,4″‐triamino triphenyl‐amine(III) with perylene‐3,4,9,10‐tetra‐carboxylic dianhydride to investigate the influence of topological structure on the energy levels and photophysical performance. The polyimides were characterized by elemental analysis, FTIR, and 1 H‐NMR. The onset temperatures for 5% weight loss determined by thermoanalysis were between 415 and 428°C. The results of UV–vis spectra, quantum chemical calculation, and cyclic voltammetry revealed that introduction of triphenylamine group changed the energy levels of entire dye system. The aggregation way of polymers was also studied by the methods of UV–vis spectra, X‐ray diffraction (XRD), atom force microscopy, and the molecular simulation. The dye‐sensitized solar cells prepared by using the series of dyes showed big photoelectric response. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012