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A polythiophene derivative with dioctyloxyltriphenylamine‐vinylene conjugated side chain: Synthesis, hole mobility, and photovoltaic property
Author(s) -
Wan Meixiu,
Sang Guangyi,
Zou Yingping,
Tan Songting,
Li Yongfang
Publication year - 2009
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.29921
Subject(s) - materials science , polythiophene , side chain , thermogravimetric analysis , triphenylamine , cyclic voltammetry , gel permeation chromatography , polymer chemistry , polymer , thermal stability , pedot:pss , dispersity , polymer solar cell , stille reaction , conjugated system , chemical engineering , conductive polymer , chemistry , organic chemistry , electrode , electrochemistry , engineering , composite material
A new polythiophene derivative with dioctyloxyl triphenylamine‐vinylene ( DOTPAV ) conjugated side‐chain, DOTPAV‐PT , was synthesized by the Stille coupling method and characterized by 1 H‐NMR, 13 C‐NMR, elemental analysis, gel permeation chromatography, thermogravimetric analysis, UV–vis absorption spectroscopy, photoluminescence spectroscopy, and cyclic voltammetry. The polymer DOTPAV‐PT is soluble in common organic solvents and possesses good thermal stability with 5% weight loss temperature of 310°C. The weight‐average molecular weight of DOTPAV‐PT is 8.0 K with a polydispersity index of 1.24. The hole mobility of the polymer determined from space‐charge‐limited current model was 1.25 × 10 −4 cm 2 V −1 s −1 . The bulk heterojunction polymer solar cell with the configuration of ITO/PEDOT : PSS/polymer : PCBM (1 : 1)/Ca/Al was fabricated, and the power conversion efficiency of the device was 0.16% under the illumination of AM1.5, 100 mW cm −2 . © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009