Thieno[3,4-b]thiophene-benzo[1,2-b:4,5-b']dithiophene-based polymers bearing optically pure 2-ethylhexyl pendants: Synthesis and application in polymer solar cells

被引：14

作者：

Ikai, Tomoyuki ^{[1
,2
]}

Kojima, Ryotaro ^{[1
]}

Katori, Sinji ^{[1
]}

Yamamoto, Tomoyuki ^{[1
]}

Kuwabara, Takayuki ^{[1
,2
]}

Maeda, Katsuhiro ^{[1
,2
]}

Takahashi, Kohshin ^{[1
,2
]}

Kanoh, Shigeyoshi ^{[1
,2
]}

机构：

[1] Kanazawa Univ, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa 9201192, Japan

[2] Kanazawa Univ, Coll Sci & Engn, Res Ctr Sustainable Energy & Technol, Kanazawa, Ishikawa 9201192, Japan

来源：

POLYMER | 2015年 / 56卷

基金：

日本学术振兴会;

关键词：

Chirality; pi-Conjugated copolymer; Electron donor; LOW-BANDGAP POLYMERS; CONJUGATED POLYMERS; PHOTOVOLTAIC APPLICATIONS; ORGANIC SEMICONDUCTORS; MOLECULAR DESIGN; RECENT PROGRESS; ENERGY-LEVELS; SIDE-CHAIN; PERFORMANCE; ANHYDRIDES;

D O I：

10.1016/j.polymer.2014.11.033

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Optically active narrow-bandgap polymers ((R,R)- and (S,S)-PTB5) consisting of alternating n-octyl thieno [3,4-b]thiophene-2-carboxylate and benzo[1,2-1):4,5-Le]dithiophene units bearing optically pure (R)- and (S)-2-ethylhexyl pendants, respectively, were synthesized for the first time. (R,R)- and (S,S)-PTB5 films showed apparent circular dichroism in their absorption regions of the polymer backbone due to the formation of a chirally ordered superstructure induced by the chirality of the branched alkyl pendants. Inverted-type bulk heterojunction polymer solar cells (PSCs) were fabricated using (R,R)- or (S,S)-PTB5 as electron donors and [6,6]-phenyl-C-61-butyric acid methyl ester as an electron acceptor. The photovoltaic properties of the PSCs were compared with those of the corresponding PSC containing optically inactive PTB5 bearing racemic 2-ethylhexyl pendants. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：171 / 177

页数：7

共 53 条

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