Alternating π-conjugated block copolymers with precise block length

被引：7

作者：

Schappel, J ^{[1
]}

Schmidt, K ^{[1
]}

Klemm, E ^{[1
]}

机构：

[1] Univ Jena, Inst Organ Chem & Makromol Chem, D-07743 Jena, Germany

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2005年 / 43卷 / 16期

关键词：

block copolymers; conjugated copolymers; macromonomers; oligophenyleneethynylene; solar cells; Sonogashira polycondensation;

D O I：

10.1002/pola.20826

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A Sonogashira polycondensation reaction has been used to synthesize copolymers consisting of alternating oligo(p-phenyleneethynylene) with a precise block length as an electron-rich component and 1,4-bis(2-phenylene-2-cyanovinylene)benzene or 2,6-bis(2-pyridinylene-ethynylene)pyridine as an electron-poor component. The copolymers differ in the length of the phenyleneethynylene block (trimer or pentamer) and the content of the electron-poor component. The length of the phenyleneethynylene block has no influence on the maximum wavelength. The electron-poor cyano-block component lowers the optical band-gap energy of the copolymers. The value is equivalent to that of poly(cyano-phenylenevinylene) (CN-PPV) (2.3-2.4 eV). (c) 2005 Wiley Periodicals, Inc.

引用

页码：3574 / 3587

页数：14

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