Poly(3-hexylthiophene)-block-poly(pyridinium phenylene)s: Block Polymers of p- and n-Type Semiconductors

被引：66

作者：

Izuhara, Daisuke ^{[1
]}

Swager, Timothy M. ^{[1
]}

机构：

[1] MIT, Dept Chem, Cambridge, MA 02139 USA

来源：

MACROMOLECULES | 2011年 / 44卷 / 08期

基金：

美国国家科学基金会;

关键词：

FIELD-EFFECT TRANSISTORS; COPOLYMERS; DONOR; TRANSPORT; MOBILITY; CHANNEL; CELLS;

D O I：

10.1021/ma102566u

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Conjugated crystalline-crystalline donor- acceptor-donor block copolymer semiconductors, with regio-regular poly(3-hexylthiophene) as a donor (p-type) block and poly(pyridinium pheneylene) as an acceptor (n-type) block within the backbone, were produced by sequential Grignard metathesis synthesis of poly(3-hexylthiophene), a Yamamoto-type cross-coupling polymerization-cyclization sequence. These conjugated block copolymers are soluble in organic solvents and display broad optical absorption bands extending close to the near-infrared region. They show reversible ambipolar redox properties with high electron affinities of 3.8-4.0 eV as well as useful ionization potentials of 5.1 eV that are characteristic of the respective blocks. Block copolymers from p- and n-type organic semiconductors are of interest for the formation of nanostructured bulk heterojunctions in photovoltaic devices.

引用

页码：2678 / 2684

页数：7

共 37 条

[21] Field effect transport and trapping in regioregular polythiophene nanofibers [J].