Microstructure and Optoelectronic Properties of P3HT-b-P4VP/PCBM Blends: Impact of PCBM on the Copolymer Self-Assembly

被引：20

作者：

Gernigon, Veronique ^{[1
]}

Leveque, Patrick ^{[1
]}

Richard, Fanny ^{[2
]}

Leclerc, Nicolas ^{[2
]}

Brochon, Cyril ^{[3
]}

Braun, Christoph H. ^{[4
]}

Ludwigs, Sabine ^{[4
]}

Anokhin, Denis V. ^{[5
]}

Ivanov, Dimitri A. ^{[5
]}

Hadziioannou, Georges ^{[3
]}

Heiser, Thomas ^{[1
]}

机构：

[1] Univ Strasbourg, Lab ICube, CNRS, UMR 7357, F-67037 Strasbourg 2, France

[2] Univ Strasbourg, ICPEES, CNRS, UMR 7515, F-67087 Strasbourg 2, France

[3] Univ Bordeaux 1, LCPO, Ecole Natl Super Chim Biol & Phys, F-33607 Pessac, France

[4] Univ Stuttgart, Inst Polymerchem, D-70569 Stuttgart, Germany

[5] CNRS, UMR 7361, Inst Sci Mat Mulhouse, F-68057 Mulhouse, France

来源：

MACROMOLECULES | 2013年 / 46卷 / 22期

关键词：

BLOCK-COPOLYMERS; POLY(3-HEXYLTHIOPHENE); MORPHOLOGY; FULLERENE; FILMS;

D O I：

10.1021/ma4010692

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Block copolymers have been widely investigated over the past decades for their ability to microphase separate into well-defined nanostructured thin films with tailored physical properties. The aim of the present study is to investigate the thin film properties of rod coil block copolymer/phenyl-C-61-butyric acid methyl ester (PCBM) blends as a function of the blend weight ratio, using a copolymer which is based on a poly(3-hexylthiophene) (P3HT) rod block and poly(4-vinylpyridine) (P4VP) coil block. Atomic force microscopy, transmission electron microscopy and grazing incidence X-ray diffraction analysis are used to study the influence of PCBM on the copolymer self-assembling. UV-visible absorption and photoluminescence spectroscopies as well as field-effect mobility measurements are performed in order to get further insight into the blend optoelectronic properties. It is found that the block copolymer phase-separated morphology and charge carrier mobilities strongly depend on the PCBM loading and thermal annealing. In particular, the results point out that PCBM enhances the block copolymer microphase separation within a narrow range of the polymer:PCBM weight ratio. In addition, clear evidence for PCBM accumulation within the P4VP domains is found by monitoring the P3HT fluorescence and charge carrier mobilities.

引用

页码：8824 / 8831

页数：8

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