Synthesis and Thin Film Phase Behaviour of Functional Rod-Coil Block Copolymers Based on Poly(para-phenylenevinylene) and Poly(lactic acid)

被引：8
|
作者：
Braun, Christoph H. [1 ,2 ,3 ]
Schoepf, Benjamin [1 ,2 ,3 ]
Ngov, Chheng [4 ]
Brochon, Cyril [4 ,5 ]
Hadziioannou, Georges [4 ,5 ]
Crossland, Edward J. W. [1 ,2 ]
Ludwigs, Sabine [1 ,2 ,3 ]
机构：
[1] Univ Freiburg, Freiburger Mat Forschungszentrum, D-79104 Freiburg, Germany
[2] Univ Freiburg, Freiburg Inst Adv Studies, D-79104 Freiburg, Germany
[3] Univ Freiburg, Inst Makromol Chem, D-79104 Freiburg, Germany
[4] Univ Strasbourg, LIPHT ECPM, F-67087 Strasbourg, France
[5] Univ Bordeaux 1, Lab Chim Polymeres Organ, ENSCBP, Inst Polytech Bordeaux,CNRS UMR 5629, F-33607 Pessac, France
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2011年 / 32卷 / 11期
关键词：
atomic force microscopy; conjugated polymers; diblock copolymers; phase separation; thin films; ACCEPTOR DIBLOCK COPOLYMERS; EXCITON DIFFUSION; RADICAL POLYMERIZATION; PHOTOVOLTAIC APPLICATIONS; NANOWIRE ARRAYS; SOLAR-CELLS; DONOR; TEMPLATES; SURFACE; POLY(3-HEXYLTHIOPHENE);
D O I：
10.1002/marc.201100012
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
We report the synthesis of a series of block copolymers consisting of a rod-like semiconducting poly(2,5-di(2'-ethylhexyloxy)-1,4-phenylenevinylene) (DEH-PPV) block and a flexible poly(lactic acid) (PLA) block that can be selectively degraded under mild conditions. Such selectively degradable block copolymers are designed as self-assembling templates for bulk heterojunction donor-acceptor layers in organic solar cells. A lamellar microphase-separated domain structure was identified for block copolymers with PLA volume fractions between 29 and 79% in bulk and thin films using SAXS, TEM, and AFM. Depending on the ratio of the two blocks we find either lamellae oriented parallel or perpendicular to the substrate in thin films.
引用
收藏
页码：813 / 819
页数：7
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