Synthesis and characterization of block copolythiophene with hexyl and triethylene glycol side chains

被引：34
作者：
Higashihara, Tomoya [1 ,4 ]
Ohshimizu, Kaoru [1 ]
Ryo, Yecheol [2 ,3 ]
Sakurai, Takuya [1 ]
Takahashi, Ayumi [1 ]
Nojima, Shuichi [1 ]
Ree, Moonhor [2 ,3 ]
Ued, Mitsuru [1 ]
机构：
[1] Tokyo Inst Technol, Grad Sch Sci & Engn, Dept Organ & Polymer Mat, Meguro Ku, Tokyo 1528552, Japan
[2] Pohang Univ Sci & Technol POSTECH, BK Sch Mol Sci, Ctr Electrophoto Behav Adv Mol Syst, Div Adv Mat Sci,Dept Chem, Pohang 790784, South Korea
[3] Pohang Univ Sci & Technol POSTECH, Polymer Res Inst, Pohang 790784, South Korea
[4] Japan Sci & Technol Agcy JST, PRESTO, Kawaguchi, Saitama 3320012, Japan
来源：
POLYMER | 2011年 / 52卷 / 17期
基金：
新加坡国家研究基金会; 日本学术振兴会; 日本科学技术振兴机构;
关键词：
Block copolymer; Polythiophene; Phase separation; X-RAY-SCATTERING; ORGANOSILICATE DIELECTRIC FILMS; WELL-DEFINED POLYTHIOPHENE; COPOLYMER THIN-FILMS; MICROPHASE SEPARATION; DIBLOCK COPOLYMERS; POLY(3-HEXYLTHIOPHENE); POLYMERIZATION; TRANSITIONS; MORPHOLOGY;
D O I：
10.1016/j.polymer.2011.06.037
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 well-defined diblock copolythiophene, poly(3-hexylthiophene)-b-poly(3-(2-(2-(2-methoxyethoxy) ethoxy)ethoxy)methylthiophene) (P3HT-b-P3TEGT) was successfully synthesized by a Grignard metathesis (GRIM) polymerization. The structure of the block copolymer was confirmed by size exclusion chromatography (SEC), H-1 NMR spectroscopy, differential scanning calorimetry (DSC), ultraviolet-visible (UV-vis) spectroscopy and fluorescence spectroscopy. The self-assembled structure of the block copolythiophene was investigated by atomic force microscopy (AFM), transmission electron microscopy (TEM), small-angle X-ray scattering (SAXS), and synchrotron grazing incidence X-ray scattering (GIXS). These analyses found that the block components in films form vertically oriented lamellar structure via phase separation. Furthermore, both the phases were found to consist of molecular multi-layers respectively, in which the layers stack in the out-of-plane of the film. The P3HT phase exhibited crystalline, which is originated from the pi-pi stacked thiophene backbones. In contrast, the poly(3-(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)methylthiophene) (P3TEGT) phase revealed amorphous. Overall, the amphiphilic nature of P3HT-b-P3TEGT successfully demonstrated to lead to well-defined self-assembly structure in films. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3687 / 3695
页数：9
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