Direct observation of alkyl chain interdigitation in conjugated polyquarterthiophene self-organized on graphite surfaces

被引：53

作者：

Keg, Peisi ^{[1
]}

Lohani, Anup ^{[1
]}

Fichou, Denis ^{[2
]}

Lam, Yeng Ming ^{[1
]}

Wu, Yiliang ^{[3
]}

Ong, Beng S. ^{[3
]}

Mhaisalkar, Subodh G. ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[2] UPMC, CNRS, CEA,SPCSI DRECAM, CEA Saclay,LRC Nanostruct & Semicond Organ, F-91191 Gif Sur Yvette, France

[3] Xerox Res Ctr Canada Ltd, Mat Design & Integrat Lab, Mississauga, ON L5K 2L1, Canada

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2008年 / 29卷 / 14期

关键词：

D O I：

10.1002/marc.200800012

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 solution processible polymer -poly(3,3‴-didodecylquaterthiophene) (PQT-12) is investigated at the liquid/solid interface using the scanning tunneling microscopy (STM). Two-dimensional ordered films made up of self-assembled domains, with dimensions of 100 nm × 50 nm adsorbed on highly oriented pyrolytic graphite (HOPG) were formed. These domains consist of parallel lamellar polymer chains, with the alkyl chains forming interdigitated structures, along with U-shaped and closed ring segments of the polymer chains. A polymer chain packing model is proposed herein, which attempts to propose a correlation between the packing of long chains and charge mobilities. These STM results could help in understanding the relationship between the extended conjugation and molecular organization of the PQT-12 chains. © 2008 WILEY-VCH Verlag GmbH & Co. KCaA.

引用

页码：1197 / 1202

页数：6

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