Oligothiophenes for pattern formation by stamping

被引：8

作者：

Allard, S ^{[1
]}

Braun, L ^{[1
]}

Brehmer, M ^{[1
]}

Zentel, R ^{[1
]}

机构：

[1] Univ Mainz, Inst Organ Chem, D-55099 Mainz, Germany

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2003年 / 204卷 / 01期

关键词：

microstructure; moulding; organic semiconductors; photopolymerization; soft lithography;

D O I：

10.1002/macp.200290056

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Oligothiophene monomers with a fixed length varying from 3 to 5 thiophene rings were prepared by Stille coupling. They were functionalised with one or two methacrylate groups to allow polymerization and cross-linking. These monomers can be patterned with the help of soft silicon stamps (e.g., with the micro-injection moulding in capillaries process) on substrates like glass or flexible polymer foils. If a photoinitiator has been added, they can then be hardened by exposure to UV-light through the transparent stamp. Afterwards the stamp can be removed. This allows the preparation of several centimeters long oligothiophene lines of a width varying between 50 and 0.5 mum. These lines of semiconducting organic material can be used e.g., as an orientation layer for liquid crystals.

引用

页码：68 / 75

页数：8

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