聚噻吩分子排列向阶梯状相邻Si(111)衬底的纳米转移。

Nanotransfer of the polythiophene molecular alignment onto the step-bunched vicinal Si(111) substrate.

作者信息

Onoki Ryo, Yoshikawa Genki, Tsuruma Yuki, Ikeda Susumu, Saiki Koichiro, Ueno Keiji

机构信息

Department of Chemistry, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan.

出版信息

Langmuir. 2008 Oct 21;24(20):11605-10. doi: 10.1021/la8016722. Epub 2008 Sep 9.

DOI:10.1021/la8016722

PMID:18778089

Abstract

A poly(3-dodecylthiophene-2,5-diyl) film having in-plane anisotropic molecular arrangement was successfully fabricated by transferring its Langmuir-Blodgett film onto a step-bunched Si(111) substrate. Polarized near-edge X-ray absorption fine structure measurements revealed that the polythiophene main chains are preferentially orientated along periodic facet/terrace nanostructures on the step-bunched substrate, whereas less anisotropy was found on a flat substrate. The step-bunched Si substrate has been proved to be effective for controlling the in-plane molecular arrangement in the polymer thin film.

摘要

通过将其朗缪尔-布洛杰特膜转移到台阶束状Si(111)衬底上，成功制备了具有面内各向异性分子排列的聚(3-十二烷基噻吩-2,5-二亚基)薄膜。偏振近边X射线吸收精细结构测量表明，聚噻吩主链优先沿台阶束状衬底上的周期性小面/平台纳米结构取向，而在平坦衬底上发现的各向异性较小。已证明台阶束状Si衬底对于控制聚合物薄膜中的面内分子排列是有效的。