Preparation of nanoporous polyimide thin films via layer-by-layer self-assembly of cowpea mosaic virus and poly(amic acid)

doi:10.1016/j.tsf.2011.05.047

CORC > 化学研究所 > 中国科学院化学研究所

	Preparation of nanoporous polyimide thin films via layer-by-layer self-assembly of cowpea mosaic virus and poly(amic acid)
	Peng, Bo 1; Wu, Guojun 1; Lin, Yuan 1; Wang, Qian 2; Su, Zhaohui 1
刊名	THIN SOLID FILMS
	2011-09-01
卷号	519 期号:22 页码:7712-7716
关键词	Multilayers Self-assembly Dielectric Constants Cowpea Mosaic Virus Polyimides
ISSN号	0040-6090
DOI	10.1016/j.tsf.2011.05.047
英文摘要	Low dielectric (low-kappa) materials are of key importance for the performance of microchips. In this study, we show that nanosized cowpea mosaic virus (CPMV) particles can be assembled with poly(amic acid) (PM) in aqueous solutions via the layer-by-layer technique. Then, upon thermal treatment CPMV particles are removed and PM is converted into polyimide in one step, resulting in a porous low-kappa polyimide film. The multilayer self-assembly process was monitored by quartz crystal microbalance and UV-Vis spectroscopy. Imidization and the removal of the CPMV template was confirmed by Fourier transform infrared spectroscopy and atomic force microscopy respectively. The dielectric constant of the nanoporous polyimide film thus prepared was 2.32 compared to 3.40 for the corresponding neat polyimide. This work affords a facile approach to fabrication of low-kappa polyimide ultrathin films with tunable thickness and dielectric constant. (C) 2011 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000295057000016
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/72489]
专题	中国科学院化学研究所
通讯作者	Su, Zhaohui
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China 2.Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA
推荐引用方式 GB/T 7714	Peng, Bo,Wu, Guojun,Lin, Yuan,et al. Preparation of nanoporous polyimide thin films via layer-by-layer self-assembly of cowpea mosaic virus and poly(amic acid)[J]. THIN SOLID FILMS,2011,519(22):7712-7716.
APA	Peng, Bo,Wu, Guojun,Lin, Yuan,Wang, Qian,&Su, Zhaohui.(2011).Preparation of nanoporous polyimide thin films via layer-by-layer self-assembly of cowpea mosaic virus and poly(amic acid).THIN SOLID FILMS,519(22),7712-7716.
MLA	Peng, Bo,et al."Preparation of nanoporous polyimide thin films via layer-by-layer self-assembly of cowpea mosaic virus and poly(amic acid)".THIN SOLID FILMS 519.22(2011):7712-7716.