ICCAS OpenIR
Preparation of nanoporous polyimide thin films via layer-by-layer self-assembly of cowpea mosaic virus and poly(amic acid)
Peng, Bo1; Wu, Guojun1; Lin, Yuan1; Wang, Qian2; Su, Zhaohui1
2011-09-01
Source PublicationTHIN SOLID FILMS
ISSN0040-6090
Volume519Issue:22Pages:7712-7716
AbstractLow 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.
KeywordMultilayers Self-assembly Dielectric Constants Cowpea Mosaic Virus Polyimides
DOI10.1016/j.tsf.2011.05.047
Indexed BySCI
Language英语
WOS IDWOS:000295057000016
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/72490
Collection中国科学院化学研究所
Corresponding AuthorSu, Zhaohui
Affiliation1.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
Recommended Citation
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.
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