Polyhedral oligomeric silsesquioxane nanocomposite thin films via layer-by-layer electrostatic self-assembly

doi:10.1021/cm0607583

CORC > 化学研究所 > 中国科学院化学研究所

	Polyhedral oligomeric silsesquioxane nanocomposite thin films via layer-by-layer electrostatic self-assembly
	Wu, Guojun ; Su, Zhaohui
刊名	CHEMISTRY OF MATERIALS
	2006-08-08
卷号	18 期号:16 页码:3726-3732
ISSN号	0897-4756
DOI	10.1021/cm0607583
英文摘要	Fabrication of ultrathin polymer composite films with low dielectric constants has been demonstrated. Octa( aminophenyl) silsesquioxane (OAPS) was synthesized and assembled with poly( acrylic acid) (PAA) and poly( styrene sulfonate) (PSS) via a layer-by-layer electrostatic self-assembly technique to yield nanoporous ultrathin films. The OAPS was soluble in water at pH 3 or lower, and suitable pH conditions for the OAPS/PAA and OAPS/PSS assemblies were determined. The multilayer formation process was studied by contact angle analysis, X-ray photoelectron spectroscopy, atomic force microscopy, quartz crystal microgravimetry, UV-vis spectroscopy, and ellipsometry. The multilayer growth was found to be steady and uniform, and the analysis of the film surface revealed a rough topography due to OAPS aggregates. The incorporation of porous OAPS molecules into the thin films significantly lowered their dielectric constants. The OAPS/PAA multilayer thin film thus prepared exhibited a dielectric constant of 2.06 compared to 2.58 for pure PAA film. The OAPS/PAA multilayer film was heated to effect cross-linking between the OAPS and the PAA layers, and the transformation was verified by reflection-absorption Fourier transform infrared spectroscopy. The stability of the film was found to significantly improve by the cross-linking via amide formation.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000239396900020
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/58569]
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, Peoples R China 2.Chinese Acad Sci, Grad Sch, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Wu, Guojun,Su, Zhaohui. Polyhedral oligomeric silsesquioxane nanocomposite thin films via layer-by-layer electrostatic self-assembly[J]. CHEMISTRY OF MATERIALS,2006,18(16):3726-3732.
APA	Wu, Guojun,&Su, Zhaohui.(2006).Polyhedral oligomeric silsesquioxane nanocomposite thin films via layer-by-layer electrostatic self-assembly.CHEMISTRY OF MATERIALS,18(16),3726-3732.
MLA	Wu, Guojun,et al."Polyhedral oligomeric silsesquioxane nanocomposite thin films via layer-by-layer electrostatic self-assembly".CHEMISTRY OF MATERIALS 18.16(2006):3726-3732.