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Citation: WU Guo-Jun, SU Zhao-Hui. Preparation of Sulfonated POSS and Its Electrostatic Assembly with Polyelectrolyte[J]. Chinese Journal of Applied Chemistry, ;2008, 25(3): 270-275. shu

Preparation of Sulfonated POSS and Its Electrostatic Assembly with Polyelectrolyte

WU Guo-Jun ^a,b ,
SU Zhao-Hui ^a,,

1.
a State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022;
2.
b Graduate School of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing

Corresponding author: SU Zhao-Hui,
Received Date: 26 October 2007
Available Online: 5 December 2007
Fund Project: 国家自然科学基金(50403008,20423003) (50403008,20423003)基金委创新群体(50621302)资助项目 (50621302)

Octa(phenyl)silsesquioxane(POSS),a cubic cage-like nano particle was modified to introduce negative charges to the particle via sulfonation,and the structure of the sulfonation product,SOPS,was confirmed by FTIR and NMR.Ultra-thin hybrid films were fabricated via layer-by-layer self-assembly of the SOPS and poly(allylamine)(PAH).The assembly process was studied by quartz crystal microgravimetry(QCM),UV-Vis spectroscopy,contact angle(CA) measurement,and X-ray photoelectron spectroscopy(XPS).The deposited oligo-charged SOPS was found to desorb when in contact with PAH solution.However,when the assembly was carried out at higher pH,the desorption of SOPS was effective suppressed,and SOPS/PAH multilayers were obtained.This provides a facile and effective approach to fabrication of hybrid thin films containing inorganic nano particles.
- self-assembly,
- POSS,
- polyelectrolyte,
- multilayer film
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