%0 Journal Article
%T Conformations and adsorption behavior of poly(allylamine hydrochloride) studied by single molecule force spectroscopy<br>Conformations and adsorption behavior of poly（allylamine hydrochloride） studied by single molecule force spectroscopy
%A YU Ying
%A WANG Fang
%A SHI WeiQing
%A WANG LiYan
%A WANG WenBin
%A SHEN JiaCong
%A <br>
%J 科学通报(英文版)
%D 2008
%I 
%X Poly(allylamine hydrochloride) (PAH), which is frequently used in fabricating polyelectrolyte multilayer films, was studied by single molecule force spectroscopy (SMFS). Plenty of force-extension curves with a long plateau were obtained in water, indicating that train-like structure was predominant when PAH was adsorbed on the substrate. It was found that the peak-type force-extension curves of PAH in water were not able to be fitted by the modified freely-jointed chain model. Additionally, there was a flat region in the derivative of force-extension curves. Thus, it was inferred that PAH chain in water was in a special conformation and underwent a "conformational transition" under the stretching of an external force. This phenomenon did not appear in the SMFS experiment in 1 mol/L urea solution, which indi-cated that urea was able to break the special conformation.
%K conformation
%K adsorption
%K single molecule force spectroscopy (SMFS)<br>光谱学
%K 单分子
%K 吸附
%K 丙烯胺
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=FCA44103A979C8A07DE2C497FC7C006D&yid=67289AFF6305E306&vid=8E6AB9C3EBAAE921&iid=CA4FD0336C81A37A&sid=BC12EA701C895178&eid=96C778EE049EE47D&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=40