Specific F- binding to phenyl ring of aromatic polymers

doi:10.1016/j.jfluchem.2009.07.014

CORC > 北京大学 > 化学与分子工程学院

	Specific F- binding to phenyl ring of aromatic polymers
	Xu, Ling ; Li, Xin ; Yuan, Liyong ; Zhai, Maolin ; Peng, Jing ; Li, Jiuqiang
刊名	氟化学杂志
	2009
关键词	Aromatic polymer Gels F- adsorption Phase behavior (Phenyl)CH center dot center dot center dot F-(H2O)(n) HYDROGEN-BONDING HYDRATION MOLECULAR-ORBITAL CALCULATIONS POLY(4-VINYL PHENOL) POLY(N-VINYL-2-PYRROLIDONE) GEL ION-SPECIFICITY BEHAVIORS SOLVENT LIQUID SYSTEM XPS
DOI	10.1016/j.jfluchem.2009.07.014
英文摘要	Most of the hydrogels deswell more remarkably in F- containing solutions than in other monovalent anion containing solutions. However, significant deswelling followed by abnormal reswelling of polymer gel in KF solutions with increasing F- concentration was observed in a series of polymer gels consisted of phenyl rings, for instance, poly(styrene sulfonic acid) (PSSA), hydroxypropyl methylcellulose phthalate (HPMCP) and poly(4-vinyl phenol) (P4VPh) gel. Driving force of this phenomenon was studied to reveal the specific interactions involved in the aqueous systems of aromatic polymers. Elemental analysis and XPS results suggest that F- is embedded to the gel by the physical adsorption of KF, as well as the interactions between phenyl ring and F-. Further theoretical calculations revealed that the interaction may be (phenyl)CH center dot center dot center dot F-(H2O)(n) interaction, which is stronger than (phenyl)CH center dot center dot center dot(H2O)(n) hydrogen bond. This kind of interaction decreases with the increasing water number and it is invalid when the surrounding water number is more than 5 for the phenol-F-(H2O)(n). system. Therefore, we conclude that F- could bind to phenyl ring via such (phenyl)CH center dot center dot center dot F-(H2O)(n) interaction in solutions with low hydrophilicity. The strong polarization effect of F- and (phenyl)CH center dot center dot center dot F-(H2O)(n) interaction are two important driving forces for the reswelling of gels. (C) 2009 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000271345400015&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Inorganic & Nuclear; Chemistry, Organic; SCI(E); 1; ARTICLE; 10; 959-965; 130
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/151311]
专题	化学与分子工程学院工学院
推荐引用方式 GB/T 7714	Xu, Ling,Li, Xin,Yuan, Liyong,et al. Specific F- binding to phenyl ring of aromatic polymers[J]. 氟化学杂志,2009.
APA	Xu, Ling,Li, Xin,Yuan, Liyong,Zhai, Maolin,Peng, Jing,&Li, Jiuqiang.(2009).Specific F- binding to phenyl ring of aromatic polymers.氟化学杂志.
MLA	Xu, Ling,et al."Specific F- binding to phenyl ring of aromatic polymers".氟化学杂志 (2009).