Polarity-reversal-producing phase transfer of hydrophilic silver nanoclusters capped by a hyperbranched polymer from water to nonpolar organic solvents

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	Polarity-reversal-producing phase transfer of hydrophilic silver nanoclusters capped by a hyperbranched polymer from water to nonpolar organic solvents
	Qu, Fei ; Niu, Shuwen ; You, Jinmao
	2016-03-15
发表期刊	JOURNAL OF APPLIED POLYMER SCIENCE
摘要	Hyperbranched poly(ethylene imine) (PEI)-capped Ag nanoclusters, synthesized starting from an aqueous environment, dispersed well in water and most polar organic solvents. However, with the addition of 1,4-dioxane, the PEI-capped Ag nanoclusters could be separated completely to obtain hydrophilic and hydrophobic Ag nanoclusters. Through this facile method, the successful phase transfer of PEI-capped Ag nanoclusters from the aqueous phase to the nonpolar organic phase, such as from water to carbon tetrachloride, chloroform, and methylene bichloride, was easily realized. The polarity reversal of Ag nanoclusters were considered to be associated with the conformational change of PEI on the basis of the hydrophobic methylene groups of polymer backbone facing the external side or internal side, and this polarity reversal was irreversible. Moreover, PEIs with higher molecular weights showed a higher efficiency of phase transfer of the Ag nanoclusters. (c) 2015 Wiley Periodicals, Inc.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/22766
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Qu, Fei,Niu, Shuwen,You, Jinmao. Polarity-reversal-producing phase transfer of hydrophilic silver nanoclusters capped by a hyperbranched polymer from water to nonpolar organic solvents[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2016.
APA	Qu, Fei,Niu, Shuwen,&You, Jinmao.(2016).Polarity-reversal-producing phase transfer of hydrophilic silver nanoclusters capped by a hyperbranched polymer from water to nonpolar organic solvents.JOURNAL OF APPLIED POLYMER SCIENCE.
MLA	Qu, Fei,et al."Polarity-reversal-producing phase transfer of hydrophilic silver nanoclusters capped by a hyperbranched polymer from water to nonpolar organic solvents".JOURNAL OF APPLIED POLYMER SCIENCE (2016).