标题:Photoresponsive Self-Assembly of Surface Active Ionic Liquid
作者:Wu, Aoli; Lu, Fei; Sun, Panpan; Gao, Xinpei; Shi, Lijuan; Zheng, Liqiang
作者机构:[Wu, Aoli; Lu, Fei; Sun, Panpan; Gao, Xinpei; Zheng, Liqiang] Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R Ch 更多
通讯作者:Zheng, Liqiang
通讯作者地址:[Zheng, LQ]Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China.
来源:LANGMUIR
出版年:2016
卷:32
期:32
页码:8163-8170
DOI:10.1021/acs.langmuir.6b01937
摘要:A novel photoresponsive surface active ionic liquid (SAIL) 1-(4-methyl azobenzene)-3-tetradecylimidazoliurn bromide ([C(14)mimAzo]Br) with azobenzene located in the headgroup was designed. Reversible vesicle formation and rupture can be finely controlled by photostimuli without any additives in the aqueous solution of the single-tailed ionic liquid. The photoisomerization of the azobenzene derivative was investigated by H-1 NMR and UV-vis spectroscopy. Density functional theory (DFT) calculations further demonstrate that trans-[C(14)mimAzo]Br has less negative interaction energy, which is beneficial to aggregate formation in water. The incorporation of trans-azobeniene group increases the hydrophobicity of the headgroup and reduces the electrostatic repulsion by delocalization of charge, which are beneficial to the formation of vesicles. However, the bend of cis-azobenzene makes the cis-isomers have no ability to accumulate tightly, which induces the rupture of vesicles. Our work paves a convenient way to achieve controlled topologies and self-assembly of single SAIL.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:12
Scopus被引频次:13
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84982275922&doi=10.1021%2facs.langmuir.6b01937&partnerID=40&md5=1d1da5aae057cf94231f86149eb1d02c
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