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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.5b01147
|2 doi
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|a eng
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| 100 |
1 |
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|a Zhao, Wenrong
|e verfasserin
|4 aut
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| 245 |
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|a Chiroptical vesicles and disks that originated from achiral molecules
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|c 2015
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|a Text
|b txt
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|a ƒaComputermedien
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|a Date Completed 29.07.2015
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|a Date Revised 02.06.2015
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a We report a chiral gel of vesicles and disklike micelles that originated from achiral molecules. The supramolecular chirality was obtained via regulating pH, in which a sol-gel-sol transition in a colloidal system consisting of a gelator, 4,4-di(2,3-dicarboxylphenoxyl)azobenzene (AzoNa4), and a zwitterionic surfactant, tetradecyldimethylamine oxide (C14DMAO), happened. The supramolecular chirality was related to the state of aggregation, i.e., only the condensed gels show chiral sense and sols are chiral-silent. The coexistence of vesicles and disklike micelles was captured for the first time in supramolecular chiral hydrogels by cryo- and freeze-fracture transmission electron microscopy (cryo- and FF-TEM) observations. Ascribed to the photoisomerization of the azobenzene units, upon alternative UV/visible light irradiation, the gel chirality can be switched reversibly with the macroscopic changes between vesicles/disks and wormlike micelles. A pH- and light-dual-responsive chiroptical switch can be constructed, which may require understanding the regulating membrane permeability and reagent release of structural transformation through photoisomerization and also require understanding the origin of gelation-induced supramolecular chirality completely based on achiral molecules
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|a Journal Article
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| 700 |
1 |
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|a Feng, Lei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xu, Lu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xu, Wenlong
|e verfasserin
|4 aut
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| 700 |
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|a Sun, Xuan
|e verfasserin
|4 aut
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| 700 |
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|a Hao, Jingcheng
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 31(2015), 21 vom: 02. Juni, Seite 5748-57
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|x 1520-5827
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| 773 |
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|g volume:31
|g year:2015
|g number:21
|g day:02
|g month:06
|g pages:5748-57
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|u http://dx.doi.org/10.1021/acs.langmuir.5b01147
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