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- Title
Visible Light–Induced Supra‐Amphiphilic Switch Leads to Transition from Supramolecular Nanosphere to Nanovesicle Activated by Pillar[5]arene‐Based Host–Guest Interaction.
- Authors
Li, Pengyu; Yao, Qianfang; Lü, Baozhong; Ma, Guiping; Yin, Meizhen
- Abstract
A photoresponsive host–guest supramolecular complex (WP5⊃G) constructed by water‐soluble pillar[5]arene (WP5) and spiropyran derivative (G) is presented. The spontaneous isomerization of G from spiropyran (SP) form to ring‐opened merocyanine (MC) form happens either alone or in WP5⊃G in aqueous media. Irradiated by visible light, G can be converted into SP form completely and the hydrophilicity will be changed. G and WP5⊃G are both verified to self‐assemble into nanospheres. Upon exposure to visible light, WP5⊃G reassemble into nanovesicles due to the change of supra‐amphiphilicity, while G alone does not have this transition. Obviously, WP5 takes the key role that activates the photoinduced morphological transition. A pillar[5]arene‐based host–guest supramolecular system (WP5⊃G) is designed and constructed. The photoresponsive feature of supramolecular assemblies is investigated. WP5 takes the key role that activates the photoinduced morphologic transition, so that morphological changes from nanospheres to nanovesicles are observed only in the system of WP5⊃G upon visible light irradiation.
- Subjects
AMPHIPHILES; SUPRAMOLECULAR chemistry; TRANSITION metals; SPIROPYRANS; MEROCYANINES
- Publication
Macromolecular Rapid Communications, 2018, Vol 39, Issue 20, pN.PAG
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.201800133