Fabricating a novel supramolecular light-activated platform based on internal-driven forces induced by the UV-light

查看全文 作　　者：Xiaoni [1]Qi;Weichun [1]Li;Bingbing [1]Shi;Youming [1]Zhang;Hong [1]Yao;Qi [1]Lin;Taibao [1]Wei 机构地区：[1]Key Laboratory of Eco-Environmental Polymer Materials of Gansu Province,College of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou 730070,China 出　　处：《Chinese Chemical Letters》索引2022年第33卷第12期,共4页 基　　金：supported by the National Natural Science Foundation of China(NSFC,Nos.22165027,22061039,22001214);Gansu Province Innovation Star(No.2021CXZX-183). 摘　　要：Recently,exploiting a novel supramolecular fabrication pathway have drawn great attention.To this endeavor,we firstly designed and reported an original light-activated platform based on the internal-driven forces of macrocyclic host by hiring the pillar[5]arene as the host molecule(H)and phenazine derivatives acting as an energetic guest molecule(G).Surprisingly,after adding the H solution into G system,the intensive fluorescence emission of the G molecule rapidly decreased under the irradiation of the UV-light(254 nm)until absolutely quenching.Delightfully,different from the traditional supramolecular host-guest interaction,the fluorescent emission of G molecule could be recovered after irradiating under the nature light.In view of this interesting observations,the interaction mechanism was carefully investigated by a series of characterizations.Those results suggested that the G molecule was easily threaded into the macrocyclic cavity(H)under the internal-driven forces induced by the UV-light irradiation,forming a 1:1 host-guest complex.Moreover,taking advantage of this especial feature,the light-activated platform of host-guest complex was further applied for ink-free light-driven printing materials,exhibiting great potential in the real application. 关 键 词：Light-activated platform Pillar[5]arene Phenazine derivatives Internal-driven forces UV-LIGHT