Recently,exploiting a novel supramolecular fabrication pathway have drawn great attention.To this en-deavor,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 in-tensive 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.

Xiaoni Qi;Weichun Li;Bingbing Shi;Youming Zhang;Hong Yao;Qi Lin;Taibao Wei

Key Laboratory of Eco-Environmental Polymer Materials of Gansu Province,College of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou 730070,China

中国化学快报（英文版）

[1]Xiaoni Qi;Weichun Li;Bingbing Shi;Youming Zhang;Hong Yao;Qi Lin;Taibao Wei-.Fabricating a novel supramolecular light-activated platform based on internal-driven forces induced by the UV-light)[J].中国化学快报（英文版）,2022(12):5065-5068

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