Visible Light–Induced Supra‐Amphiphilic Switch Leads to Transition from Supramolecular Nanosphere to Nanovesicle Activated by Pillar[5]arene‐Based Host–Guest Interaction,Macromolecular Rapid Communications

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Visible Light–Induced Supra‐Amphiphilic Switch Leads to Transition from Supramolecular Nanosphere to Nanovesicle Activated by Pillar[5]arene‐Based Host–Guest Interaction
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2018-05-22 , DOI: 10.1002/marc.201800133
Pengyu Li ₁ , Qianfang Yao ₁ , Baozhong Lü ₁ , Guiping Ma ₁ , Meizhen Yin ₁

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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.

中文翻译：

可见光诱导的超两亲性转换导致从超分子纳米球到由柱子[5]芳烃基宿主-客体相互作用激活的纳米囊泡的转变

介绍了一种由水溶性支柱[5]芳烃（WP5）和螺吡喃衍生物（G）构成的光响应宿主-客体超分子复合物（WP5⊃G）。G从螺吡喃（SP）形式自发异构成开环的花菁（MC）形式，既可以单独发生，也可以在水性介质中以WP5⊃G的形式发生。在可见光的照射下，G可以完全转化为SP形式，并且亲水性会发生变化。G和WP5⊃G均经过验证可自组装成纳米球。暴露在可见光下，WP5⊃G由于超两亲性的改变而重新组装成纳米囊泡，而单独的G并没有这种转变。显然，WP5发挥了激活光诱导形态转变的关键作用。

更新日期：2018-05-22

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