Photoresponsive self-assembled hexameric capsules based on calix[4]resorcinarenes bearing azobenzene dendron conjugates as side chains.
Photoresponsive self-assembled hexameric capsules based on calix[4]resorcinarenes bearing azobenzene dendron conjugates as side chains.
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DOI：
10.1039/c5ob00997a
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发表时间：
2015-07
影响因子：
3.2
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中科院分区：
文献类型：
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我们合成了带有偶氮苯树枝化基元共轭物作为侧链的杯[4]间苯二酚芳烃，其中偶氮苯部分是光响应单元，树枝化基元部分是胶囊不稳定单元，然后研究了它们自组装的六聚体胶囊结合客体包封在H2O饱和的CDCl 3中的光响应性质。结果发现，主体的偶氮苯树枝化基元侧链的反式至顺式光异构化与随后的胶囊不稳定化导致客体释放之间的相关性在很大程度上取决于树枝化基元部分的性质，例如它们的空间体积或亲水性。
We synthesized calix[4]resorcinarenes bearing various azobenzene dendron conjugates as side chains, wherein the azobenzene moiety is a photoresponsive unit and the dendron moiety is a capsule-destabilizing unit, and then studied the photoresponsive properties of their self-assembled hexameric capsules in conjunction with guest encapsulation in H2O-saturated CDCl3. It was found that correlation between the trans-to-cis photoisomerization of the azobenzene dendron side chains of hosts and the consequent capsule destabilization leading to guest release largely depends on the nature of the dendron moieties, such as their steric bulkiness or hydrophilicity.