Encapsulation condition dependent photophysical properties of polypyridyl Ru(ii) complexes within a hydrogen-bonded capsule
Encapsulation condition dependent photophysical properties of polypyridyl Ru(ii) complexes within a hydrogen-bonded capsule
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DOI：
10.1039/c9dt00737g
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发表时间：
2019-04-28
影响因子：
4
通讯作者：
Umakoshi, Keisuke
中科院分区：
文献类型：
--
作者：
Horiuchi, Shinnosuke;Tanaka, Hiroto;Umakoshi, Keisuke
控制包封平衡是影响主客体缔合的关键策略。钌（ii）聚吡啶络合物盐悬浮在间苯二酚[4]芳烃的氯仿溶液中，得到了一个主-客体络合物，即使在溶液状态下，它也显示出结构化的发射光谱。相比之下，通过使用可溶性钌（ii）聚吡啶络合物盐通过均匀的封装条件获得的主体-客体络合物显示出加宽的发射光谱，这强烈依赖于由于封装平衡的主机的量。这些结果表明，一个简单的调制的封装技术确实是有前途的，一个简便的方法来控制超分子复合物的物理性质。
Controlling the encapsulation equilibrium is a key strategy to affect host-guest associations. Ruthenium(ii) polypyridyl complex salts suspended in a chloroform solution of resorcin[4]arene afforded a host-guest complex which showed structured emission spectra even in the solution state. In contrast, a host-guest complex obtained through homogeneous encapsulation conditions by using soluble ruthenium(ii) polypyridyl complex salts showed broadened emission spectra which strongly depended on the amount of the host owing to the encapsulation equilibrium. These results demonstrate that a simple modulation of the encapsulation technique is indeed promising and a facile approach to control the photophysical properties of supramolecular complexes.