Entropy-controlled supramolecular photochirogenesis: enantiodifferentiating Z-E photoisomerization of cyclooctene included and sensitized by permethylated 6-O-benzoyl-beta-cyclodextrin.
Entropy-controlled supramolecular photochirogenesis: enantiodifferentiating Z-E photoisomerization of cyclooctene included and sensitized by permethylated 6-O-benzoyl-beta-cyclodextrin.
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DOI：
10.1039/b504948b
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发表时间：
2005-08
影响因子：
4.9
通讯作者：
G. Fukuhara;Tadashi Mori;T. Wada;Y. Inoue
中科院分区：
文献类型：
--
作者：
G. Fukuhara;Tadashi Mori;T. Wada;Y. Inoue
与非甲基化类似物的光敏作用相反，新型全甲基化单（6-O-苯甲酰基）-β-环糊精的超分子光手性显示出产物的对映体过量对温度的临界依赖性，并具有大的活化微分熵（-11 J K（-1）mol（-1）），这可能是柔性主体骨架的原因。
In contrast to the photosensitization with a non-methylated analogue, supramolecular photochirogenesis with a novel permethylated mono(6-O-benzoyl)-beta-cyclodextrin exhibited a critical dependence of the product's enantiomeric excess upon temperature, and possessed a large differential entropy of activation (-11 J K(-1) mol(-1)) for which the flexible host skeleton is likely to be responsible.