Unusually high selectivity of guest exchange in tert-butylthiacalix[4]arene clathrate producing more thermostable inclusion and memory of guest.
Unusually high selectivity of guest exchange in tert-butylthiacalix[4]arene clathrate producing more thermostable inclusion and memory of guest.
复制标题
叔丁基硫杂萼[4]芳烃包合物中客体交换的选择性异常高，产生更热稳定的客体包合和记忆。
DOI：
10.1021/jp3065739
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
V. Gorbatchuk
中科院分区：
文献类型：
--
作者：
S. Galyaltdinov;M. Ziganshin;A. Drapailo;V. Gorbatchuk
发现了杯芳烃与1,2-二氯乙烷（DCE）的叔丁基杯芳烃(1)包合物的新性质。在1·1.90DCE中客体交换某些有机化合物的蒸汽，得到包合物，在34-59°C时比用纯客体直接饱和无客体1制备的包合物更耐热。此外，客体交换可能产生在二元主客体系统中不能通过直接饱和形成的包合物。有些化合物，如水、甲苯和三氯乙烯，从含有1的包合物中排出DCE，但不超过痕量水平。包合物中DCE的残留量可以通过改变体系中水分和DCE比1·1.90来控制。主持人1可以记住甲醇后，它从嘉宾交换产品消除。这种记忆可以通过差示扫描量热法作为外效应来读取。只有甲醇和客人交换后才会被记住，这是一个真正的分子识别的例子。
New properties, earlier unknown for calixarenes, were found for tert-butylthiacalix[4]arene (1) clathrate with 1,2-dichloroethane (DCE). Guest exchange in 1·1.90DCE for vapors of some organic compounds gives clathrates, which are more thermostable at 34-59 °C than those prepared by direct saturation of guest-free 1 with pure guests. Besides, guest exchange may produce clathrates that cannot be formed by direct saturation in binary host-guest systems. Some compounds, like water, toluene, and trichloroethylene, expel DCE from its clathrate with 1 but are not included above the trace level. Residual contents of DCE in clathrate may be controlled by variation of water and 1·1.90DCE ratio in the studied system. Host 1 can remember methanol after its elimination from the guest exchange product. This memory can be read as an exoeffect by differential scanning calorimetry. Only methanol and only after guest exchange is remembered giving an example of a genuine molecular recognition.
影响因子：
16.6
作者：
Kiyohara, H;Nakamura, Y;Kobayashi, S
通讯作者：
Kobayashi, S