Photochromism of a naphthalene-bridged imidazolc dimer constrained to the "anti" confbrmation
Photochromism of a naphthalene-bridged imidazolc dimer constrained to the "anti" confbrmation
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受限于“反”构象的萘桥咪唑二聚体的光致变色
DOI：
10.1021/ol401012u
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发表时间：
2013
期刊：
影响因子：
5.2
通讯作者：
Masayuki Kobayashi and Jiro Abe
中科院分区：
文献类型：
--
作者：
Katsuya Mutoh;Kentaro Shima;Tetsuo Yamaguchi;Masayuki Kobayashi and Jiro Abe
合成了反式-1，8-双TPI-萘，其中两个咪唑环被限制为反构象，导致第一个形成的桥连咪唑二聚体的1，4 ′-异构体。自由基的颜色不同于以前报道的桥联咪唑基，这是因为自由基之间的分子内相互作用由于反构象而变弱。这种分子设计将是一种有利的策略，以控制应用于眼科镜片的桥接咪唑二聚体的自由基的颜色。
Anti-1,8-bisTPI-naphthalene in which two imidazole rings are constrained to ananti-conformation leading to the first-formed 1,4′-isomer of the bridged imidazole dimer has been synthesized. The color of the radicals is different from that of the previously reported bridged-imidazolyl radicals because the intramolecular interaction between the radicals becomes weak due to theanti-conformation. This molecular design would be a profitable strategy to control the color of the radicals of the bridged imidazole dimer for application in ophthalmic lenses.