Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China.
Org Lett. 2011 Dec 16;13(24):6370-3. doi: 10.1021/ol202657s. Epub 2011 Nov 11.
Host-guest complexation between two crown ether-based cryptands and two vinylogous viologens has been studied. Formation of [2]pseudorotaxanes from a dibenzo-24-crown-8-based cryptand and these vinylogous viologens can be reversibly controlled by adding and removing potassium cation in acetone. Furthermore, the complexation between a bis(m-phenylene)-32-crown-10-based cryptand and a vinylogous viologen exhibits a high association constant, 1.18 × 10(6) M(-1) in acetone, and leads to the formation of a supramolecular poly[2]pseudorotaxane in the solid state.
已研究了两种冠醚型穴醚与两种乙烯基氧代二氮杂轮烷之间的主客体络合作用。通过在丙酮中添加和除去钾阳离子，可以可逆地控制基于二苯并-24-冠-8 的穴醚和这些乙烯基氧代二氮杂轮烷形成[2]假轮烷。此外，基于双（间苯二酚）-32-冠-10 的穴醚与乙烯基氧代二氮杂轮烷的络合作用表现出高的结合常数，在丙酮中为 1.18×10(6) M(-1)，并导致在固态下形成超分子聚[2]假轮烷。
