Interaction Models of Cucurbit(n=6,7,8) Urils and Imidazo[4,5，f]1,10-Phenanthroline Derivates
WANG Qiu-li1,XUE Sai-feng1*,MU Lan1,ZHU Qian-jiang1,TAO Zhu1,ZHANG Jian-xin2
1. Institute of Applied Chemistry, Guizhou University, Guiyang 550025, China 2. Key Laboratory of Chemistry for Natural Products of Guizhou Province, Guiyang 550002, China
Abstract：The interaction structures and optical properties of host-guest of cucurbit[n=6-8]urils with synthesized three imidazo-[4,5,f]1,10-phenathroline derivates were investigated by using 1H NMR technique, fluorescence spectrophotometry, and ultraviolet spectrophotometry. The experimental results reveal that cucurbit [6] uril (Q[6]) can only interact with guest salt of 2-(4-methyl)-phenyl-imidazo-[4,5,f]1,10-phenathroline (W1) with a ratio of 1∶1; however, cucurbit [7] uril (Q[7])can interact with all three guest salts of 2-(4-methylphenyl)-imidazo-[4,5,f]1,10-phenathroline(W1), 2-(2-methylphenyl)-imidazo-[4,5,f]1,10-phenathroline(W2)，and 2-(3-methyloxyl phenyl)-imidazo-[4,5,f]1,10-phenathroline(W3) with the same ratio of 1∶1; cucurbit [8] uril (Q[8]), except interaction with W1 with a ratio of 1∶2, can also interact with W2 and W3 with a ratio of 1∶1.
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