Interaction of Cucurbit[n = 6∼8]urils and Benzimidazole Derivatives |
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| Authors: | Jun-Ying Ge Sai-Feng Xue Qian-Jiang Zhu Zhu Tao Jian-Xin Zhang |
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| Institution: | (1) Department of Chemistry and Engineering, Weifang Education College QingZhou, Shandong, 262500, Peoples Republic of China;(2) Institute of Applied Chemistry, Guizhou University, Guiyang, 550025, Peoples Republic of China;(3) Key Laboratory of Chemistry for Natural Products of Guizhou Province, Guiyang, 550002, Peoples Republic of China |
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| Abstract: | The structures and optical properties of host–guest complexes produced from cucurbitn = 6–8]urils and some benzimidazole derivatives have been investigated by 1H NMR spectroscopy, electronic absorption spectroscopy and fluorescence spectroscopy. The experimental results reveal that
calculations of A∼NQn]/Nguest and If∼NQn]/Nguest for the same association complex both support a good fit to an identical binding model. In particular, the A∼NQn]/Nguest, If∼NQn]/Nguest calculations and the 1H NMR determinations for three Q6]–ge(1∼3) complexes and three Q8]–ge(1∼3) complexes all support a binding model of 1:1
and 1:2 respectively. |
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| Keywords: | cucurbit[n = 6∼ 8]urils benzimidazole derivatives host– guest 1H NMR spectroscopy electronic absorption spectroscopy fluorescence spectroscopy |
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