氮杂对环吩CP44与萘衍生物超分子体系研究

Study on Supramolecular Systems of Naphthalene Derivative with the Host CP44

用紫外吸收光谱法、荧光光谱法和同步扫描荧光光谱法对主体分子ＣＰ４４与α－萘酚、β－萘酚、２， ６－二羟基茶和６，７－二羟基－２－萘磺酸客体分子形成超分子体系进行了研究．化学计量法表明：主体分子 ＣＰ４４与萘衍生物客体分子形成１：１的超分子体系；ＣＰ４４与α－萘酚的包结配位反应是热焓驱动的包结配位反 应，ＣＰ４４与β-萘酚，２，６－二羟基萘或６，７－二羟基－２-萘磺酸是熵驱动包结配位反应．荧光探针表明：主体 ＣＰ４４能对α－萘酚、β－萘酚同分异构体进行分子识别．

Supramolecular systems of the host CP44 with α-naphthol, β-naphtho1, 2, 6-dihydroxyl naphthalene and 2,3 -dihydroxyl naphthalen-6-sulfonic acid were studied by UV spectroscopy, fluorescence spectroscopy and syn-chronous fluorimetry. The supramolecular system stoichiometry is 1: 1 for all naphthalene derivative complex guests with host CP44. The complex formation reaction of CP44 with β-naphthol was promoted by heat content, where as the complex formation reactions of CP44 with β- naphthol, 2, 6-dihydroxyl naphthalene and 2, 3-dihydroxyl naph-thalen-6-sulfonic acid were promoted by entropy increase. It was proved that host CP44 can recognize the isomers, α-naphthol and β-naphthol by fluorescence probe.