应用化学2011，Vol.28Issue(4)：464-470,7.DOI:10.3724/SP.J.1095.2011.00340
吡啶基咪唑[4,5-f]1,10-菲咯啉的合成、表征及与瓜环作用的光谱学考察
Synthesis, Characterization of Pyridylimidazo[4,5-f]1,10-phenanthroline Derivates and Their Spectroscopic Study after Interacted with Cucurbit[n]urils
摘要
Abstract
Two pyridyl imidazo[4,5-f] 1,10-phenanthroline derivates, namely 2-(3-pyridyl)-imidazo[4,5-f] 1,10-phenanthroline( Gl ) and 2-( 4-pyridyl) imidazo [ 4,5-f ] 1,10-phenanthroline ( G2 ) , were synthesized and characterized by elemental analysis, H NMR and MS. Under various concentrations of cucurbit[ n] urils (Q[n], n=6,7), the interaction of Q [ n ] with Gl and G2 were studied in buffer solutions with different pH values by using UV-Vis spectroscopy and fluorescence spectrophotometry. The results revealed that cucurbit [n]urils(n =6,7) form a 1∶1 complex with Gl, and Q[6] form a 1∶1 complex with G2 in acidic solution, fluorescent sensitizing effects of both Q [ 6 ] and Q [ 7 ] toward guests were determined. Under acidic solution Q[7] formed a 2- 1 complex with G2, and a fluorescent quenching effect of Q[7] on G2 was observed. Association constants(K) of Q[n] (n =6,7) with Gl were found to be 3. 00 × 104 L/mol, 1. 86 × 104 L/mol respectively, while those of Q[n](n =6,7) with G2 are 1. 64 × 104 L/mol and 1. 01 × 103 L/mol respectively. With decreasing acidity of the systems, the interaction between guests and Q[n](n =6,7) weakened and no interaction was observed under neutral conditions.关键词
菲咯啉衍生物/合成/瓜环/主客体包合作用/光谱法Key words
phenanthroline derivates, synthesis, cucurbit [ n ] urils, Rost-guest inclusion reaction, spectroscopic method分类
化学化工引用本文复制引用
黄智文,林友文,李光文..吡啶基咪唑[4,5-f]1,10-菲咯啉的合成、表征及与瓜环作用的光谱学考察[J].应用化学,2011,28(4):464-470,7.基金项目
福建医科大学教授学术发展基金计划(JS09004)资助项目 （JS09004）
