Luminescent metalloreceptors with pendant macrocyclic ionophore: Synthesis, characterization, electrochemistry and ion-binding study
作者:Subrata Patra、Vinod P. Boricha、K.R. Sreenidhi、E. Suresh、Parimal Paul
DOI:10.1016/j.ica.2010.01.003
日期:2010.5
synthesized and their luminescence and electrochemical properties have been investigated. Ion-binding study of these fluoroionophore with the anions F − , Cl − , Br − , I − , H 2 PO 4 - , ClO 4 - , NO 3 - , BF 4 - , CH 3 COO − , and HSO 4 - and cations Na + , K + , Mg 2+ , Ca 2+ , Zn 2+ , Ba 2+ , Sr 2+ Cd 2+ , Hg 2+ , Pb 2+ and Cu 2+ , monitored by luminescence and 1 H NMR spectral changes, reveal strong interactions
摘要合成了以钌(II)联吡啶单元为荧光团,侧链大环单元为离子载体的金属受体,并对其发光和电化学性质进行了研究。这些氟离子与阴离子F-,Cl-,Br-,I-,H 2 PO 4-,ClO 4-,NO 3-,BF 4-,CH 3 COO-和HSO 4-的离子结合研究通过发光和1 H NMR光谱监测阳离子Na +,K +,Mg 2+,Ca 2+,Zn 2+,Ba 2+,Sr 2+ Cd 2+,Hg 2+,Pb 2+和Cu 2+的变化揭示了H 2 PO 4-和F-对2和3以及Cu 2+仅对3的强相互作用。已经进行了2和3的发光滴定以确定结合常数(K s),并且计算值在2.85×10 2至4.48×10 4 M -1的范围内。随着F-和H 2 PO 4-浓度的增加,2和3的1 H NMR光谱变化显示出CO NH质子的低场位移,表明其参与了与阴离子的络合物形成。已分离出2和3的H 2 PO 4-加合物,并通过1