Selective Detection of Multicarboxylate Anions based on “Turn on” Electron Transfer by Self‐Assembled Molecular Rectangles
作者:Anurag Mishra、Sunmi Lee、Hyunuk Kim、Timothy R. Cook、Peter J. Stang、Ki‐Whan Chi
DOI:10.1002/asia.201200488
日期:2012.11
tetranuclear cations of the general formula [Ru4(arene)4()2(O O)2]4+. Both rectangles were isolated in good yields as triflate salts and were characterized by multinuclear NMR, ESI‐MS, UV/Vis, and photoluminescence spectroscopy. The crystal structure of 5 was determined by X‐ray diffraction. Luminescent rectangle 5 was used for anion sensing with an amide ligand as a hydrogen‐bond donor and an arene–ruthenium
通过两种不同的双核芳烃钌配合物[Ru 2 ( arene ) 2 (O O) 2 Cl 2 ] (arene= p ‐伞花烃; O O = 2,5 -二羟基-1,4-苯醌 ( 2 )、6,11-二羟基-5,12-并四苯二酸 ( 3 )) 与不对称酰胺( N- [4-(吡啶-4-基乙炔基)苯基]异烟酰胺) 供体配体1在甲醇中在AgO 3 SCF 3存在下,形成通式[Ru 4 (芳烃) 4 ( ) 2 (O O) 2 ] 4+的四核阳离子。这两个矩形均以三氟甲磺酸盐的形式以良好的产率分离出来,并通过多核 NMR、ESI-MS、UV/Vis 和光致发光光谱进行了表征。通过X射线衍射测定了5的晶体结构。发光矩形5用于阴离子传感,其中酰胺配体作为氢键供体,芳烃-钌受体作为信号单元。矩形5在 UV/Vis 滴定实验中以 1:1 的比例强烈结合多羧酸根阴离子,例如草酸根、酒石酸根和柠檬酸根,与单阴离子(例如