Zn2+/Cd2+ optical discrimination by fluorescent chemosensors based on 8-hydroxyquinoline derivatives and sulfur-containing macrocyclic units
作者:M. Carla Aragoni、Massimiliano Arca、Andrea Bencini、Claudia Caltagirone、Alessandra Garau、Francesco Isaia、Mark E. Light、Vito Lippolis、Carlos Lodeiro、Marta Mameli、Riccardo Montis、M. Cristina Mostallino、Anna Pintus、Stefano Puccioni
DOI:10.1039/c3dt51292d
日期:——
fluorimetric titrations indicated L1 as the only member of the family of ligands to give a selective CHEF-type response to the presence of Zn2+ in MeCN–H2O (1 : 1, v/v) solutions, which allowed imaging of this metal ion in Cos-7 cells in vitro. The other ligands either did not show any fluorescence response (L3, L4) to any of the metal ions considered (Cu2+, Zn2+, Cd2+, Hg2+ and Pb2+) or gave (L2) a CHEF-type
四种基于金属的新型荧光化学传感器 8-羟基喹啉 合成并表征了(8-HDQ)衍生物和含硫大环单元 1-(5-氯-8-羟基-7-喹啉基甲基)-1-氮杂-4,7,10-三硫代环十二烷(L1),1-(5-氯-8-羟基-7-喹啉基甲基)-1-氮杂-4,13-二硫杂-7,10-二氧杂环戊烷(L2),1-(8-羟基-2-喹啉基甲基)-1-氮杂-4,7,10-三硫代环十二烷(L3),以及1-(8-羟基-2-喹啉基甲基)-1-氮杂-4,13-二硫-7,10-二氧杂环十五烷(L4)。初步的荧光滴定表明,L1是对MeCN–中存在的Zn 2+具有选择性CHEF型反应的配体家族的唯一成员。高氧2(1:1,v / v)溶液,可在Cos-7细胞中对该金属离子进行体外成像。其他配体对所考虑的任何金属离子(Cu 2 +,Zn 2 +,Cd 2 +,Hg 2+和Pb 2+)均未表现出任何荧光响应(L3,L4),或者给出了(L2)CHEF对Cd