A 7-nitrobenz-2-oxa-1,3-diazole based highly sensitive and selective turn-on chemosensor for copper(ii) ion with intracellular application without cytotoxicity
作者:Tarun Mistri、Rabiul Alam、Malay Dolai、Sushil Kumar Mandal、Anisur Rahman Khuda-Bukhsh、Mahammad Ali
DOI:10.1039/c3ob27405e
日期:——
3-diazole (NBD) derived turn-on fluorescent probe (1) exhibits a reversible binding to Cu2+ ion in presence of other metal ions, giving ∼20 fold increase in fluorescence intensity. The apparent association constant (Ka) for Cu2+ was found to be 2.62 × 104 M−1. The intracellular Cu2+ imaging behaviour of chemosensor 1 on HeLa cells studied by fluorescence microscopy revealed that after incubation with 1
7-硝基苯-2-氧杂-1,3-二唑(NBD)衍生的开启式荧光探针(1)在存在其他金属离子的情况下与Cu 2+离子具有可逆结合,荧光强度增加约20倍。表观缔合常数(ķ一对Cu)2+被发现是2.62×10 4中号-1。化学传感器1在HeLa细胞上的细胞内Cu 2+成像行为通过荧光显微镜研究表明,与1个细胞温育后,外源Cu 2+会显示出强烈的荧光被引入细胞。因此,该探针具有易用性,对MeCN–中的Cu 2+具有高灵敏度和选择性的特点高氧2 (1:1,v / v)具有细胞成像的可能性,而没有或可忽略的细胞毒性。