Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan 300, Republic of China.
J Fluoresc. 2011 Jul;21(4):1599-605. doi: 10.1007/s10895-011-0848-9. Epub 2011 Jan 28.
A new 7-nitrobenz-2-oxa-1,3-diazole (NBD) derived fluorescent probe (1) exhibiting high selectivity for Cu(2+) detection, produced significant fluorescence quenching in the presence of Cu(2+) ion, while the metal ions Ca(2+), Cd(2+), Co(2+), Fe(2+), Hg(2+), Mg(2+), Mn(2+), Ni(2+) and Zn(2+) produced only minor changes in fluorescence. The apparent association constant (K (a)) for Cu(2+) binding in chemosensor 1 was found to be 1.22 × 10(3) M(-1). The maximum fluorescence quenching activity caused by Cu(2+) binding to 1 was observed over the pH range 6-10.
一种新的 7-硝基苯并-2-氧杂-1,3-二唑（NBD）衍生荧光探针（1）对 Cu(2+)检测具有高选择性，在存在 Cu(2+)离子时，产生显著的荧光猝灭，而 Ca(2+)、Cd(2+)、Co(2+)、Fe(2+)、Hg(2+)、Mg(2+)、Mn(2+)、Ni(2+)和 Zn(2+)等金属离子仅引起荧光的微小变化。在化学传感器 1 中，Cu(2+)结合的表观结合常数（K(a)）被发现为 1.22 × 10(3) M(-1)。观察到 Cu(2+)与 1 结合引起的最大荧光猝灭活性在 pH 值 6-10 范围内。
