A Hexanuclear Cadmium Metal-Organic Framework Exhibiting Dual Mechanisms to Trigger a Fluorescence-Quenching Response toward Iron(III) Ions
A Hexanuclear Cadmium Metal-Organic Framework Exhibiting Dual Mechanisms to Trigger a Fluorescence-Quenching Response toward Iron(III) Ions
复制标题
具有双重机制的六核镉金属有机框架可引发对铁 (III) 离子的荧光猝灭响应
DOI：
10.1002/ejic.201701290
复制
发表时间：
2018-03-07
影响因子：
2.3
通讯作者：
Zhang, Ying-Hui
中科院分区：
文献类型：
--
作者：
Li, Long-Sheng;Wang, Xi;Zhang, Ying-Hui
合成了一种以4-（1h -吡唑-4-羧基氨基）苯甲酸（H2L）为基料，具有三维微孔结构的六核Cd-II金属有机骨架(1)。值得注意的是，1对Fe3+离子表现出独特的荧光猝灭响应，具有高选择性和灵敏度(Stern-Volmer常数K-SV = 2.07x10（4) m(-1)）。这种响应是吸收竞争和能量转移机制共同作用的结果。此外，光谱分析表明，能量转移机制对1的荧光猝灭起主导作用。
A hexanuclear Cd-II metal-organic framework (1) based on 4-(1H-pyrazole-4-carboxamido)benzoic acid (H2L) and featuring a three-dimensional microporous framework was synthesized. Notably, 1 shows a unique fluorescence-quenching response toward Fe3+ ions with high selectivity and sensitivity (Stern-Volmer constant K-SV = 2.07x10(4) m(-1)). The response is attributable to the coaction of absorption competition and energy-transfer (ET) mechanism. Furthermore, spectral analysis indicates that the energy-transfer mechanism makes the dominant contribution to the fluorescence quenching of 1.