一种基于新型罗丹明 B 的“关-开”型荧光传感器，用于选择性识别铜（II）离子。
A novel rhodamine B-based "off-on'' fluorescent sensor for selective recognition of copper (II) ions.
机构信息
College of Chemistry, Dalian University of Technology, Dalian 116024, China.
State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China.
出版信息
Talanta. 2018 Jul 1;184:143-148. doi: 10.1016/j.talanta.2018.01.073. Epub 2018 Feb 2.
A novel rhodamine based sensor RBH was developed and synthesized by rhodamine B with 3-methyl-2-benzothiazolinone hydrazone, which exhibited high selectivity and sensitivity for sensing Cu ions in the presence of other important relevant metal ions in aqueous acetonitrile. As an "off-on" fluorescent sensor, RBH exhibited a UV-vis absorption increase at 570 nm and a 132-fold significant fluorescence enhancement at 580 nm with a distinct color change from colorless to purple upon the addition of Cu ions. The fluorescence intensity of RBH is linear with the Cu ions concentration with low limit of detection. Furthermore, the sensor RBH has been successfully utilized for fluorescence imaging of Cu ions in living cells. The sensor could potentially recognize Cu ions in biological system.
一种新型的基于罗丹明的传感器 RBH 通过罗丹明 B 与 3-甲基-2-苯并噻唑啉酮腙合成，在乙腈水溶液中存在其他重要相关金属离子的情况下，对 Cu 离子具有高选择性和灵敏度。作为一种“关-开”荧光传感器，RBH 在 570nm 处表现出紫外-可见吸收增加，在 580nm 处荧光增强 132 倍，并且在加入 Cu 离子后颜色从无色变为紫色发生明显变化。RBH 的荧光强度与 Cu 离子浓度呈线性关系，检测限低。此外，该传感器已成功用于活细胞中 Cu 离子的荧光成像。该传感器有望在生物体系中识别 Cu 离子。
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