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一种用于选择性检测氰化物的环金属化磷光铱配合物的高效探针。

An Efficient Probe of Cyclometallated Phosphorescent Iridium Complex for Selective Detection of Cyanide.

作者信息

Lin Nan, Ou Hui-Dan, Xu Qiyan, Jin Yan, Deng Wei, Yao Zi-Jian

机构信息

School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China.

School of Metallurgical Engineering, Anhui University of Technology, Maanshan 243032, China.

出版信息

ACS Omega. 2020 Feb 28;5(9):4636-4645. doi: 10.1021/acsomega.9b04364. eCollection 2020 Mar 10.

Abstract

A cyclometallated phosphorescent iridium-based probe to detect CN was prepared through a cyanide alcoholize reaction based on the C^N type main ligand and N^N type ancillary ligand (2-phenyl pyridine and 1,10-phenanthroline-5-carboxaldehyde, respectively). The efficient probe exhibited good sensitivity in response to CN in an CHCN and HO (95/5) mixture within a 1.23 μM detection limit. The response of PL is directly in line with the concentration of CN from 0 to 2.0 equiv. The PL investigation of other reactive anions proved the great selectivity to CN. Additionally, upon adding 1.0 equiv. of cyanide, the formation of cyanohydrin was correctly elucidated in H NMR, FT-IR, and mass spectra studies. The conspicuous results indicate that the iridium complex has the potential possibility of application in other biosystems related to CN.

摘要

通过基于C^N型主配体和N^N型辅助配体(分别为2-苯基吡啶和1,10-菲咯啉-5-甲醛)的氰化物醇解反应,制备了一种用于检测CN的环金属化磷光铱基探针。该高效探针在CHCN和HO(95/5)混合物中对CN表现出良好的灵敏度,检测限为1.23 μM。PL响应与0至2.0当量的CN浓度直接相关。对其他活性阴离子的PL研究证明了对CN具有高度选择性。此外,在加入1.0当量的氰化物后,通过核磁共振氢谱、傅里叶变换红外光谱和质谱研究正确阐明了氰醇的形成。这些显著结果表明,铱配合物在与CN相关的其他生物系统中具有潜在的应用可能性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f4a2/7066652/3dbf258f1b61/ao9b04364_0005.jpg

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