两种密切相关的铱(III)配合物作为比色和荧光化学传感器，用于水溶液中的亚硝酸盐，以不同的作用模式操作。

Two closely related iridium(III) complexes as colorimetric and fluorometric chemodosimeters for nitrite in aqueous solution operating along different modes of action.

机构信息

Center for Micro- and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein Strasse, D-57068 Siegen, Germany.

出版信息

Inorg Chem. 2011 Nov 7;50(21):10531-3. doi: 10.1021/ic201753v. Epub 2011 Oct 14.

DOI:10.1021/ic201753v

PMID:21999680

Abstract

Two closely related dual-channel chemodosimeters for nitrite in buffered aqueous acetonitrile were developed using (pq)(2)IrCl (1) and (ppy)(2)IrCl (2). In the UV-vis channel, the addition of nitrite caused visibly distinct color changes with both probes as a result of sizable absorption intensity enhancements. In the photoluminescence channel, the probes behaved oppositely upon the addition of nitrite. The emission was increased with 1, while it was quenched with 2. NMR and X-ray studies indicated that structurally very different η(1)-nitrito-N and η(2)-nitrito-O,O' complexes were formed. Linear relationships for the quantification were obtained in both channels, allowing one to analyze for NO(2)(-) in a range from 5 × 10(-5) to 2 × 10(-2) M.

摘要

两种双通道比色化学传感器，用于在缓冲的乙腈水溶液中检测亚硝酸盐，使用 (pq)(2)IrCl (1) 和 (ppy)(2)IrCl (2) 作为荧光团。在紫外-可见通道中，加入亚硝酸盐会导致两个探针的明显颜色变化，这是由于吸收强度显著增强的结果。在光致发光通道中，探针的行为相反。加入亚硝酸盐后，发射强度增加了 1，而 2 的发射强度被猝灭。NMR 和 X 射线研究表明，形成了结构非常不同的 η(1)-亚硝基-N 和 η(2)-亚硝基-O,O' 配合物。在两个通道中都得到了定量的线性关系，允许在 5×10(-5) 到 2×10(-2) M 的范围内分析 NO(2)(-)。