Twiringiyimana Raïssa, Ashfeld Brandon L
Department of Chemistry and Biochemistry, University of Notre Dame, IN 46556, USA.
Chem Commun (Camb). 2024 May 23;60(43):5638-5641. doi: 10.1039/d3cc05268k.
The addition of PBu to -substituted dianiline squaraine dyes leads to bench stable ylides. Exposure to a metal analyte in solution, results in P abstraction and rapid disruption of the ylide conjugation to promote reversion back to the squaraine dye giving an immediate turn-on colorimetric response. The stoichiometric sensitivity and accessibility of these chemodosimeters constitute effective organic dyes for trace transition metal detection.
将PBu添加到β-取代的二苯胺方酸菁染料中会生成在实验室条件下稳定的叶立德。在溶液中与金属分析物接触时，会发生P的夺取以及叶立德共轭的快速破坏，从而促使其逆转回方酸菁染料，产生即时开启的比色响应。这些化学计量型传感器的化学计量灵敏度和可及性使其成为用于痕量过渡金属检测的有效有机染料。
