Rhodol-based fluorescent probe for Au³⁺ detection and its application in bioimaging

Abstract

A propargyl–rhodol conjugate is a highly selective reaction-based fluorescent chemosensor for Au3+.

Selective Conversion of P=O‐Bridged Rhodamines into P=O‐Rhodols: Solvatochromic Near‐Infrared Fluorophores

“…[1][2][3][4] However,u nlike fluoresceins and rhodamines, the structures of rhodolsa re charge-neutral and unsymmetric. This characteristic featurei mparts rhodols with useful applications as fluorescent probes in the context of, for example, monitoring H + and metal ions, [5,6] biological thiols, [7] reactive oxygen or nitrogen species, [8] enzymatic activity, [9,10] and the cell membrane potential [11] in living cells.…”

Spray coating thin polymeric sensor films for Au3+

“…For example, an acidic pH can usually activate a nonfluorescent rhodamine spirolactam to be a highly fluorescent rhodamine derivative . Recently, rhodamine‐based sensors for cations and other analytes have received ever‐increasing interest in areas such as sensors for Pb 2+ , Cu 2+ , Hg 2+ , Fe 3+ , Cr 3+ , Au 3+ , NO, and OCl − . Our research expands expertise and knowledge in a rhodamine B derivative synthesis that can help to design and develop chemosensors based on rhodamine B derivative …”

Small-molecule fluorescent probes based on covalent assembly strategy for chemoselective bioimaging

“…Subsequently, many probes based on the cascade reaction between gold and alkynyl have been developed. [30][31][32][33][34][35][36][37][38][39][40][41] Their luminescence mechanisms are rich and diverse and have excellent performance, but they cannot be strictly classes as the covalent assembly mechanism. It is worth mentioning that two new colorimetric and uorescent probes were developed for the rapid and highly selective detection of Au 3+ (Fig.…”