A Simple Fluorescence Turn‐on Probe for the Detection of Hg²⁺ Ion in Aqueous Solution and Soil With AIE and ICT Mechanisms

Abstract

A novel fluorescent probe TSA for the high selectivity of mercury (Hg2+) ion has been explored, which was obtained by two‐step synthesis. Probe TSA was barely emissive in HEPES buffer. In the presence of Hg2+ ion, the dithioacetal unit in probe TSA was hydrolyzed to be formyl group, consequently causing the intense sky‐blue emission via aggregation‐induced emission and intramolecular charge transfer mechanisms. Moreover, probe TSA was potential to detect Hg2+ ion in dyeing wastewater and clay soil.

Recent advances in fluorescent materials for mercury(ii) ion detection

“…Naturally, they have been widely used in detecting Hg 2+ ions over the past dozen years. [89][90][91][92][93][94][95][96][97][98][99][100][101] Some molecules with thymine units can coordinate with Hg 2+ ions, resulting in the AIE phenomenon. [102][103][104] Zhang et al 105 synthesized a novel AIE phosphor with a triphenylamine-triazine motif and a thymine unit.…”

Colorimetric Fluorescence of a 2,4,5‐Triaryl Imidazole‐Based Sensor for the Selective Detection of Iron

“…[13][14][15] Molecular fluorescent probe is generally composed of three parts: recognition groups, fluorophores and linkers, [16] which mainly use the probe recognition group to interact with metal ions to change the structure of the fluorescent probe, thereby causing changes in fluorescence properties and realizing the analysis of the detected object. [17][18][19][20][21] Fluorescent probe has been used as a new detection method in recent years for detecting of various metal ions due to their advantages, which include simple operation, good selectivity, low cost, real-time and in-situ detection of molecules and ions in the environment and biological processes. [22,23] Triphenylamine and its derivatives are widely used in the fields of fluorescent materials due to their high triplet energy, good hole transport, strong electron donating properties, as well as strong fluorescence properties and light stability.…”

“…Therefore, the development of detection methods for these ions is of great significance for studying their function in the human body [13–15] . Molecular fluorescent probe is generally composed of three parts: recognition groups, fluorophores and linkers, [16] which mainly use the probe recognition group to interact with metal ions to change the structure of the fluorescent probe, thereby causing changes in fluorescence properties and realizing the analysis of the detected object [17–21] . Fluorescent probe has been used as a new detection method in recent years for detecting of various metal ions due to their advantages, which include simple operation, good selectivity, low cost, real‐time and in‐situ detection of molecules and ions in the environment and biological processes [22,23]…”

On‐Site Detection for Hazardous Materials in Chemical Accidents

“…Developments of novel synthetic molecular units for efficient detection of hazardous materials have been paid much attention to chemistry community. 1 Spectroscopic chemosensors have been reported for effective monitoring of heavy metals, [2][3][4] inorganic pollutants, 5 warfare agents, 6 pesticides, 7 and hydrogen peroxide (H 2 O 2 ). 8 Chemical accidents can be considered an inevitable consequence of rapid worldwide industrialization.…”