In Situ Ni(II) Complexation Induced Deprotonation of Bis-Thiourea-Based Tweezers in DMSO-Water Medium: An Approach toward Recognition of Fluoride Ions in Water with Organic Probe Molecules.

Recognition of fluoride in water through the fluoride-induced Brönsted acid-base deprotonation reaction of an organic probe molecule is still a challenging task owing to the lower basicity of fluoride ions and the instability of the conjugate base of the probe molecules in aqueous medium. Herein, we report a complementary strategy in which the conjugate base of the studied bis-thiourea molecule in dimethyl sulfoxide (DMSO) medium is simultaneously stabilized through chelation of the Ni(II) ion, which eventually facilitates the recognition of the fluoride ion in water samples. The recognition methodology is validated colorimetrically and electrochemically, and finally, the applicability of the approach is explored with water samples collected from fluoride-affected areas.

-Thiocresol Functionalized Cesium Lead Bromide (PTC@CsPbBr): A Fluorometric Sensing Probe for the Detection of Cholesterol.

Inorganic halide-based perovskites (e.g., cesium lead bromide) are tremendously useful semiconducting materials due to their unique optoelectronic properties.

CsPbBr perovskites: A dual fluorescence sensor to distinguish ethanol from methanol.

In recent years, lead halide perovskites have emerged as a promising material with defect tolerance, thermally stable, and optoelectronic properties. However, the instability is the major factor which hinder their potential applications in various fields. This work demonstrates the chemical stability of Cesium Lead Bromide (CsPbBr) under different passivation condition with an objective to develop alcohol sensor.