Quinoline a Versatile Molecular Probe for Zinc Sensor: A Mini-Review

Abstract

Fluorescent compounds have attracted a lot of attention because of their vast range of applications like visualization, microscopic techniques, low cost, real-time bio-imaging capabilities, convenience, and simplicity. Fluorescent imaging is the best suitable technology for in vivo monitoring of Zinc, an essential biological element for living organisms. Many fluorescent probes have been developed since the late 1980s, with some applications and issues. To avoid issues like interference from other transition metal ions, insolubility in water, and a difficult synthesis procedure, creating a highly selective Zn2+ sensing system has become an appealing challenge. Because of its good biocompatibility and unique photophysical properties, quinoline is a popular building component for fluorescent chemosensors for transition metals. This review focuses on a specific range of quinoline-based receptors used in Zn2+ ion sensing applications in various biological and environmental conditions.