Recent progress and rational design of perovskite-based chemosensors: A review

In the past decades, perovskite-based materials have demonstrated excellent performances in a wide range of applications, including chemosensing. Owing to their unique structure-property relationship, chemosensing applications have become a point of interest that intrigued researchers from various backgrounds. Recently, several studies have reported the application of perovskite in chemosensing using various methods and analytes. However, the development for stable, sensitive, and selective chemosensors requires multiple approaches and considerations. In this review, the recent progress on perovskite-based chemosensor is summarized, with regards to different sensing mechanisms and target analytes subject to detection. Several aspects and fundamental factors affecting the chemosensor designs are also briefly discussed. In addition to the type of perovskites (including oxide, all inorganic halide, and hybrid organic-inorganic halide perovskites), perovskite design should also consider the structural dimensionality as an important factor that influenced the chemical and physical properties of the materials. We describe the upcoming challenges and limitations that could potentially be encountered in the development of perovskite chemosensors to provide some potential solutions and outlook. The future prospect of perovskite-based chemosensors is expected to rise due to continued interests and attention, which might pave the way for the advancement of innovative sensing technology.