A Review on Luminescent Benzoselenadiazole Derivatives: Comparison with Benzothiadiazoles, Properties, Applications, and Trends

Abstract This review comprehensively analyzes key parameters that govern the use of luminescent benzoselenadiazole (BSD) derivatives. We examine the main factors affecting their photophysical properties, including structural variations, heavy atom effects and environmental conditions, and discuss their potential applications in bioimaging technology. Whenever possible, the properties were compared to those of 2,1,3‐benzoxadiazole and 2,1,3‐benzothiadiazole analogues. This review also highlights emerging trends and future directions in the research and development of BSD compounds, underscoring their significance and potential impact in advancing phototechnology and related fields. We also aim to offer valuable insight into the versatile nature of BSD derivatives and their expanding role in scientific and technological innovations.