Recent advancement in development of fluorescein based molecular probes for analytes sensing

•Fluorescein molecules are extensively utilized to develop fluorescent probes for different analytes due to their unique and excellent photophysical properties and spirocyclic structural feature.•This article overview different strategies for the development of fluorescent sensors, operating through the modification of skeletons of fluorescein.•This review article summarised synthetic methodology, sensing mechanism and unique features of fluorescein based fluorescent probes developed over last decade.