The development of synthetic receptor for cation and anion recognition have attracted considerable attention in recent years within the field of supramolecular chemistry due to the fact that a large number of biological processes involve molecular recognition.The leading issue in the design of any active chemosensor is the connotation of a selective molecular recognition event with a physical signal highly sensitive to its occurrence. Fluorescence technique is commonly considered superior than other electrochemical techniques because of its low detection limits for trace chemical detection, selectivity, response time and in situ monitoring ability. Fluorescent chemosensors capable of selectively recognizing cations have potential analytical applications in many different fields, including chemistry, biology, and medicine. Calix 4]arene based chemosensors have enthralled a great deal of contemplation due to their capacity to visually sense analytes with high sensitivity as well as fast response time.