Quantum dot based chemosensors: selective estimation of Cu2+ in Semi-aqueous medium

Abstract

Quantum dots are the semiconducting nanocrystals whose exicitons are restricted in all the three dimensions within a range of 2-10 nm. Due to the phenomenon called quantum confinement they have unique optical and photo physical properties which makes them useful as chemosensors. Since quantum dots provide a useful framework for the surface confinement of the receptors thereby resulting in changes in the receptor binding affinity. Therefore capturing this feature of the quantum dots different ligands are synthesized and then attached to the quantum dots. Finally studying the surface modification of the quantum dots helps us to make chemosensorsors.