Photoluminescence Decay Dynamics of Thiol‐Capped CdTe Quantum Dots in Living Cells under Microexcitation

Abstract

A shorter lifetime: The photoluminescence (PL) lifetime of intracellular thiol-capped CdTe quantum dots (QDs) varies greatly depending on the intracellular environment. The fluorescence image shows localization of the QDs (red) and lysosomes (green) in a human hepatocellular carcinoma (QGY) cell. The PL decay of the QDs inside (P2) the lysosomes shows a shorter PL lifetime than that outside (P1) the lyosomes.