Near-infrared fluorescence imaging with water-soluble lead salt quantum dots.
A simple procedure for transferring PbS and PbSe quantum dots into water is presented, along with characterization of the resulting water-soluble quantum dots. The external surface of the water-soluble quantum dots include carboxylic groups, which will allow target-specific labeling of cells. As a first example, near-infrared fluorescence imaging of human colon cancer cells is demonstrated using these water-soluble near-infrared fluorophores.
Hyun
Byung-Ryool
BR
Department of Food Science, Department of Biomedical Engineering, School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA. bh73@cornell.edu
Chen
Hongyu
H
Rey
Diego A
DA
Wise
Frank W
FW
Batt
Carl A
CA