title: Near-infrared fluorescence imaging with water-soluble lead salt quantum dots.
abstract: 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.
authors.affiliation: Department of Food Science, Department of Biomedical Engineering, School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA. bh73@cornell.edu
authors.forename: Byung-Ryool
authors.initials: BR
authors.lastname: Hyun
authors.forename: Hongyu
authors.initials: H
authors.lastname: Chen
authors.forename: Diego A
authors.initials: DA
authors.lastname: Rey
authors.forename: Frank W
authors.initials: FW
authors.lastname: Wise
authors.forename: Carl A
authors.initials: CA
authors.lastname: Batt