title: Suppression of quantum dot blinking in DTT-doped polymer films.
abstract: In this report we evaluate the emission properties of single quantum dots embedded in a thin, thiol containing polymer film. We report the suppression of quantum dot blinking leading to a continuous photon flux from both organic and water soluble quantum dots and demonstrate their application as robust fluorescent point sources for ultrahigh resolution localization. In addition, we apply the polymer coating to cell samples immunostained with antibody conjugated QDs and show that fluorescence intensity from the polymer embedded cells shows no sign of degradation after 67 hours of continuous excitation. The reported thin polymer film coating may prove advantageous for immuno-cyto/histo-chemistry as well as for the fabrication of quantum dot containing devices requiring a reliable and stable photon source (including a single photon source) or stable charge characteristics while maintaining intimate contact between the quantum dot and the surrounding matrix.
authors.affiliation: Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095 USA.
authors.forename: Josh
authors.initials: J
authors.lastname: Antelman
authors.forename: Yuval
authors.initials: Y
authors.lastname: Ebenstein
authors.forename: Thomas
authors.initials: T
authors.lastname: Dertinger
authors.forename: Xavier
authors.initials: X
authors.lastname: Michalet
authors.forename: Shimon
authors.initials: S
authors.lastname: Weiss