Suppression of Quantum Dot Blinking in DTT-Doped Polymer Films

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• 作者：Josh Antelman ; Yuval Ebenstein ; Thomas Dertinger ; Xavier Michalet ; Shimon Weiss
• 刊名：Journal of Physical Chemistry C
• 出版年：2009
• 出版时间：July 9, 2009
• 年：2009
• 卷：113
• 期：27
• 页码：11541-11545
• 全文大小：250K
• 年卷期：v.113,no.27(July 9, 2009)
• ISSN：1932-7455

文摘

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 h 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.