A facile layer-by-layer assembly method for the fabrication of fluorescent polymer/quantum dot nanocomposite thin films

We demonstrated an efficient and robust approach for the preparation of polymer/quantum dot (QD) nanocomposite thin films in nonpolar media. By employing photopolymerization based on the thiol-ene reaction, thiol-containing polymer with affinity groups for CdSedS QDs was produced for the buildup of...

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Bibliographic Details
Published inRSC advances Vol. 4; no. 63; pp. 33206 - 33214
Main Authors Jin, Feng, Zheng, Mei-Ling, Zhang, Mei-Lin, Zhao, Zhen-Sheng, Duan, Xuan-Ming
Format Journal Article
LanguageEnglish
Published 01.01.2014
Subjects
Assembly
Construction
Fluorescence
Nanocomposites
Quantum dots
Spectrometry
Spectroscopy
Thin films
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Summary:We demonstrated an efficient and robust approach for the preparation of polymer/quantum dot (QD) nanocomposite thin films in nonpolar media. By employing photopolymerization based on the thiol-ene reaction, thiol-containing polymer with affinity groups for CdSedS QDs was produced for the buildup of the polymer/CdSedS QD nanocomposite thin films utilizing layer-by-layer assembly. The polymer/QD nanocomposite films were characterized by SEM, TEM, fluorescence spectrometry, thermogravimetric analysis, confocal laser scanning microscopy and time-resolved fluorescence spectrometry. The resulting free-standing polymer/QD nanocomposite films exhibit high fluorescent intensity, moderate transparency, good photostability and thermal stability. We further applied photolithographic patterning in conjunction with an LBL assembly method to fabricate a polymer/CdSedS QD nanocomposite pattern on a flexible substrate. This versatile and facile method provides prospects for the design of novel photonic devices based on the polymer/QD nanocomposite thin films.
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ISSN:2046-2069
2046-2069
DOI:10.1039/C4RA04779F