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

作者：Jin, Feng; Zheng, Mei-Ling; Zhang, Mei-Lin; Zhao, Zhen-Sheng; Duan, Xuan-Ming^*

来源：RSC Advances, 2014, 4(63): 33206-33214.

DOI：10.1039/c4ra04779f

• CDSE/ZNS QUANTUM DOTS
• SEMICONDUCTOR NANOCRYSTALS
• SHELL NANOCRYSTALS
• SURFACE-CHEMISTRY
• PHASE-TRANSFER
• LUMINESCENCE
• DEPOSITION
• MEDIA
• PHOTOLUMINESCENCE
• NANOPARTICLES

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 CdSe@CdS QDs was produced for the buildup of the polymer/CdSe@CdS 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/CdSe@CdS 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.

• 出版日期2014
• 单位中国科学院重庆绿色智能技术研究院; 中国科学院大学; 中国科学院理化技术研究所