Imaging Science and Photochemistry ›› 2014, Vol. 32 ›› Issue (3): 267-273.DOI: 10.7517/j.issn.1674-0475.2014.03.267

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Local Surface Plasmonic Resonance Enhancement of Gold Nanorod/Polymer Nanocomposites in Two-photon Photopolymerization

ZHANG Jinlong1,3, ZHENG Meiling1, JIN Feng1, Dong Xianzi1, CHEN Shu1,3, ZHAO Zhensheng1, DUAN Xuanming1,2   

  1. 1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China;
    2. Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P. R. China;
    3. University of Chinese Academy of Sciences, Beijing 100049, P. R. China
  • Received:2013-12-18 Revised:2014-02-25 Online:2014-05-15 Published:2014-05-15

Abstract:

In this paper, we study the local surface plasmon resonance effect of gold nanorods in the two-photon polymerization process. As excitation light matches gold nanorods surface plasma resonance wavelength, the surface of gold nanorods has strong local electromagnetic fields which can cause two-photon polymerization. By employing a femtosecond laser, whose wavelength is the same as the gold nanorods longitudinal absorption peak wavelength in the photoresist, polymer/metal nanocomposites have been prepared. Transmission electron microscope (TEM) images show that the surface of the gold nanorods covers a polymer layer of 5 nm thickness when the femtosecond laser power is 0.6 W, spot diameter is 1.6 cm, irradiation time is 0.3 s. This study would provide a facile method for the preparation of polymer/metal nanoparticles, which might be applied in the emerging field, such as photonics and nanosensors.

Key words: gold nanorods, femtosecond laser, two-photon polymerization, metal/polymer nanocomposites