Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (3): 583.

• Articles • Previous Articles     Next Articles

Optical Waveguide Based on Crystalline Organic Nanobelts of 1,3-Diphenyl-2-pyrazoline

CHEN Wei1,2, FU Hong-Bing1*, YAO Jian-Nian1   

  1. 1. State Key Laboratory for Structure Chemistry of Unstable and Stable Species, Beijng Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2009-05-26 Online:2010-03-10 Published:2010-03-10
  • Contact: FU Hong-Bing. E-mail: hongbing.fu@iccas.ac.cn
  • Supported by:

    国家自然科学基金(批准号: 90301010, 20373077和90606004)资助.

Abstract:

1D single-crystalline 1,3-diphenyl-2-pyrazoline(DP) nanobelts were prepared by the modified repercipication method with mixed poor solvents. The thickness of DP belt can be controlled at 200 nm with the width at 2 μm and the length at tens of microns. XRD and SAED indicate that the DP nanobelt grow along the [100] direction due to the π-π stacking of DP molecule. The steady-state absorption and fluorescence spectra indicate that DP nanobelts have unique optical properties which are different from the monomers and the bulk crystals. Furthermore, we find the belts are able to absorb the excitation light and propagate the PL emission towards the tips. The results presented in this paper provide useful information for the design and fabrication of optical waveguides from molecular materials.

Key words: 1,3-Diphenyl-2-pyrazoline; Nanobelt; J-aggregate; Optical waveguide; Nanophotonics

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