Journal article

Fluorescence spectral properties of rhodamine 6G at the silica/water interface

Chen Z, Tang Y, Xie T, Chen Y, Li Y ...see all

Journal of Fluorescence, vol. 18, issue 1 (2008) pp. 93-100

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Abstract

In this work, total internal reflection synchronous fluorescence spectroscopy (TIRSF) is applied successfully to investigate rhodamine 6G (R6G) at the silica/water interface. In comparison with the bulk spectra, 5 nm red shift is observed in the interface spectra, which is mainly due to the limitation of freedom of rotational movement of R6G molecules at the interface. The increase of R6G concentration induces the self-quenching of adsorbate at the interface. The dependence of interfacial fluorescence on the acidity and ionic strength was studied. Both the acidity and ionic strength affect the adsorptive behaviors of R6G at the silica/water interface.

Author-supplied keywords

  • R6G
  • Silica/water interface
  • TIRSF

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Authors

  • Zhe Chen

  • Yao Ji Tang

  • Tang Tang Xie

  • Ying Chen

  • Yao Qun Li

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