Chinese Journal of Applied Chemistry ›› 2018, Vol. 35 ›› Issue (1): 60-67.DOI: 10.11944/j.issn.1000-0518.2018.01.170048

• Full Papers • Previous Articles     Next Articles

Gold Nanopaticle Surface Energy Transfer and Its Application for Thiols Detection

WANG Cui,ZHANG Feiyun,LYU Rongwen(),ZHANG Shufen   

  1. State Key Laboratory of Fine Chemicals,Dalian University of Technology,Dalian,Liaoning 116024,China
  • Received:2017-02-28 Accepted:2017-05-31 Online:2018-01-03 Published:2018-01-03
  • Contact: LYU Rongwen

Abstract:

The fluorescence of Rhodamine B was quenched due to the surface energy transfer from Rhodamine B to silica supported gold nanoparticle surface. The Stern-Volmer quenching constant of the gold nanoparticles was 4.3×103 L/mol in this system. While, the fluorescence of Rhodamine B recovered after the addition of thiols due to the strong affinity of thiol to gold nanoparticles which obstructed the energy transfer between Rhodamine B and gold nanoparticles. As the unique response of Rhodamine B-Au-SiO2 system to thiols, it provides a simple analytical method for the detection of thiols. Moreover, Au-SiO2 becomes a recyclable probe because of the stabilization of silica support.

Key words: surface energy transfer, gold nanoparticles, silica, Rhodamine B, thiols