Effect of gold nanoparticles on an aerosil surface on the fluorescence and Raman spectra of adsorbed tryptophan

被引:0
作者
A. M. Eremenko
N. P. Smirnova
I. P. Mukha
A. P. Naumenko
N. M. Belyi
S. Hayden
机构
[1] O. O. Chuiko Institute of Surface Chemistry,Laser Dynamics Laboratory, Department of Chemistry and Biochemistry
[2] National Academy of Sciences of Ukraine,undefined
[3] Taras Shevchenko National University of Kyiv,undefined
[4] Georgia Institute of Technology,undefined
来源
Theoretical and Experimental Chemistry | 2012年 / 48卷
关键词
gold nanoparticles; tryptophan; silica; fluorescence; enhancement of Raman scattering;
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学科分类号
摘要
We discuss the fluorescence and Raman spectra of the amino acid tryptophan (Trp) in the presence of gold nanoparticles in solution and on the surface of highly dispersed silica (aerosil) containing gold nanoparticles (Au-SiO2). The fluorescence of Trp is efficiently quenched in the presence of gold nanoparticles both in solution and on the SiO2 surface. The fluorescence and excitation spectra contain bands for molecular Trp and a charge transfer complex between Trp and the nanoparticles. In the Raman spectra of Trp with gold nanoparticles, considerably enhanced intense vibrations appear for the carboxyl and amino groups and also for the benzene and pyrrole rings. The effect of gold nanoparticles on the Raman spectra of Trp in a heterogeneous system is considerably weakened due to strong light scattering by the dispersed silica.
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页码:54 / 61
页数:7
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共 59 条
  • [1] Nabiev I(1988)Chan, R. R. Schrock, and R. E. Cohen Usp. Fiz. Nauk 154 459-496
  • [2] Efremov R(2010)undefined J. Nanopart. Res. 12 2843-88
  • [3] Chumanov G(2009)undefined J. Raman. Spectrosc. 40 150-undefined
  • [4] Iosin M(1983)undefined J. Raman Spectrosc. 14 375-undefined
  • [5] Baldeck P(1986)undefined Biofizika 31 183-undefined
  • [6] Astilean S(1993)undefined J. Chem. Phys. 98 9933-undefined
  • [7] Chuang Ch-H(1992)undefined Chem. Mater. 4 24-undefined
  • [8] Chen Y-T(2010)undefined Theor. Exp. Chem. 46 65-undefined
  • [9] Nabiev I(2010)undefined Adv. Nat. Sci.: Nanosci. Nanotechnol. 1 025009-undefined
  • [10] Savchenko V(2008)undefined J. Colloid Interface Sci. 323 247-undefined