Spectroscopic Characteristic of the Gold Nanoparticle-fluorescein System

Abstract

Abstract:

There are an absorption peak at 485 nm and a synchronous fluorescence peak at 510 nm for fluorescein in the medium of 3.4×10^-3 mol/L tri-sodium citrate. The gold nanoparticle system exhibits a characterization resonance scattering peak at 580 nm. In the coexisting system of gold nanoparticle and fluorescein, there are a synchronous fluorescence peak at 510 nm and a resonance scattering peak at 580 nm. It has been found that the fluorescence peak may be quenched by gold nanoparticle. When the concentration of fluorescein is higher, the A_470nm nm affects the I_470nm of gold nanoparticle. The I_470nm decreases exponentially with the concentration of fluorescein.

Key words: Gold nanoparticle, Fluorescein, Resonance scattering, Fluorescence quenching mechanism

CLC Number:

O657

TrendMD:

JIANG Zhi-Liang, LIU Shao-Pu, WANG Li-Sheng, QIN Ai-Miao, LIANG Hong . Spectroscopic Characteristic of the Gold Nanoparticle-fluorescein System[J]. Chem. J. Chinese Universities, 2003, 24(7): 1201.

References

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