光谱学与光谱分析 |
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Absorption Spectra Study of the Association Nanoparticle System of Berberine-[AuI4]- and Its Analytical Application |
WANG Li-sheng1,ZOU Jie-ming1,JIANG Zhi-liang2*,LIAO Zu-he2,PAN Hong-cheng2 |
1. Guilin Sanjin Pharmaceutical Company,Guilin 541004,China 2. Department of Resource and Environmental Science, Guangxi Normal University,Guilin 541004,China |
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Abstract In 0.008 mol·L-1 HCl medium, [AuCl4]- and I- combine to form [AuI4]-. [AuI4]- reacts with berberine(BB) to form (AuI4-BB) association molecule. The molecules aggregate automatically owing to strong hydrophobic and molecular forces. And (AuI4-BB)n association nanoparticles with orange-yellow color were observed. It exhibits a resonance scattering peak at 520 nm. The absorption peak for the nanoparticle system and the [AuI4]- is at 350 nm. However, the absorbance values for the nanoparticle system increased in the visible light region. Under the conditions chosen, the BB concentration in the range of 0.8×10-6 mol·L-1-20×10-6 mol·L-1 is linear to the A450 nm value. The results show that the formation of (AuI4-BB)n nanoparticles produces the resonance scattering effect and the orange-yellow color.
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Received: 2003-03-16
Accepted: 2003-08-06
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Corresponding Authors:
JIANG Zhi-liang
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Cite this article: |
WANG Li-sheng,ZOU Jie-ming,JIANG Zhi-liang, et al. Absorption Spectra Study of the Association Nanoparticle System of Berberine-[AuI4]- and Its Analytical Application[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(12): 1640-1642.
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URL: |
https://www.gpxygpfx.com/EN/Y2004/V24/I12/1640 |
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