光谱学与光谱分析 |
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Study on Spectral Properties of the Associated Particle of Berberine-PHLO and Its Analytical Application |
KANG Cai-yan1, JIANG Zhi-liang1*, MO Wei-ming2 |
1. Department of Resource and Environmental Science, Guangxi Normal University,Guilin 541004,China 2. Department of Chemistry, Guangxi Normal University, Guilin 541004, China |
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Abstract In neutral medium, berberine forms a red-violet association microparticle with PHLO which has an maxmimum absorption at 560 nm, Beer’s law is obeyed for berberine in the concentration range of 6.65×10-7-7.71×10-5mol·L-1. Spectral properties of the berberine-PHLO system were studied. In neutral medium, there are a maximum absorption peak at 520 nm and a fluorescence peak at 560 nm for PHLO. Berberine and PHLO combine into a hydrophobic berberine-PHLO association molecule by static gravitation. With stronger Van der Waals and hydrophobic forces among berberine-PHLO molecules, it forms association particle in red-violet which exhibits three resonance scattering peaks at 385, 470 and 586 nm,respectively. The fluorescence quenching at 560 nm is because the PHLO molecule in the body of the particle may not be excited by incident photons, so it does not emit fluorescence.
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Received: 2002-11-28
Accepted: 2003-03-28
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Corresponding Authors:
JIANG Zhi-liang
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Cite this article: |
KANG Cai-yan,JIANG Zhi-liang,MO Wei-ming. Study on Spectral Properties of the Associated Particle of Berberine-PHLO and Its Analytical Application [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(09): 1089-1092.
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URL: |
http://www.gpxygpfx.com/EN/Y2004/V24/I09/1089 |
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