| The examination of berberine excited state by laser flash photolysis. | |
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MedLine Citation:
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PMID: 19269887 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The property of the excited triplet state of berberine (BBR) was investigated by using time-resolved laser flash photolysis of 355 nm in acetonitrile. The transient absorption spectra of the excited triplet BBR were obtained in acetonitrile, which have an absorption maximum at 420 nm. And the ratio of excitation to ionization of BBR in acetonitrile solvent was calculated. The self-decay and self-quenching rate constants, and the absorption coefficient of (3)BBR* were investigated and the excited state quantum yield was determined. Furthermore utilizing the benzophenone (BEN) as a triplet sensitizer, and the beta-carotene (Car) as an excited energy transfer acceptor, the assignment of (3)BBR* was further confirmed and the related energy transfer rate constants were also determined. |
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Authors:
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Lingli Cheng; Mei Wang; Ping Zhao; Hui Zhu; Rongrong Zhu; Xiaoyu Sun; Side Yao; Shilong Wang |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-02-20 |
Journal Detail:
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Title: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Volume: 73 ISSN: 1386-1425 ISO Abbreviation: Spectrochim Acta A Mol Biomol Spectrosc Publication Date: 2009 Jul |
Date Detail:
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Created Date: 2009-05-01 Completed Date: 2009-06-25 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9602533 Medline TA: Spectrochim Acta A Mol Biomol Spectrosc Country: England |
Other Details:
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Languages: eng Pagination: 268-72 Citation Subset: IM |
Affiliation:
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School of Life Science and Technology, Tongji University, Siping Road 1239, Shanghai 200092, PR China. chenglingli_6@hotmail.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acetonitriles
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chemistry Berberine / chemistry* Humans Lasers* Molecular Structure Photolysis* |
| Chemical | |
Reg. No./Substance:
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0/Acetonitriles; 2086-83-1/Berberine; 75-05-8/acetonitrile |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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