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Determination of Astaxanthin and Canthaxanthin Triplet Properties in Different Polarities of the Solvent by Laser Flash Photolysis
Li Haixia(李海霞); Zhang Peng(张鹏); Song Xiyu(宋西玉); Wang Wenfeng(王文锋)
2011
Source PublicationCHINESE JOURNAL OF CHEMISTRY
ISSN1001-604X
Volume29Issue:7Pages:1535
AbstractTriplet-triplet extinction coefficients for astaxanthin (I) and canthaxanthin (II) in different deaerated polarity solutions of MeCN and benzene were evaluated by laser flash photolysis at 298 K in the spectral region from 350 to 650 nm by energy transfer method, employing 2-acetonaphthone as sensitizer. The triplet-triplet extinction coefficients in MeCN and benzene were different in terms of the carotenoid present. The maximum triplet-triplet extinction coefficient was 0.1-1.7x10(5) L.mol(-1).cm(-1) in different solvents. The rate constants of triplet decay were I: 1.25x10(10) L.mol(-1).s(-1), II: 1.12x10(10) L.mol(-1).s(-1) in MeCN; and I: 1.75x10(10) L.mol(-1).cm(-1), II: 3.27x10(10) L.mol(-1).s(-1) in benzene. The bimolecular rate constants of energy transfer from triplet excited 2-acetonaphthone to carotenoids were determined from the linear regression of the decay rate constant of 2-acetonaphthone triplet at varying carotenoid concentrations. The triplet lifetimes of (3)AST* and (3)CAN* in different solvents were also determined. The results indicated that triplet energy transfer was nearly diffusion-controlled.
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000293697500034
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/9484
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Li Haixia,Zhang Peng,Song Xiyu,et al. Determination of Astaxanthin and Canthaxanthin Triplet Properties in Different Polarities of the Solvent by Laser Flash Photolysis[J]. CHINESE JOURNAL OF CHEMISTRY,2011,29(7):1535.
APA Li Haixia,Zhang Peng,Song Xiyu,&Wang Wenfeng.(2011).Determination of Astaxanthin and Canthaxanthin Triplet Properties in Different Polarities of the Solvent by Laser Flash Photolysis.CHINESE JOURNAL OF CHEMISTRY,29(7),1535.
MLA Li Haixia,et al."Determination of Astaxanthin and Canthaxanthin Triplet Properties in Different Polarities of the Solvent by Laser Flash Photolysis".CHINESE JOURNAL OF CHEMISTRY 29.7(2011):1535.
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