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学科主题: 物理化学
题名: Luminescence properties and kinetic analysis of singlet oxygen from fullerene solutions
作者: Wang, Junhui1;  Leng, Jing1;  Yang, Heping1;  Sha, Guohe1;  Zhang, Cunhao1
通讯作者: 冷静
关键词: Singlet oxygen ;  Fullerene ;  Photoluminescence ;  Lifetime ;  C60O
刊名: JOURNAL OF LUMINESCENCE
发表日期: 2014-05-01
DOI: 10.1016/j.jlumin.2014.01.025
卷: 149, 页:267-271
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: 11
项目归属: 11T5
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Optics
资助者: 1,1
研究领域[WOS]: Optics
英文摘要: A systematic investigation on singlet oxygen (O-2(a(1)Delta)) photoluminescence (PL) from fullerene (C-60) solutions by using a pulsed Nd: YAG laser at 532 nm was reported. The results show that the O-2(a(1)Delta) PL intensity first increases linearly, then declines fast, and eventually tends to level off with the increase of pump energy, while decreases monotonically with increasing irradiation time. The latter can evidently be attributed to the formation of photoinduced O-2(a(1)Delta) quenchers, which was directly confirmed by the remarkable decrease of O-2(a(1)Delta) lifetime with increasing irradiation time. Also, we further demonstrated that the O-2(a(1)Delta) quencher should be C60O via electrospray ionization-mass spectrometry (ESI-MS) and a kinetic analysis on the formation rate of the O-2(a(1)Delta) quenchers in irradiated C-60 solutions. On this basis, the above pump-energy dependence of O-2(a(1)Delta) PL was also rationalized kinetically. With the increase of pump energy, the initial linear increase is exactly attributable to the linear increase of O-2(a(1)Delta) concentration, while the following drop should result from the fast formation of photoinduced O-2(a(1)Delta) quenchers and the eventual smooth variation is evidently related to the inverse saturated absorption effect of C-60. (C) 2014 Elsevier B.V. All rights reserved.
关键词[WOS]: PHOTOPHYSICAL PROPERTIES ;  BIMOLECULAR PROCESSES ;  NONLINEAR ABSORPTION ;  QUANTUM YIELDS ;  C-60 ;  GENERATION ;  C-70 ;  SYSTEMS ;  EPOXIDE ;  STATE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000333788900043
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119699
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China

Recommended Citation:
Wang, Junhui,Leng, Jing,Yang, Heping,et al. Luminescence properties and kinetic analysis of singlet oxygen from fullerene solutions[J]. JOURNAL OF LUMINESCENCE,2014,149:267-271.
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