ICCAS OpenIR
Investigation on photoexcited dynamics of IR-140 dye in ethanol by femtosecond supercontinuum-probing technique
Wang, DL; Jiang, HB; Yang, H; Liu, CL; Gong, QH; Xiang, JF; Xu, GZ
2002-03-01
Source PublicationJOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
ISSN1464-4258
Volume4Issue:2Pages:155-159
AbstractTransient absorption and emission spectra of IR-140 dye (5,5'-dichloro-11-diphenylamine-3,3'-diethyl- 10,12-ethylene-thiatricarbocyanine-perchlorate) in ethanol have been investigated by using the pump supercontinuum-probing technique of 130 fs time resolution. Excited at a wavelength of 807 nm, two peaks at 820 and 840 nm in the emission spectra were observed. The decay of stimulated emission (SE) at 840 nm can be fitted by a dual-exponential function. Meanwhile, a new transient absorption band ranging from 500 to 650 nm was observed and attributed to the transition between the excited singlet states. Its relaxation process could also be fitted by a dual -exponential function. Both relaxation processes of SE and excited-state absorption were probing wavelength-dependent and included a fast relaxation with a decay time of about several picoseconds and a slow relaxation with decay time longer than 0.1 ns. The prime energy structure was proposed according to the relaxation process and transient spectra of IR-140.
KeywordUltrafast Process Laser Materials Time-resolved Optical Spectroscopies
Indexed BySCI
Language英语
WOS IDWOS:000174908300007
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78612
Collection中国科学院化学研究所
Corresponding AuthorGong, QH
Affiliation1.Beijing Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
2.Beijing Univ, Dept Phys, Beijing 100871, Peoples R China
3.Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100101, Peoples R China
4.Chinese Acad Sci, Inst Chem, State Key Lab Struct Chem Stable & Unstable Speci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Wang, DL,Jiang, HB,Yang, H,et al. Investigation on photoexcited dynamics of IR-140 dye in ethanol by femtosecond supercontinuum-probing technique[J]. JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS,2002,4(2):155-159.
APA Wang, DL.,Jiang, HB.,Yang, H.,Liu, CL.,Gong, QH.,...&Xu, GZ.(2002).Investigation on photoexcited dynamics of IR-140 dye in ethanol by femtosecond supercontinuum-probing technique.JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS,4(2),155-159.
MLA Wang, DL,et al."Investigation on photoexcited dynamics of IR-140 dye in ethanol by femtosecond supercontinuum-probing technique".JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS 4.2(2002):155-159.
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