ICCAS OpenIR
Observation of the direct S-2 -> S-0 two-photo the hyperpolarizability of crystal violet (CV) scattering measurement
Rao, Y; Guo, XM; Tao, YS; Wang, HF
2004-09-30
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY A
ISSN1089-5639
Volume108Issue:39Pages:7977-7982
AbstractWe present the observation of the direct S-2 --> S-0 two-photon fluorescence (TPF) of crystal violet (CV) in methanol solution. The S-2 --> S-0 emission spectra of CV with excitation wavelengths from 730 to 900 nm are obtained for the first time. These spectra present three clear features: the broad S-2 --> S-0 TPF (370-480 nm) peaked at 408 nm, the hyper-Rayleigh scattering (HRS) at half of the excitation wavelength, and the hyper-Raman scattering with a Stokes shift about 1415 cm(-1) from the HRS wavelength, which can be attributed to the phenyl groups in the CV molecule. The two-photon excitation spectra measured from this S-2 --> S-0 emission is peaked at 374 +/- 2 nm. This TPF emission has the same depolarization ratio as the HRS signal, indicating a lifetime much shorter than the rotational relaxation lifetime. Subtraction of the TPF contribution leads to a hyperpolarizability value of CV at 800 nm, which is much smaller than that previously reported. Moreover, with the ability to directly measure HRS of the pure solvent, the hyperpolarizability value of CV also has much higher precision.
DOI10.1021/jp049326a
Indexed BySCI
Language英语
WOS IDWOS:000224071600028
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/81582
Collection中国科学院化学研究所
Corresponding AuthorWang, HF
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Mol React Dynam, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Rao, Y,Guo, XM,Tao, YS,et al. Observation of the direct S-2 -> S-0 two-photo the hyperpolarizability of crystal violet (CV) scattering measurement[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2004,108(39):7977-7982.
APA Rao, Y,Guo, XM,Tao, YS,&Wang, HF.(2004).Observation of the direct S-2 -> S-0 two-photo the hyperpolarizability of crystal violet (CV) scattering measurement.JOURNAL OF PHYSICAL CHEMISTRY A,108(39),7977-7982.
MLA Rao, Y,et al."Observation of the direct S-2 -> S-0 two-photo the hyperpolarizability of crystal violet (CV) scattering measurement".JOURNAL OF PHYSICAL CHEMISTRY A 108.39(2004):7977-7982.
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