Spectrally resolved photon echo spectroscopy of Zn(II), Co(II) and Ni(II)–octaethyl porphyrins
作者: S.K. Karthick KumarVivek TiwariTapas GoswamiDebabrata Goswami
作者单位: 1Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India
2Center for Laser Technology, Indian Institute of Technology, Kanpur 208016, India
刊名: Chemical Physics Letters, 2009, Vol.476 (1-3), pp.31-36
来源数据库: Elsevier Journal
DOI: 10.1016/j.cplett.2009.06.004
原始语种摘要: Abstract(#br)Spectrally resolved femtosecond three-pulse photon echo signal from some metal–octaethyl porphyrins (OEPs) like Zn(II)–OEP, Ni(II)–OEP, Co(II)–OEP is reported. Excited state dynamics is studied by time evolving photon echo spectra for different values of coherence and population relaxation times. Dependence on the spectrally resolved photon echo spectra on varying metal center is analyzed. For all these metallo-porphyrins, the electronic relaxation timescale is found to be limited by our laser pulsewidth of 50fs whereas the timescale for intramolecular vibrational relaxation, occurring within the Q 00 band was found to be over a picosecond for Co(II)–OEP and Ni(II)–OEP and within a picosecond for Zn(II)–OEP.
全文获取路径: Elsevier  (合作)
影响因子:2.145 (2012)

  • 公司 分光学
  • Interactive Interface 分光学
  • resolved 分辨
  • spectroscopy 分光学
  • Co 分光学
  • II 分光学
  • photon 光量子