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The Journal of Chemical Physics
Volumn 97, Issue 7, 1992, Pages 5239-5242
Vibrational energy redistribution and relaxation in the photoisomerization of cis-stilbene
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Indexed keywords

EID: 0001396434     PISSN: 00219606     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.463822     Document Type: Article
Times cited : (62)
References (23)
  • 18
    • 84955425438 scopus 로고    scopus 로고
    • The equilibrium ([inline formula]) difference spectrum is estimated using spectra of cis-stilbene and trans-stilbene obtained in hexane on a standard UV-visible spectrophotometer and the spectrum of DHP digitized from Fig. 4 of Ref. 19. The change in absorbance is given by [inline formula] where the [inline formula]’s are the quantum yields for production of trans-stilbene and DHP, respectively, and the [inline formula]’s are the molar extinction coefficients for trans, DHP, and cis as a function of wavelength. The quantum yields are [inline formula] and [inline formula] (Ref. 20). For a quantitative analysis of the early time spectra the effect of “hot"” vibrational distributions must be considered in the trans and DHP photoproducts and in the molecules which return to the ground state in the cis configuration. Because the cis spectrum is very broad, structureless, and weaker than the trans spectrum, and because DHP accounts for only 10% of the molecules, the difference spectrum is dominated by the trans contribution. This is discussed in much greater detail in Ref. 11
  • 21
    • 84955429854 scopus 로고    scopus 로고
    • The calculations were performed using harmonic potentials and the displacements deduced for the 11 or 12 Franck-Condon active modes of trans- and cis-stilbene by using resonance Raman spectroscopy (Refs. 12 and 13). As we have no information on the parameters necessary for estimating the hot DHP spectrum, this contribution has been assumed to be room temperature in the calculations shown in Fig. 4. The specific features of the calculation are discussed in greater detail in Ref. 11

* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.