메뉴 건너뛰기




Volumn 112, Issue 10, 2008, Pages 3048-3057

Exploring 12′-apo-β-carotenoic-12′-acid as an ultrafast polarity probe for ionic liquids

Author keywords

[No Author keywords available]

Indexed keywords

ALKYLATION; FLUIDS; IONIZATION OF LIQUIDS; IONS; LIQUIDS;

EID: 42449089819     PISSN: 15206106     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp710766z     Document Type: Article
Times cited : (20)

References (93)
  • 56
    • 84906388450 scopus 로고    scopus 로고
    • Ionic Liquids Database (IL Thermo); IUPAC and NIST, 2006.
    • Ionic Liquids Database (IL Thermo); IUPAC and NIST, 2006.
  • 58
    • 46949092544 scopus 로고    scopus 로고
    • Product list including physicochemical data
    • Solvent Innovation
    • "Product list including physicochemical data," Solvent Innovation, 2005.
    • (2005)
  • 81
    • 84906359975 scopus 로고    scopus 로고
    • The order of magnitude of the apparent activation energy arising from the temperature-dependent increase of the thermally averaged IC rate constants kIC(T) can be estimated for well-known systems. Here we take the nonradiative decay of azulene from its S2 state as an example. Employing reasonable Whitten-Rabinovitch densities of states ρ(E) for S 2 azulene (for calculating the thermal vibrational Boltzmann distribution) and the well-known kIC(E, as measured, e.g, in molecular beam studies (for details, see the recent compilation of data on the photophysics and intramolecular dynamics of azulene in Hold et al. J. Chem. Phys. 2003, 119, 11192, one indeed observes an Arrhenius-type behavior for kIC(T) in the range 298-348 K, and the extracted apparent activation energy is ca. 4 kJ mol-1, which is similar to the experimental Ea values found for the decay of the Si/ICT state of 12′
    • a values found for the decay of the Si/ICT state of 12′CA. We are therefore confident that the observed increase of the IC rate constant with temperature in ILs and organic solvents is mainly due to the intrinsic energy dependence of the nonradiative transition.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.