Thermal-lensing measurements of singlet molecular oxygen (1Δg): quantum yields of formation and lifetimes
作者： Gerald Rossbroich , Norman A. Garcia , Silvia E. Braslavsky
DOI: 10.1016/0047-2670(85)85072-3
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摘要: Abstract Absolute quantum yields φΔ for singlet molecular oxygen (1O2(1Δg)) production were determined by time-resolved thermal-lensing (TL) using several sensitizers. The value is smaller than the yield φisc intersystem crossing tetraphenylporphyrin, zinc tetraphenylporphyrin and anthracene air-saturated benzene solutions. For anthracene, values = 0.78 ± 0.08 φΔ/ 0.16 measured this method. lifetimes of 1O2, TL in solvents at concentrations similar to those detected emission, are good agreement with literature data up about 100 μs. longer literature. Various possible reasons discrepancies discussed.
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sci-hub.se 参考文章(29)
A.J. Twarowski, D.S. Kliger, Multiphoton absorption spectra using thermal blooming: I. Theory Chemical Physics. ,vol. 20, pp. 253- 258 ,(1977) , 10.1016/0301-0104(77)85029-5
A.J. Twarowski, D.S. Kliger, Multiphoton absorption spectra using thermal blooming. II. Two-photon spectrum of benzene principles and practice of constraint programming. ,vol. 20, pp. 259- 264 ,(1977) , 10.1016/0301-0104(77)85030-1
Paul G. Seybold, Martin Gouterman, Porphyrins. XIII: Fluorescence spectra and quantum yields Journal of Molecular Spectroscopy. ,vol. 31, pp. 1- 13 ,(1969) , 10.1016/0022-2852(69)90335-X
Kiyokazu Fuke, Masayasu Ueda, Michiya Itoh, Direct observation of singlet oxygen by a thermal lensing technique Chemical Physics Letters. ,vol. 76, pp. 372- 374 ,(1980) , 10.1016/0009-2614(80)87044-8
Forrest R. Gilmore, Potential energy curves for N2, NO, O2 and corresponding ions Journal of Quantitative Spectroscopy and Radiative Transfer. ,vol. 5, pp. 369- IN3 ,(1965) , 10.1016/0022-4073(65)90072-5
C. Tanielian, L. Golder, C. Wolff, Production and quenching of singlet oxygen by the sensitizer in dye-sensitized photo-oxygenations Journal of Photochemistry. ,vol. 25, pp. 117- 125 ,(1984) , 10.1016/0047-2670(84)87016-1
A. C. Tam, H. Coufal, Photoacoustic generation and detection of 10‐ns acoustic pulses in solids Applied Physics Letters. ,vol. 42, pp. 33- 35 ,(1983) , 10.1063/1.93755
Bela P. Ruzsicska, Silvia E. Braslavsky, Kurt Schaffner, THE KINETICS OF THE EARLY STAGES OF THE PHYTOCHROME PHOTOTRANSFORMATION Pr Pfr. A COMPARATIVE STUDY OF SMALL (60 kDalton) and NATIVE (124 kDalton) PHYTOCHROMES FROM OAT Photochemistry and Photobiology. ,vol. 41, pp. 681- 688 ,(1985) , 10.1111/J.1751-1097.1985.TB03623.X
Jack Saltiel, Gary R. Marchand, Reza Dabestani, Jeanne M. Pecha, The quenching of anthracene triplets by ground-state anthracene Chemical Physics Letters. ,vol. 100, pp. 219- 222 ,(1983) , 10.1016/0009-2614(83)87279-0
Hussain Al-Ekabi, Kurt Schaffner, Silvia E. Braslavsky, Raymongd M. Ellul, Richard G. Weiss, Photoprocesses in biliverdin dimethyl ester in ethanol studied by laser-induced optoacoustic spectroscopy (lioas) Tetrahedron. ,vol. 39, pp. 1909- 1913 ,(1983) , 10.1016/S0040-4020(01)88704-4