Effect of Solvent on the Radiative Decay of Singlet Molecular-oxygen (a(1)delta(g))

Rodger D. Scurlock; Santiago Nonell; Silvia E. Braslavsky; Peter R. Ogilby

doi:10.1021/j100011a019

Effect of Solvent on the Radiative Decay of Singlet Molecular-oxygen (a(1)delta(g))

Rodger D. Scurlock, Santiago Nonell, Silvia E. Braslavsky, Peter R. Ogilby^*

^*Autor corresponent d’aquest treball

Departament de Química Analítica i Aplicada

Producció científica: Article en revista indexada › Article › Avaluat per experts

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Resum

Relative rate constants for O₂(a¹Δ_g) radiative deactivation (k_r) have been determined in 19 solvents. The data are consistent with earlier results that were obtained by using a different technique [Scurlock, R. D.; Ogilby, P. R. J. Phys. Chem. 1987, 91, 4599]. Of particular interest are the data in CS₂, which heretofore had yet to be corroborated. Current results indicate that k_r for CS₂ is indeed ∼2 times larger than k_r for benzene. A compilation of these results, along with those of other investigators, is provided. Average values of k_r derived from this compilation correlate well with both the solvent refractive index and solvent polarizability. The data correlate less well with the solvent ionization potential. Possible mechanisms consistent with these data are discussed.

Idioma original	Anglès
Pàgines (de-a)	3521-3526
Nombre de pàgines	6
Revista	Journal of Physical Chemistry
Volum	99
Número	11
DOIs	https://doi.org/10.1021/j100011a019
Estat de la publicació	Publicada - 16 de març 1995

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10.1021/j100011a019

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title = "Effect of Solvent on the Radiative Decay of Singlet Molecular-oxygen (a(1)delta(g))",

abstract = "Relative rate constants for O2(a1Δg) radiative deactivation (kr) have been determined in 19 solvents. The data are consistent with earlier results that were obtained by using a different technique [Scurlock, R. D.; Ogilby, P. R. J. Phys. Chem. 1987, 91, 4599]. Of particular interest are the data in CS2, which heretofore had yet to be corroborated. Current results indicate that kr for CS2 is indeed ∼2 times larger than kr for benzene. A compilation of these results, along with those of other investigators, is provided. Average values of kr derived from this compilation correlate well with both the solvent refractive index and solvent polarizability. The data correlate less well with the solvent ionization potential. Possible mechanisms consistent with these data are discussed.",

keywords = "Phosphorescence quantum yield, Rate-constant, Photophysical properties, 1-delta-g o2, Infrared luminescence, State, C60, Deactivation, Transition, Porphyrins",

author = "Scurlock, {Rodger D.} and Santiago Nonell and Braslavsky, {Silvia E.} and Ogilby, {Peter R.}",

note = "{\textcopyright} American Chemical Society",

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doi = "10.1021/j100011a019",

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T1 - Effect of Solvent on the Radiative Decay of Singlet Molecular-oxygen (a(1)delta(g))

AU - Scurlock, Rodger D.

AU - Nonell, Santiago

AU - Braslavsky, Silvia E.

AU - Ogilby, Peter R.

N1 - © American Chemical Society

PY - 1995/3/16

Y1 - 1995/3/16

N2 - Relative rate constants for O2(a1Δg) radiative deactivation (kr) have been determined in 19 solvents. The data are consistent with earlier results that were obtained by using a different technique [Scurlock, R. D.; Ogilby, P. R. J. Phys. Chem. 1987, 91, 4599]. Of particular interest are the data in CS2, which heretofore had yet to be corroborated. Current results indicate that kr for CS2 is indeed ∼2 times larger than kr for benzene. A compilation of these results, along with those of other investigators, is provided. Average values of kr derived from this compilation correlate well with both the solvent refractive index and solvent polarizability. The data correlate less well with the solvent ionization potential. Possible mechanisms consistent with these data are discussed.

AB - Relative rate constants for O2(a1Δg) radiative deactivation (kr) have been determined in 19 solvents. The data are consistent with earlier results that were obtained by using a different technique [Scurlock, R. D.; Ogilby, P. R. J. Phys. Chem. 1987, 91, 4599]. Of particular interest are the data in CS2, which heretofore had yet to be corroborated. Current results indicate that kr for CS2 is indeed ∼2 times larger than kr for benzene. A compilation of these results, along with those of other investigators, is provided. Average values of kr derived from this compilation correlate well with both the solvent refractive index and solvent polarizability. The data correlate less well with the solvent ionization potential. Possible mechanisms consistent with these data are discussed.

KW - Phosphorescence quantum yield

KW - Rate-constant

KW - Photophysical properties

KW - 1-delta-g o2

KW - Infrared luminescence

KW - State

KW - C60

KW - Deactivation

KW - Transition

KW - Porphyrins

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Effect of Solvent on the Radiative Decay of Singlet Molecular-oxygen (a(1)delta(g))

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