Direct photochemical population of triplet diazirines: comparison of triplet energies by direct excitation and by energy transfer

Nicholas J. Turro; Yuan Cha; Ian R. Gould; Robert A. Moss

doi:10.1016/0047-2670(87)85029-3

Direct photochemical population of triplet diazirines: comparison of triplet energies by direct excitation and by energy transfer

Nicholas J. Turro, Yuan Cha, Ian R. Gould, Robert A. Moss

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Abstract

The S₀ → T₁ absorption spectra of diazirine, 3-phenyl-3-chlorodiazirine and two 4-substituted 3-aryl-3-chlorodiazirines have been observed in fluid solution at ambient temperatures. These measurements, which allow direct determination of the triplet energy E_T of the diazirines, are compared with those obtained by plots of senzitizer triplet quenching by diazirine and 3-phenyl-3-chlorodiazirine as a function of triplet sensitizer energy. The corresponding triplet energies are determined to be 73 ± 3 kcal mol^-1 and 63 ± 0.5 kcal mol^-1 respectively.

Original language	English (US)
Pages (from-to)	81-86
Number of pages	6
Journal	Journal of Photochemistry
Volume	37
Issue number	1
DOIs	https://doi.org/10.1016/0047-2670(87)85029-3
State	Published - Apr 1987
Externally published	Yes

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title = "Direct photochemical population of triplet diazirines: comparison of triplet energies by direct excitation and by energy transfer",

abstract = "The S0 → T1 absorption spectra of diazirine, 3-phenyl-3-chlorodiazirine and two 4-substituted 3-aryl-3-chlorodiazirines have been observed in fluid solution at ambient temperatures. These measurements, which allow direct determination of the triplet energy ET of the diazirines, are compared with those obtained by plots of senzitizer triplet quenching by diazirine and 3-phenyl-3-chlorodiazirine as a function of triplet sensitizer energy. The corresponding triplet energies are determined to be 73 ± 3 kcal mol-1 and 63 ± 0.5 kcal mol-1 respectively.",

author = "Turro, {Nicholas J.} and Yuan Cha and Gould, {Ian R.} and Moss, {Robert A.}",

year = "1987",

month = apr,

doi = "10.1016/0047-2670(87)85029-3",

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volume = "37",

pages = "81--86",

journal = "Journal of Photochemistry",

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T1 - Direct photochemical population of triplet diazirines

T2 - comparison of triplet energies by direct excitation and by energy transfer

AU - Turro, Nicholas J.

AU - Cha, Yuan

AU - Gould, Ian R.

AU - Moss, Robert A.

PY - 1987/4

Y1 - 1987/4

N2 - The S0 → T1 absorption spectra of diazirine, 3-phenyl-3-chlorodiazirine and two 4-substituted 3-aryl-3-chlorodiazirines have been observed in fluid solution at ambient temperatures. These measurements, which allow direct determination of the triplet energy ET of the diazirines, are compared with those obtained by plots of senzitizer triplet quenching by diazirine and 3-phenyl-3-chlorodiazirine as a function of triplet sensitizer energy. The corresponding triplet energies are determined to be 73 ± 3 kcal mol-1 and 63 ± 0.5 kcal mol-1 respectively.

AB - The S0 → T1 absorption spectra of diazirine, 3-phenyl-3-chlorodiazirine and two 4-substituted 3-aryl-3-chlorodiazirines have been observed in fluid solution at ambient temperatures. These measurements, which allow direct determination of the triplet energy ET of the diazirines, are compared with those obtained by plots of senzitizer triplet quenching by diazirine and 3-phenyl-3-chlorodiazirine as a function of triplet sensitizer energy. The corresponding triplet energies are determined to be 73 ± 3 kcal mol-1 and 63 ± 0.5 kcal mol-1 respectively.

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U2 - 10.1016/0047-2670(87)85029-3

DO - 10.1016/0047-2670(87)85029-3

M3 - Article

AN - SCOPUS:15844431987

SN - 0047-2670

VL - 37

SP - 81

EP - 86

JO - Journal of Photochemistry

JF - Journal of Photochemistry

IS - 1

ER -

Direct photochemical population of triplet diazirines: comparison of triplet energies by direct excitation and by energy transfer

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