Stark effects in gas-phase electronic spectra. Dipole moment of aniline in its excited S1 state

T. M. Korter; D. R. Borst; C. J. Butler; D. W. Pratt

doi:10.1021/ja0021262

Stark effects in gas-phase electronic spectra. Dipole moment of aniline in its excited S₁ state

T. M. Korter, D. R. Borst, C. J. Butler, D. W. Pratt

Research output: Contribution to journal › Article › peer-review

52 Scopus citations

Abstract

Measurements of the Stark effect on the rotationally resolved S₁←S₀ fluorescence excitation spectrum of aniline are reported, providing quantitative information about the degree of charge transfer in the electronic transition. We find that μ_a(S₁ = 2.801 ± 0.007 D, a value that is ∼150% larger than the ground state, μ_a(S₀) = 1.129 ± 0.005 D. The enhanced value of the dipole moment in the S₁ state is attributed to more efficient electron donation by the quasi-planar amino group to the aromatic ring.

Original language	English (US)
Pages (from-to)	96-99
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	123
Issue number	1
DOIs	https://doi.org/10.1021/ja0021262
State	Published - Jan 10 2001
Externally published	Yes

ASJC Scopus subject areas

Catalysis
General Chemistry
Biochemistry
Colloid and Surface Chemistry

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10.1021/ja0021262

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abstract = "Measurements of the Stark effect on the rotationally resolved S1←S0 fluorescence excitation spectrum of aniline are reported, providing quantitative information about the degree of charge transfer in the electronic transition. We find that μa(S1 = 2.801 ± 0.007 D, a value that is ∼150% larger than the ground state, μa(S0) = 1.129 ± 0.005 D. The enhanced value of the dipole moment in the S1 state is attributed to more efficient electron donation by the quasi-planar amino group to the aromatic ring.",

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AU - Korter, T. M.

AU - Borst, D. R.

AU - Butler, C. J.

AU - Pratt, D. W.

PY - 2001/1/10

Y1 - 2001/1/10

N2 - Measurements of the Stark effect on the rotationally resolved S1←S0 fluorescence excitation spectrum of aniline are reported, providing quantitative information about the degree of charge transfer in the electronic transition. We find that μa(S1 = 2.801 ± 0.007 D, a value that is ∼150% larger than the ground state, μa(S0) = 1.129 ± 0.005 D. The enhanced value of the dipole moment in the S1 state is attributed to more efficient electron donation by the quasi-planar amino group to the aromatic ring.

AB - Measurements of the Stark effect on the rotationally resolved S1←S0 fluorescence excitation spectrum of aniline are reported, providing quantitative information about the degree of charge transfer in the electronic transition. We find that μa(S1 = 2.801 ± 0.007 D, a value that is ∼150% larger than the ground state, μa(S0) = 1.129 ± 0.005 D. The enhanced value of the dipole moment in the S1 state is attributed to more efficient electron donation by the quasi-planar amino group to the aromatic ring.

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Stark effects in gas-phase electronic spectra. Dipole moment of aniline in its excited S₁ state

Abstract

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