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Evaluating the Solvent Stark Effect from Temperature-Dependent Solvatochromic Shifts of Anthracene.

ABSTRACT: The solvent Stark effect on the spectral shifts of anthracene is studied with temperature-dependent solvatochromic measurements. The Stark contribution ?vStark to the absorption shift ?vp in polar solvents is measured to be ?vStark =(53±35)?cm-1 , in reasonable agreement with dielectric continuum theory estimate of 28?cm-1 , whereas the major shift ?vp ?300?cm-1 presumably originates from the solute quadrupole. We pay attention to the accurate correction of ?vp for the nonpolar contribution that is crucial when the shifts are modest in magnitude.

SUBMITTER: Janz T

PROVIDER: S-EPMC7187296 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Evaluating the Solvent Stark Effect from Temperature-Dependent Solvatochromic Shifts of Anthracene.

Janz Timais T Güterbock Manuel M Müller Fabian F Quick Martin M Ioffe Ilya N IN Bischoff Florian A FA Kovalenko Sergey A SA

Chemphyschem : a European journal of chemical physics and physical chemistry 20200228 7

The solvent Stark effect on the spectral shifts of anthracene is studied with temperature-dependent solvatochromic measurements. The Stark contribution ΔvStark to the absorption shift Δvp in polar solvents is measured to be ΔvStark =(53±35) cm-1 , in reasonable agreement with dielectric continuum theory estimate of 28 cm-1 , whereas the major shift Δvp ∼300 cm-1 presumably originates from the solute quadrupole. We pay a ...[more]

PMID: 31990122

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