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

The solvent Stark effect on the spectral shifts of anthracene is studied with temperature‐dependent solvatochromic measurements. The Stark contribution Δv (Stark) to the absorption shift Δv (p) in polar solvents is measured to be Δv (Stark)=(53±35) cm(−1), in reasonable agreement with dielectric con...

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Detalles Bibliográficos
Autores principales: Janz, Timais, Güterbock, Manuel, Müller, Fabian, Quick, Martin, Ioffe, Ilya N., Bischoff, Florian A., Kovalenko, Sergey A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Articles
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7187296/
https://www.ncbi.nlm.nih.gov/pubmed/31990122
http://dx.doi.org/10.1002/cphc.202000010
Descripción
Sumario:The solvent Stark effect on the spectral shifts of anthracene is studied with temperature‐dependent solvatochromic measurements. The Stark contribution Δv (Stark) to the absorption shift Δv (p) in polar solvents is measured to be Δv (Stark)=(53±35) cm(−1), in reasonable agreement with dielectric continuum theory estimate of 28 cm(−1), whereas the major shift Δv (p)∼300 cm(−1) presumably originates from the solute quadrupole. We pay attention to the accurate correction of Δv (p) for the nonpolar contribution that is crucial when the shifts are modest in magnitude.

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