Premium
Evaluating the Solvent Stark Effect from Temperature‐Dependent Solvatochromic Shifts of Anthracene
Author(s) -
Janz Timais,
Güterbock Manuel,
Müller Fabian,
Quick Martin,
Ioffe Ilya N.,
Bischoff Florian A.,
Kovalenko Sergey A.
Publication year - 2020
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.202000010
Subject(s) - solvatochromism , stark effect , chemistry , anthracene , quadrupole , solvent , solvent effects , polar , dielectric , absorption (acoustics) , spectral line , photochemistry , atomic physics , materials science , organic chemistry , physics , optoelectronics , astronomy , composite material
The solvent Stark effect on the spectral shifts of anthracene is studied with temperature‐dependent solvatochromic measurements. The Stark contribution Δ v Stark to the absorption shift Δ v p in polar solvents is measured to be Δ v Stark =(53±35) cm −1 , in reasonable agreement with dielectric continuum theory estimate of 28 cm −1 , whereas the major shift Δ v p ∼300 cm −1 presumably originates from the solute quadrupole. We pay attention to the accurate correction of Δ v p for the nonpolar contribution that is crucial when the shifts are modest in magnitude.