MONOPOLE DIPOLE MODEL FOR SYMMETRICAL SOLVATOCHROMISM OF HEMICYANINE DYES

Authors
FROMHERZ P
Citation
P. Fromherz, MONOPOLE DIPOLE MODEL FOR SYMMETRICAL SOLVATOCHROMISM OF HEMICYANINE DYES, Journal of physical chemistry, 99(18), 1995, pp. 7188-7192
Citations number
20
Categorie Soggetti
Chemistry Physical
Journal title
Journal of physical chemistry → ACNP
ISSN journal
00223654
Volume
99
Issue
18
Year of publication
1995
Pages
7188 - 7192
Database
ISI
SICI code
0022-3654(1995)99:18<7188:MDMFSS>2.0.ZU;2-L
Abstract
The absorption spectrum of zwitterionic hemicyanine dyes is shifted to the blue and their fluorescence spectrum is shifted to the red by sol vents of high polarity. This symmetrical solvatochromism is rationaliz ed by a Born-Marcus-type theory of reversible charging for the positiv e chromophore alone which is described by an electrical point charge a nd an electrical point dipole in the center of a sphere.