Title

Essential-State Model for Polymethine Dyes: Symmetry Breaking and Optical Spectra

Authors

Authors

F. Terenziani; O. V. Przhonska; S. Webster; L. A. Padilha; Y. L. Slominsky; I. G. Davydenko; A. O. Gerasov; Y. P. Kovtun; M. P. Shandura; A. D. Kachkovski; D. J. Hagan; E. W. Van Stryland;A. Painelli

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

J. Phys. Chem. Lett.

Keywords

CONJUGATED POLYMERS; ABSORPTION; CHROMOPHORES; SOLVATOCHROMISM; DISTORTION; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, ; Multidisciplinary; Physics, Atomic, Molecular & Chemical

Abstract

Optical spectra of two families of symmetrical polymethine dyes bearing a positive and a negative charge are analyzed based on an essential state model recently developed for quadrupolar dyes. The model accounts for molecular vibrations and polar solvation and reproduces the anomalous evolution with solvent polarity of experimental absorption band shapes. Fluorescence and excited-state absorption spectra are well-described within the samle model which also quantitatively reproduces the recent observation of an intense two-photon absorption toward the (two-photon forbidden) lowest excited state. An extensive analysis of optical spectra demonstrates that the essential-state model developed for quadrupolar dyes also applies to polymethine dyes and that long polymethine dyes offer the first experimental example of class III quadrupolar chromophores.

Journal Title

Journal of Physical Chemistry Letters

Volume

1

Issue/Number

12

Publication Date

1-1-2010

Document Type

Article

DOI Link

http://dx.doi.org/10.1021/jz100430x

Language

English

First Page

1800

Last Page

1804

WOS Identifier

WOS:000278963500010

ISSN

1948-7185

Recommended Citation

"Essential-State Model for Polymethine Dyes: Symmetry Breaking and Optical Spectra" (2010). Faculty Bibliography 2010s. 860.
https://stars.library.ucf.edu/facultybib2010/860