Title

Excited-state absorption and anisotropy properties of two-photon absorbing fluorene derivatives

Authors

Authors

K. D. Belfield; M. V. Bondar; I. Cohanoschi; F. E. Hernandez; O. D. Kachkovsky; O. V. Przhonska;S. Yao

Comments

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

Abbreviated Journal Title

Appl. Optics

Keywords

TRANSITION DIPOLE-MOMENTS; OPTICAL-PROPERTIES; DYES; FLUORESCENCE; ENHANCEMENT; ORIENTATION; POLYMETHINE; EXCITATION; MOLECULE; STORAGE; Optics

Abstract

The electronic structure of fluorene denvatives N-(7-benzotluazol-2-yl-9,9-bis-decyl-9H-fluoren-2-yl)-acetamide (1); 9,9-didecyl-2,7-bis-(N,N-benzotbiazoyl)fluorene (2); 4,4'-{[9,9-bis(ethyl)-9H-fluorene-2,7-diyl]di-2,1-ethenediyl}bis(N,N-diphenyl)benzeneamine (3); and 4,4',4 ''{[9,9-bis(ethyl)-9H-fluorene-2,4,7-triyl]tri-2,1-ethenediyl}tris(N,N-diphenyl)benzeneamine (4) were investigated by a steady-state spectral technique, quantum-chemical calculations, and a picosecond pump-probe method. These derivatives are of interest for their relatively high two-photon absorption. The steady-state excitation anisotropy spectra reveal the nature of the ground-state absorption bands. Semiempirical quantum-chemical calculations of the fluorene derivatives (AMI, ZINDO/S) show good agreement with experimental data. The spectral positions and alignment of various electronic transitions of derivatives 1-4 were estimated from their excited-state absorption and anisotropy spectra. (c) 2005 Optical Society of America.

Journal Title

Applied Optics

Volume

44

Issue/Number

33

Publication Date

1-1-2005

Document Type

Article

Language

English

First Page

7232

Last Page

7238

WOS Identifier

WOS:000233345000029

ISSN

1559-128X

Share

COinS