Title
Steady-state spectroscopic and fluorescence lifetime measurements of new two-photon absorbing fluorene derivatives
Abbreviated Journal Title
J. Fluoresc.
Keywords
steady-state spectroscopy; fluorescence lifetime; anisotropy; RHODAMINE 6G; 2-PHOTON; SYSTEMS; Biochemical Research Methods; Chemistry, Analytical; Chemistry, Physical
Abstract
Steady-state excitation anisotropy, lifetimes, and time-resolved emission spectra of new 2-photon absorbing fluorene derivatives were measured in aprotic solvents at room temperature. Excitation anisotropy spectra in viscous silicon oil allowed the determination of the spectral position of three electronic transitions S-0 -- > S-1, S-0 -- > S-2, S-0 -- > S-3 (S-i, i = 1, 2, 3 are the singlet electronic states) and the angles (approximate to 30degrees) between absorption S-0 -- > S-1 and emission S-1 -- > S-0 dipole moments for the first electronic transition. Solvate relaxation processes in the first excited state of the investigated fluorene molecules affect the lifetimes of these states, tau(1), so that experimental values Of tau(1) do not correspond to those calculated by Strickler and Berg theory. The influence of the molecular concentration on the fluorescence quantum yields and tau(1) have been investigated.
Journal Title
Journal of Fluorescence
Volume
12
Issue/Number
3-4
Publication Date
1-1-2002
Document Type
Article
Language
English
First Page
449
Last Page
454
WOS Identifier
ISSN
1053-0509
Recommended Citation
"Steady-state spectroscopic and fluorescence lifetime measurements of new two-photon absorbing fluorene derivatives" (2002). Faculty Bibliography 2000s. 3066.
https://stars.library.ucf.edu/facultybib2000/3066
Comments
Authors: contact us about adding a copy of your work at STARS@ucf.edu