Title
Singlet oxygen quantum yield determination for a fluorene-based two-photon photosensitizer
Abbreviated Journal Title
J. Fluoresc.
Keywords
singlet oxygen; photosensitizer; two-photon; fluorene; PHOTODYNAMIC THERAPY; TRIPLET-STATES; PHOTOCHEMICAL PROPERTIES; MOLECULAR-OXYGEN; CHARGE-TRANSFER; DERIVATIVES; GENERATION; SENSITIZERS; ABSORPTION; SOLVENTS; Biochemical Research Methods; Chemistry, Analytical; Chemistry, Physical
Abstract
The quantum yield, Phi(Delta), of singlet oxygen generation under two-photon excitation has been determined for a fluorene derivative. A photochemical method was developed using 1,3-diphenylisobenzofuran ( DPBF), a chemical quencher of O-1(2), and 2-(9,9-didecyl-7-nitrofluoren-2-yl) benzothiazole ( 1) as a two-photon photosensitizer ( PS). The photochemical kinetics of the quencher was measured by two different fluorescence methods. Fluorene 1 exhibited relatively high singlet oxygen quantum yield, Phi(Delta) approximate to 0.4 +/- 0.1, and had a two-photon absorption cross-section of 28 +/- 5 GM. Thus, 1 may have potential for use as a two-photon PS in the near-IR spectral region for biomedical applications.
Journal Title
Journal of Fluorescence
Volume
16
Issue/Number
1
Publication Date
1-1-2006
Document Type
Article
Language
English
First Page
111
Last Page
117
WOS Identifier
ISSN
1053-0509
Recommended Citation
"Singlet oxygen quantum yield determination for a fluorene-based two-photon photosensitizer" (2006). Faculty Bibliography 2000s. 5940.
https://stars.library.ucf.edu/facultybib2000/5940
Comments
Authors: contact us about adding a copy of your work at STARS@ucf.edu