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Evaluation of photodynamic sensitize...

Beveridge, Andrew Cameron.

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Evaluation of photodynamic sensitizer photophysics through the transient grating method.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Evaluation of photodynamic sensitizer photophysics through the transient grating method./
Author:	Beveridge, Andrew Cameron.
Description:	176 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-05, Section: B, page: 2204.
Contained By:	Dissertation Abstracts International64-05B.
Subject:	Chemistry, Physical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3089423

Evaluation of photodynamic sensitizer photophysics through the transient grating method.
Beveridge, Andrew Cameron.

Evaluation of photodynamic sensitizer photophysics through the transient grating method. - 176 p.

Source: Dissertation Abstracts International, Volume: 64-05, Section: B, page: 2204.

Thesis (Ph.D.)--Brown University, 2003.

Application of the transient grating technique to the study of potential photodynamic therapy agents yields signals whose dependence on the presence of oxygen in solution is profound. A theoretical model describing the time evolution of the grating is derived for photodynamic sensitizers based on a simple three-level kinetic mechanism having two distinct contributions to the diffracted light signal: a density and an excited state population contribution. Here, three zinc phthalocyanines with varying numbers of fluorine substituents and perfluoro-isopropyl groups on the phthalocyanine macrocycle are studied by the transient grating method as potential photodynamic sensitizers. The triplet state lifetime and quantum efficiency for singlet oxygen production of the three phthalocyanines are determined by an analysis of the thermal mode of the transient grating. Data from experiments in acetone are fit to the model and discussed. The advantages of the transient grating method compared to alternative detection techniques of photophysical parameters of photodynamic sensitizers is discussed.Subjects--Topical Terms:

560527
Chemistry, Physical.

Evaluation of photodynamic sensitizer photophysics through the transient grating method.
LDR:01968nmm 2200265 4500 001 1864621
005 20041216132630.5
008 130614s2003 eng d
035 $a (UnM)AAI3089423
035 $a AAI3089423
040 $a UnM $c UnM
100 1 $a Beveridge, Andrew Cameron. $3 1952103
245 1 0 $a Evaluation of photodynamic sensitizer photophysics through the transient grating method.
300 $a 176 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-05, Section: B, page: 2204.
500 $a Adviser: Gerald J. Diebold.
502 $a Thesis (Ph.D.)--Brown University, 2003.
520 $a Application of the transient grating technique to the study of potential photodynamic therapy agents yields signals whose dependence on the presence of oxygen in solution is profound. A theoretical model describing the time evolution of the grating is derived for photodynamic sensitizers based on a simple three-level kinetic mechanism having two distinct contributions to the diffracted light signal: a density and an excited state population contribution. Here, three zinc phthalocyanines with varying numbers of fluorine substituents and perfluoro-isopropyl groups on the phthalocyanine macrocycle are studied by the transient grating method as potential photodynamic sensitizers. The triplet state lifetime and quantum efficiency for singlet oxygen production of the three phthalocyanines are determined by an analysis of the thermal mode of the transient grating. Data from experiments in acetone are fit to the model and discussed. The advantages of the transient grating method compared to alternative detection techniques of photophysical parameters of photodynamic sensitizers is discussed.
590 $a School code: 0024.
650 4 $a Chemistry, Physical. $3 560527
650 4 $a Chemistry, Analytical. $3 586156
690 $a 0494
690 $a 0486
710 2 0 $a Brown University. $3 766761
773 0 $t Dissertation Abstracts International $g 64-05B.
790 1 0 $a Diebold, Gerald J., $e advisor
790 $a 0024
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3089423