PHOTOACOUSTIC AND PHOTOTHERMAL DETECTION OF PHOTOSENSITIZED OXYGENATIONS

Authors
POULET P SALNICK A SZURKOWSKI J CHAMBRON J
Citation
P. Poulet et al., PHOTOACOUSTIC AND PHOTOTHERMAL DETECTION OF PHOTOSENSITIZED OXYGENATIONS, Journal de physique. IV, 4(C7), 1994, pp. 473-476
Citations number
6
Categorie Soggetti
Physics
Journal title
Journal de physique. IV → ACNP
ISSN journal
11554339
Volume
4
Issue
C7
Year of publication
1994
Pages
473 - 476
Database
ISI
SICI code
1155-4339(1994)4:C7<473:PAPDOP>2.0.ZU;2-Q
Abstract
Study of relaxation processes of excited states of hematoporphyrin IX (HP) solutions (in ethanol and methanol) in the presence of tetramethy l ethylene chemical acceptor using both the photoacoustic (PA) - micro phone - and photothermal (PT)- PZT - detection, is described. A signif icant difference between PA and PT signal behaviour has been observed when extremely low (down to 1.25 mu M, PT measurements) and high (up t o 2.5 mM, PA measurements) concentrations of sensitizer were used.