THE QUANTITATIVE-DETERMINATION OF THE S(0)-T(1) ABSORPTION IN PYRENE WITH THE USE OF INTRACAVITY ABSORPTION-SPECTROSCOPY

Authors
BETTERMANN H
Citation
H. Bettermann, THE QUANTITATIVE-DETERMINATION OF THE S(0)-T(1) ABSORPTION IN PYRENE WITH THE USE OF INTRACAVITY ABSORPTION-SPECTROSCOPY, Spectrochimica acta. Part A: Molecular spectroscopy, 50(6), 1994, pp. 1073-1079
Citations number
23
Categorie Soggetti
Spectroscopy
Journal title
Spectrochimica acta. Part A: Molecular spectroscopy → ACNP
ISSN journal
05848539
Volume
50
Issue
6
Year of publication
1994
Pages
1073 - 1079
Database
ISI
SICI code
0584-8539(1994)50:6<1073:TQOTSA>2.0.ZU;2-F
Abstract
The spin-forbidden S0-T1 transition of pyrene was quantitatively inves tigated by applying intracavity absorption spectroscopy. The measureme nts were carried out in benzolic solutions. The molar decadic extincti on coefficient of the 0-0 transition was determined to 6.0 x 10(-4) dm 3 mol-1 cm-1. The integral absorptivity was calculated to 2.94 x 10(-2 ) dm3 mol-1 cm-2 and yielded an intrinsic phosphorescence lifetime of 55.4 s. The intracavity absorptions were measured in a cavity-dumped R hodamine 6G dye laser. Absorbances were recorded in the range between 8 x 10(-4) and 5 X 10(-6).