Some photophysical properties of coumarin-1 dye in different concentrations
Other Title(s)
بعض الخصائص الفيزيائية الضوئية لصبغة الكومارين-1 في محلول الميثانول و بتراكيز مختلفة
Joint Authors
Talib, Abd al-Mahdi
Husayn, Ali Abd al-Karim
Jiyad, Baha Tumah
Source
Issue
Vol. 43, Issue 2 (31 Aug. 2002), pp.98-105, 8 p.
Publisher
University of Baghdad College of Science
Publication Date
2002-08-31
Country of Publication
Iraq
No. of Pages
8
Main Subjects
Abstract AR
أمكن قياس زمن عمر التألق (أو الانبعاث) لصبغة الكومارين -1 في محلول الميثانول بتراكيز مختلفه باستخدام تقانة الفوتون المفرد.
فسر تغير زمن العمر مع التراكيز على أساس ظاهرة الامتصاص الذاتي، و أمكن حساب كل من معدل الكبت الداخلي KIM و معدل العبور البيني بين النظم KGM عند مختلف التراكيز و ذلك للتأكد من مشاركة الكبت الناتج عن تكون ثنائي الجزيئات أو المعقدات الجزيئية الأخرى.
Abstract EN
The fluorescence lifetime of coumarin-1 d}-e is measured in the solution of methanol at different concentrations utilizing single photon counting technique.
The variation of fluorescence lifetime with concentration is explained in term of self quenching.
Both internal quenching rate parameters Kim and intersystem crossing rate parameters Kgm are calculated at different concentrations to ensure the participation of the quenching produced by the dimer and other complexes formation.
INTRDDUCTI©N The choice ofa particular organic dye for the^ye laser is based on its satisfying the general requirements such as high fluorescence quantum yield, low triplet—triplet absorption.short singlet state lifetime, high photochemical stability and wide spectral range [!].
However, in a number of cases, it is found that the study of other molecular parameter such as stimulated emission cross - section.
American Psychological Association (APA)
Jiyad, Baha Tumah& Husayn, Ali Abd al-Karim& Talib, Abd al-Mahdi. 2002. Some photophysical properties of coumarin-1 dye in different concentrations. Iraqi Journal of Science،Vol. 43, no. 2, pp.98-105.
https://search.emarefa.net/detail/BIM-595593
Modern Language Association (MLA)
Husayn, Ali Abd al-Karim…[et al.]. Some photophysical properties of coumarin-1 dye in different concentrations. Iraqi Journal of Science Vol. 43, no. 2 (2002), pp.98-105.
https://search.emarefa.net/detail/BIM-595593
American Medical Association (AMA)
Jiyad, Baha Tumah& Husayn, Ali Abd al-Karim& Talib, Abd al-Mahdi. Some photophysical properties of coumarin-1 dye in different concentrations. Iraqi Journal of Science. 2002. Vol. 43, no. 2, pp.98-105.
https://search.emarefa.net/detail/BIM-595593
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 104
Record ID
BIM-595593