ON THE ORIGIN OF LASER-SPECIFIC LUMINESCENCE UPON PULSED-LASER EXCITATION OF BENZOPHENONES IN FREONS

Autor:	Juan C. Scaiano, K. Brady Clark
Rok vydání:	1989
Předmět:	Excimer laser Chemistry medicine.medical_treatment General Medicine Laser Photochemistry Biochemistry law.invention chemistry.chemical_compound law Excited state medicine Benzophenone Moiety Physical and Theoretical Chemistry Luminescence Phosphorescence Excitation
Zdroj:	Photochemistry and Photobiology. 50:535-540
ISSN:	1751-1097 0031-8655
DOI:	10.1111/j.1751-1097.1989.tb05560.x
Popis:	–Excimer laser excitation (308 nm) of benzophenone in Freon-113, as well as in Freon-11, results in an intense emission with λmax at approx. 530 nm in addition to triplet phosphorescence. This emission is shown to result from an excited free radical bearing the diphenylmethylene moiety which is generated in a two-photon process and which luminesces upon sensitization by the benzophenone triplet. On the basis of its spectroscopic properties and the chemical nature of the system, it is suggested that the fluorescer in this system may be the hypochlorite radical, Ph2COCl.
Databáze:	OpenAIRE
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