Table of Contents
Laser Chemistry
Volume 13, Issue 1, Pages 19-28

Characterization of New Excimer Pumped UV Laser Dyes 3. P-Quinqui-, Sexi-, Octi- and Deciphenyls

1Chemistry Department, University of Cincinnati, Cincinnati 45221-0172, OH, USA
2Chemistry Department, Philadelphia College of Pharmacy and Science, 600 South 43rd St., Philadelphia 19104-4495, PA, USA
3Exciton, Inc., P.O. Box 31126, Overlook Station, Dayton 45431, OH, USA
4Chemistry Department, Massachusetts College of Pharmacy and Allied Health Sciences, 179 Longwood Ave., Boston 02115, MA, USA

Received 9 April 1992; Accepted 15 May 1992

Copyright © 1993 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The spectroscopic and lasing characteristics of a series of 308 nm pumped p-oligophenylenes with five or more phenyl rings have been studied. Quantitative comparisons of the absorption spectra of these dyes with numerous other dyes in this class of compounds can be made by defining a parameter, theta, as the sum of the number of phenyl rings and the number of ring-bridges. Statistically good linear regressions result from the correlations of molar extinction with theta and from wavelength of absorbance with the reciprocal of theta. We find that these correlations provide good predictive information in deciding which dyes to attempt to synthesize for testing. The lasing characteristics of the dyes studied show that these dyes are amongst the best dyes in this class of dyes. Some of these dyes have exceptionally long lifetimes coupled with acceptable conversion efficiencies.