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Proceedings Paper

Photostabilizing effects of lidocaine and tris(8-hydroxy-quinoline) aluminum on organic fluorescent dyes
Author(s): Wade N. Sisk
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Paper Abstract

The photostabilization efficacy of lidocaine and tris(8-hydroxy-quinoline) aluminum (Alq3) was determined for methanol solutions of the fluorescent laser dyes 1,3,5,7,8-pentamethyl-2,6-diethylpyrromethene-difluoroborate complex (PM-567) and rhodamine 590 (R590) by evaluation with the , rose bengal (RB). The photostability was measured by noting the decrease in fluorescence with accumulated 532 nm Nd:YAG laser pulses. Rose bengal demonstrated dramatic photostability enhancement upon lidocaine or Alq3 addition; whereas nominal photostability enhancement was observed for PM-567 and R590 upon lidocaine or Alq3 addition. A geminate dye-singlet oxygen complex is proposed to explain the disparity in dye photostability enhancement between rose bengal and the laser dyes.

Paper Details

Date Published: 14 July 2003
PDF: 9 pages
Proc. SPIE 4991, Organic Photonic Materials and Devices V, (14 July 2003); doi: 10.1117/12.473106
Show Author Affiliations
Wade N. Sisk, Univ. of North Carolina/Charlotte (United States)

Published in SPIE Proceedings Vol. 4991:
Organic Photonic Materials and Devices V
James G. Grote; Toshikuni Kaino, Editor(s)

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