Photostabilizing effects of lidocaine and tris(8-hydroxy-quinoline) aluminum on organic fluorescent dyes

Wade N. Sisk

doi:10.1117/12.473106

14 July 2003 Photostabilizing effects of lidocaine and tris(8-hydroxy-quinoline) aluminum on organic fluorescent dyes

Wade N. Sisk

Proceedings Volume 4991, Organic Photonic Materials and Devices V; (2003) https://doi.org/10.1117/12.473106
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States

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.

Citation Download Citation

Wade N. Sisk "Photostabilizing effects of lidocaine and tris(8-hydroxy-quinoline) aluminum on organic fluorescent dyes", Proc. SPIE 4991, Organic Photonic Materials and Devices V, (14 July 2003); https://doi.org/10.1117/12.473106

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