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1 January 2002 Effects of Surfactants on the Photosensitized Production of Tyrosine Radicals Studied by Photo-CIDNP
J. J. Lopez, M. A G. Carter, YuP. Tsentalovich, O. B. Morozova, A. V. Yurkovskaya, P. J. Hore
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Abstract

The influence of the surfactants sodium dodecyl sulphate, cetyltrimethyl-ammonium bromide and triton X-100 on the photochemically induced dynamic nuclear polarization (CIDNP) of N-acetyl tyrosine has been investigated. Three photosensitizers were used to generate polarization: thionin, eosin Y and flavin mononucleotide. 600 MHz 1H photo-CIDNP experiments, supported by laser flash photolysis transient absorption measurements, indicate that the neutral triton surfactant has no influence on the nuclear polarization, but that the other two, charged, amphiphiles affect the photochemistry in a variety of ways, depending on the surfactant concentration and the identity of the sensitizer.

J. J. Lopez, M. A G. Carter, YuP. Tsentalovich, O. B. Morozova, A. V. Yurkovskaya, and P. J. Hore "Effects of Surfactants on the Photosensitized Production of Tyrosine Radicals Studied by Photo-CIDNP," Photochemistry and Photobiology 75(1), 6-10, (1 January 2002). https://doi.org/10.1562/0031-8655(2002)075<0006:EOSOTP>2.0.CO;2
Received: 29 May 2001; Accepted: 1 October 2001; Published: 1 January 2002
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