Abstract
The electronic structure of the low-temperature phosphorescencent probe 6-thioguanine was investigated. Structural transitions in some alcohols (ethanol, glycerol, propanediol) were obtained using this probe in the range 4.2–273 K. Aqueous solutions of native and denatured DNA and those of native DNA with propanediol and DMSO added were studied in the range of 4.2–273 K. The analysis of the luminescence spectra of DNA solutions permits the assumption of the energy transfer to the probe on UV radiation of DNA. © 1994 John Wiley & Sons, Inc.
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