Citation: Jian Hua MA, Hua SHAO, Si De YAO, Nian Yun LIN. Photoinduced Electron Transfer Reaction between Poly-guanylic Acid (5') with Anthraquinone-2-sulfonate[J]. Chinese Chemical Letters, ;2000, 11(6): 527-530. shu

Photoinduced Electron Transfer Reaction between Poly-guanylic Acid (5') with Anthraquinone-2-sulfonate

a Department of Chemistry Engineering and Technology, College of Light Industry of Shandong, Jinan 250100;
b Laboratory of Radiation Chemistry Shanghai Institute of Nuclear Research, Chinese Academy of Science, P. O. Box 800-204, Shanghai 201800

Received Date: 8 November 1999
Revised Date: 12 February 2000

The electron transfer reaction between triplet anthraquinone-2-sulfonate with poly-guanylic acid (5) (poly[G]) in acetonitrile-H₂O has been investigated by 248 nm laser flash photolysis. The transient absorption spectra of radical cation of poly[G] and radical anion of anthraqunione-2-sulfonate(AQS) arising from electron transfer reaction has been observed simultaneously for the first time. The formation processes of radical cation of poly[G] and radical anion of anthraquinone-2-sulfonate as well as the decay processes of triplet anthraquinone-2-sulfonate have also been observed, the apparent rate constants for the formation and decay of transient species have been determined. The free energy changes in the process of the electron transfer was also calculated.
- Electron transfer reaction,
- poly[G],
- anthraquinone-2-sulfonate
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