Published 1994
| Version v1
Miscellaneous
Kinetic observation of rapid electron transfer between thymine and thymidine anion radicals and caffeic acid. A pulse radiolysis study
- 1. Academia Sinica, Shanghai (China). Laboratory of Radiation Chemistry
Description
Rapid electron transfer from thymine or thymidine anion radicals to caffeic acid with rate constant of 1 x 109 M-1s-1 was observed by pulse radiolysis, leading to the formation of anion radicals of caffeic acid which is characterized with absorption maximum at 360 nm. Caffeic acid has a higher one-electron reduction potential than the target molecule (thymine or thymidine) and acts as a electrophilic protector which prevent the target anion radical from its irreversible protonation at C6 leading to its 5-yl radical via fast electron transfer. The kinetic demonstrations have provided dynamic evidence of charge transfer protection mechanism
Additional details
Publishing Information
- Imprint Title
- Laboratory of radiation chemistry (SRCL) academia sinica annual report 1994
- Imprint Pagination
- 81 p.
- Journal Page Range
- p. 29-33
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 29061657
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- ABSORPTION SPECTRA; ANIONS; BUFFERS; CINNAMIC ACID; ELECTRON BEAMS; ELECTRON TRANSFER; HYDROXY ACIDS; NITROGEN; RADICALS; RADIOLYSIS; REACTION KINETICS; THYMIDINE; THYMINE; TRANSIENTS
- Descriptors DEC
- AZINES; BEAMS; CARBOXYLIC ACIDS; CHARGED PARTICLES; CHEMICAL RADIATION EFFECTS; CHEMICAL REACTIONS; DECOMPOSITION; ELEMENTS; HETEROCYCLIC COMPOUNDS; HYDROXY COMPOUNDS; IONS; KINETICS; LEPTON BEAMS; MONOCARBOXYLIC ACIDS; NONMETALS; NUCLEOSIDES; NUCLEOTIDES; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; PARTICLE BEAMS; PYRIMIDINES; RADIATION EFFECTS; RIBOSIDES; SPECTRA; URACILS