๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Triplet state properties and triplet-state-oxygen interactions of some linear and angular furocoumarins

โœ Scribed by Caroline N. Knox; Edward J. Land; T.George Truscott

Book ID
103992905
Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
434 KB
Volume
1
Category
Article
ISSN
1011-1344

No coin nor oath required. For personal study only.

โœฆ Synopsis

Linear and angular furocoumarins with conjugated external carbonyl substituents show higher triplet and singlet oxygen yields than the corresponding unsubstituted molecules. The efficiency of the oxygen quenching process to yield singlet oxygen is also higher for these substituted molecules. These changes are interpreted in terms of the "proximity effect" associated with two nearly degenerate n pi* and pi pi* excited states, and variations in the excess energy following furocoumarin triplet quenching by ground state triplet oxygen to yield singlet oxygen.

๐Ÿ“œ SIMILAR VOLUMES

Oxygen quenching of singlet and triplet
Oxygen quenching of singlet and triplet states
โœ L.K. Patterson; G. Porter; M.R. Topp ๐Ÿ“‚ Article ๐Ÿ“… 1970 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 260 KB

The ralc conskmts of quenching of singlet :mtl triplet states by oxygen hnve been measured for nine :~rom:~~ic h.vdroc:Irbons in solution. Singlcl quenching is diffusion controlled and similnr in nil cases but triplet quenching is slo~cr :md the quenching rrltc constant is closely r&ted to the recip