## Abstract The bimolecular rate constants __k__~q~ for quenching of singlet oxygen (^1^Ξ~g~ state) by 26 different natural and novel synthetic carotenoids were determined at 37 Β°C in a mixture of chloroform and ethanol. The steadyβstate technique used involves the generation of ^1^O~2~ by thermal
High temperature quenching reactions of singlet molecular oxygen
β Scribed by Peter Borrell; Patricia M. Borrell; D.S. Richards; R.B. Boodaghians
- Publisher
- Elsevier Science
- Year
- 1984
- Weight
- 650 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0047-2670
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
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
The correlation of the reactive component of the bimolecular quenching rate constant, k r , with DG for reactions of singlet molecular oxygen with phenols is interpreted in terms of classical and semiclassical theories of electron transfer. Both treatments indicate a diabatic process with a reorgani
On the basis of the spin-and space-symmetry conservation criteria proposed previously, the cyclo~~~ition reactions of singlet molecular osy~en toward olehs and the thermal decomposition of dioxclane are characterized with respect to the mechanistic feature (conctrted, zwitterionic or biradical). The