𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Solvent effect on 1O2 yield and the mechanism of polycyclic hydrocarbon triplet-state quenching by oxygen

✍ Scribed by A.P. Darmanyan

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
604 KB
Volume
96
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis

The yield of singlet oxygen (@lo, ) in quenching of the triplets of 1.2.5.6dibenzanthracene. 1,2-benznnthncene. authracene. pyranthrene and duroquinone by oxygen has been studied using the laser photolysis technique. It ~3s found that in toluene @to2 = 1.0 + 0.1 and the quenching occurs via the energy transfer mechanism on accoun: of an exchange interaction in the encounter complex. In benzonitrile the charge transfer contributes to a significant extent. leading to I considerable decrease in +to2.

't~lumc 96. r~u~n\wr 3 CHEMCAL PHYSICS LETTERS

📜 SIMILAR VOLUMES

Electron transfer quenching of dye tripl
Electron transfer quenching of dye triplets by NO2− and N3−. A spin—orbit coupling effect on the radical yield
✍ G Winter; H Shioyama; U Steiner 📂 Article 📅 1981 🏛 Elsevier Science 🌐 English ⚖ 474 KB

Triplet quenching of 3-methyllumiflavin, thionine and thiopyronine by electron transfer from NO2 and N3 in acetonitrile, methanol and water was investigated by flash spectroscopy. The radical yield is systematically lower for N3 than for NO2, explicable by the different spin-orbit coupling propertie

Effect of the Media on the Quantum Yield
Effect of the Media on the Quantum Yield of Singlet Oxygen (O2(1Δg)) Production by 9H-Fluoren-9-one: Microheterogeneous Systems
✍ Claudia G. Martínez; André M. Braun; Esther Oliveros 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 German ⚖ 162 KB

The quantum yield (F D ) of singlet oxygen (O 2 ( 1 D g ) production by 9H-fluoren-9-one (FLU) is very sensitive to the nature of the solvent (0.02 in a highly polar and protic solvent, such as MeOH, to 1.0 in apolar solvents). This high sensitivity has been used for probing the interaction of FLU w