Photophysical properties of the singlet and triplet states of the fullerenes, &,, and CrO, have been investigated in toluene, benzene, hexane and ethanol solutions by pica-and nano-second laser flash photolysis techniques. Lifetimes, extinction coefficients, quantum efficiencies of the formation of
Comparison of the efficiency of the laser photolysis of C60 and C70 fullerenes in solution
✍ Scribed by Libor Juha; Věra Hamplová; Pavel Kubát; Emmanuel Koudoumas; Stelios Couris
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 522 KB
- Volume
- 231
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
The effkiencies of the decomposition of two of the commonest fullerenes, C6,, and CT,,, induced in solution by irradiation with an XeCl (,I= 308 nm) or ArF (d= 193 nm) excimer laser are compared. It was found that when a solution containing a mixture of C& and C& fullerenes in n-hexane is irradiated with an XeCl laser, the ratio of the concentrations of the und~omposed clusters C&C,, increases with irradiation time. Thus, CT0 is decomposed more efficiently than CGO under these conditions. However, experiments carried out under other conditions ( ArF excimer laser, toluene solutions, bubbling of solutions with an inert gas or oxygen) did not exhibit this effect.
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