期刊
DALTON TRANSACTIONS
卷 -, 期 1, 页码 134-139出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b814384f
关键词
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资金
- Spanish MEC [CTQ06-06758, CTQ2005-02609/BTQ]
- Comunidad de Madrid [P-PPQ-000225-0505]
- CSIC Intramural Project [200560F0071]
- Universidad Politecnica de Valencia
- Spanish Ministry of Education
Gold nanoparticles (npAu, 5 nm diameter) stabilized by hexanethiol and dodecanethiol do not exhibit in THF upon laser. ash excitation (355 nm) any detectable transient in the microsecond timescale. However, using octadecanethiol as npAu ligand, a weak signal attributed to THF solvated electrons was observed after excitation 355 nm. In contrast, irrespective of the alkyl length of the thiol ligand, irradiation of npAu in 1-butyl-3-methylimidazolium ionic liquid allows detecting charge separation in the microsecond time scale. By quenching with methyl viologen (MV) and determining the concentration of MV+center dot, it was estimated that the quantum yield of charge separation state in ionic liquid was 0.12.
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