Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 115, Issue 33, Pages 16275-16281Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp202095a
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Funding
- Spanish Ministerio de Ciencia e Innovacion [CTQ2010-20870-C03-01]
- Generalitat de Catalunya and Fons Social Europeu
- IoF
- department of Chemistry and Biochemistry
- UMBC
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Optical detection of singlet oxygen, a reactive oxygen species that plays a crucial role in a variety of biomedical processes, is hampered by its extremely low emission probability. Using plasmonic effects induced in silver islands films coated with Co, we have been able to enhance the near-IR phosphorescence of singlet oxygen by a factor of ca. 35. Both an enhanced production of singlet oxygen via plasmon-induced light absorption and the perturbation of its radiative rate constant are shown to account for this effect. The dependence of the enhancement factor on the properties of the silver island films and on the amount of C-60 coated are discussed.
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