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Literature DB >> 17510778

Metal-enhanced singlet oxygen generation: a consequence of plasmon enhanced triplet yields.

Yongxia Zhang¹, Kadir Aslan, Michael J R Previte, Chris D Geddes.

Abstract

In this Rapid Communication, we report the first observation of Metal-Enhanced singlet oxygen generation (ME(1)O(2)). Rose Bengal in close proximity to Silver Island Films (SiFs) can generate more singlet oxygen, a three-fold increase observed, as compared to an identical glass control sample but containing no silver. The enhanced absorption of the photo-sensitizer, due to coupling to silver surface plasmons, facilitates enhanced singlet oxygen generation. The singlet oxygen yield can potentially be adjusted by modifying the choice of MEF (Metal-Enhanced Fluorescence) & MEP (Metal Enhance Phosphorescence) parameters, such as distance dependence for plasmon coupling and wavelength emission of the coupling fluorophore. This is a most helpful observation in understanding the interactions between plasmons and lumophores, and this approach may well be of significance for singlet oxygen based clinical therapy.

Entities: Chemical

Mesh：

Substances：

Year: 2007 PMID： 17510778 DOI： 10.1007/s10895-007-0196-y

Source DB: PubMed Journal: J Fluoresc ISSN： 1053-0509 Impact factor: 2.525

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