Single-Molecule Detection of Airborne Singlet Oxygen

Airborne singlet oxygen (1O2) molecules, which are generated during the TiO2 photocatalytic reactions and diffused from the surface into air, were detected at the opposite surface using terrylenediimide (TDI) molecules at the single-molecule level. The novel 1O2 nanosensor, which has a detectable nu...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2006-12, Vol.128 (51), p.16430-16431
Main Authors: Naito, Kazuya, Tachikawa, Takashi, Cui, Shi-Cong, Sugimoto, Akira, Fujitsuka, Mamoru, Majima, Tetsuro
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Imides - chemistry
Microscopy, Fluorescence
Nanoparticles - chemistry
Oxidation-Reduction
Sensitivity and Specificity
Singlet Oxygen - analysis
Singlet Oxygen - chemistry
Singlet Oxygen - radiation effects
Surface Properties
Titanium - chemistry
Titanium - radiation effects
Ultraviolet Rays
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Description
Summary:Airborne singlet oxygen (1O2) molecules, which are generated during the TiO2 photocatalytic reactions and diffused from the surface into air, were detected at the opposite surface using terrylenediimide (TDI) molecules at the single-molecule level. The novel 1O2 nanosensor, which has a detectable number of about 1000 1O2 molecules in 70 × 70 square micrometers, can easily detect the single 1O2 molecule at a distance of over 1000 micrometers from the place of its creation in ambient air.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja066739b