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 number of about 1000 1O2 molecules in 70 x 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.
Naito
Kazuya
K
The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan.
Tachikawa
Takashi
T
Cui
Shi-Cong
SC
Sugimoto
Akira
A
Fujitsuka
Mamoru
M
Majima
Tetsuro
T
D007094:Imides / Q000737:chemistry; D008856:Microscopy, Fluorescence; D053758:Nanoparticles / Q000737:chemistry; D010084:Oxidation-Reduction; D012680:Sensitivity and Specificity; D026082:Singlet Oxygen / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry / Q000528:radiation effects; D014466:Ultraviolet Rays
D007094:Imides; C009495:titanium dioxide; D026082:Singlet Oxygen; D014025:Titanium