title: Single-molecule detection of airborne singlet oxygen.
abstract: 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.
authors.affiliation: The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan.
authors.forename: Kazuya
authors.initials: K
authors.lastname: Naito
authors.forename: Takashi
authors.initials: T
authors.lastname: Tachikawa
authors.forename: Shi-Cong
authors.initials: SC
authors.lastname: Cui
authors.forename: Akira
authors.initials: A
authors.lastname: Sugimoto
authors.forename: Mamoru
authors.initials: M
authors.lastname: Fujitsuka
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Majima
mesh_terms: 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
chemical_list: D007094:Imides; C009495:titanium dioxide; D026082:Singlet Oxygen; D014025:Titanium