Single molecule detection and photochemistry on a surface using near-field optical excitation
Journal Article
·
· Physical Review Letters; (United States)
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
We report the first photobleaching experiments of single molecules on a surface. Single molecules of rhodamine 6[ital G] are detected on a silica surface under ambient conditions using near-field scanning optical microscopy. Photobleaching of an individual molecule appears as an abrupt disappearance of fluorescence after seconds of constant excitation. Other reversible, upward and downward changes in fluorescence are observed, possibly due to reorientation of molecules on the surface.
- OSTI ID:
- 5223978
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:1; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
664400 -- Experimentally Derived Information on Atomic & Molecular Properties-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ADSORPTION
AMINES
BLEACHING
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMISTRY
DYES
EMISSION SPECTROSCOPY
FLUORESCENCE SPECTROSCOPY
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
MEASURING METHODS
MICROSCOPY
MOLECULAR STRUCTURE
MOLECULES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMISTRY
REAGENTS
RHODAMINES
SCANNING LIGHT MICROSCOPY
SILICON COMPOUNDS
SILICON OXIDES
SORPTION
SPECTROSCOPY
SURFACE PROPERTIES
664400 -- Experimentally Derived Information on Atomic & Molecular Properties-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ADSORPTION
AMINES
BLEACHING
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMISTRY
DYES
EMISSION SPECTROSCOPY
FLUORESCENCE SPECTROSCOPY
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
MEASURING METHODS
MICROSCOPY
MOLECULAR STRUCTURE
MOLECULES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMISTRY
REAGENTS
RHODAMINES
SCANNING LIGHT MICROSCOPY
SILICON COMPOUNDS
SILICON OXIDES
SORPTION
SPECTROSCOPY
SURFACE PROPERTIES