Activation of chemical reaction by impact of molecules on a surface. 2. The decomposition of tetramethyldioxetane

Journal Article · Thu Sep 13 04:00:00 EDT 1984 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j150663a010· OSTI ID:6223229

Bottari, F J; Greene, E F

Molecules of tetramethyldioxetane (TMD) in a beam from a supersonic nozzle are accelerated up to kinetic energies E/sub k/ of 170 kJ mol/sup -1/ by being seeded into an excess of H/sub 2/ carrier gas. Light emitted when the molecules are suddenly brought to rest by collision with various surfaces is detected by a photomultiplier tube. The amount of light emitted varies with the nature and temperature of the surface as well as the temperature of the nozzle. It is greatest for surfaces of poly(tetrafluoroethylene) and a fluorinated copolymer of ethylene and propylene, but the yields are low, producing no more than 2 x 10/sup -7/ photons per molecule of TMD when the nozzle and surface are at room temperature. Other surfaces studied are stainless steel, glass, polyethylene, a polyimide, poly(vinylidene chloride), polyethylene terephthalate, and paraffin. Activation by impact permits the transfer of a large amount of kinetic to internal energy of a molecule in a single collision, so experiments of this kind should be helpful in the study of the detailed nature of chemical reactions.

• Research Organization: Brown Univ., Providence, RI
• OSTI ID: 6223229
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 88:19; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
ALLOYS
AROMATICS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
DATA
ENERGY
ENERGY-LEVEL TRANSITIONS
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENATED AROMATIC HYDROCARBONS
HYDROCARBONS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
KETONES
LUMINESCENCE
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMER