Dynamics of charge-transfer excited states relevant to photochemical energy conversion

Technical Report · Fri Jan 01 04:00:00 EST 1993

DOI:https://doi.org/10.2172/6853117· OSTI ID:6853117

Lim, E C

A systematic study of intramolecular photoassociation and photoinduced charge transfer (CT) was initiated in bichromophoric systems of M-X-M, where two identical aromatic hydrocarbons M are joined by X=CH[sub 2], O, NH, etc. Dinaphthylamines, dinaphthylethers, and dinaphthylmethanes in nonpolar solvents form triplet excimers, following inter system crossing of singlets to the triplet manifold; in polar solvents, the molecule forms an intramolecular CT state. The interchromophore interaction study was extended to N-phenyl-2-naphthylamine. The lowest excited singlet states of the dinaphthylamines were studied by semiempirical quantum chemical methods. Exciplex formation was studied in excited states of jet-cooled van der Waals complexes, such as fluorene/substituted benzenes and 1-cyanonaphthalene-aliphatic amines.

• Research Organization: Akron Univ., OH (United States). Dept. of Chemistry
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-89ER14024
• OSTI ID: 6853117
• Report Number(s): DOE/ER/14024-4; ON: DE93013981
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
AMINES
AROMATICS
CHARGE TRANSPORT
CHEMICAL REACTIONS
COMPLEXES
CONDENSED AROMATICS
CONVERSION
DOCUMENT TYPES
DYES
ENERGY CONVERSION
ENERGY LEVELS
EXCITED STATES
EXCITONS
FLUORENE
FLUORESCENCE
HYDROCARBONS
LUMINESCENCE
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PROGRESS REPORT
QUASI PARTICLES
SOLVENTS
VAN DER WAALS FORCES