Ultrafast photoinduced electron transfer reactions in supramolecular arrays: Studies of electronic coupling and solvation

Conference · Fri Jan 01 00:00:00 EST 1993

OSTI ID:6361504

Wasielewski, M R; Wiederrecht, G P; Svec, W A

Research in our laboratory focuses on developing supramolecular arrays that produce long-lived charge separation by limiting the electronic coupling between the separated charges, and on the role of solvation in determining the rates and energetics of photoinitiated electron transfer reactions. Arrays have been developed that closely mimic the electronic coupling that was observed only for long-lived radical pairs produced in photosynthetic glassy solids. A series of 36 fixed-distance donor-acceptor molecules using porphyrin donors, triptycene spacers, and 9 different acceptors has been prepared; these are used to probe the dependence of photoinduced charge separation rates on free energy of reaction as a function of solvent both in liquid and solid solution. Data were obtained on rates of charge separation in dioxane, MTHF, butyronitrile, toluene, chlorobenzene, and benzonitrile.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6361504
• Report Number(s): ANL/CHM/CP-79459; CONF-9306113-1; ON: DE93012910
• Resource Relation: Conference: 17. solar photochemistry research conference, Brainerd, MN (United States), 6-10 Jun 1993
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
ZINC COMPLEXES
ELECTRON TRANSFER
PHOTOCHEMICAL REACTIONS
CONDENSED AROMATICS
ELECTRIC CHARGES
ENERGY STORAGE
ION PAIRS
PORPHYRINS
SOLVATION
AROMATICS
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
COMPLEXES
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
STORAGE
140505* - Solar Energy Conversion- Photochemical
Photobiological
& Thermochemical Conversion- (1980-)