Quinone-substituted monometalated porphyrin dimers: models for photoinduced charge separation at fixed orientation and energy

Journal Article · Wed May 25 04:00:00 EDT 1988 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00219a052· OSTI ID:7243485

Sessler, J L; Johnson, M R; Lin, T; Creager, S E

Among the most significant issues currently being debated in the area of photosynthesis are those that concern the role that interchromophore interactions play in the initial charge separation process. In recent years a number of model compounds have been prepared in an effort to understand natural photosynthetic systems. The models reported to date, however, have nearly all consisted of a simple monomeric porphyrin covalently linked to one or more redox active groups and as a result have provided little insight into how interchromophore interactions might influence multistep photoinduced electron transfer reactions. The authors have therefore prepared a new series of photosynthetic models: the selectively metalated, quinone-substituted gable and flat dimers. These dimers contain the key biomimetic components, metalloporphyrin (ZnP), free-base porphyin (H/sub 2/P), and quinone (Q), held in several well-defined configurations. They provide the first matched set of photosynthetic models suitable for studying interchromophore orientation and energetic effects.

• Research Organization: Univ. of Texas, Austin (USA)
• OSTI ID: 7243485
• Journal Information: J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 110:11; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
AROMATICS
CARBOXYLIC ACIDS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
DATA
DIMERS
ELECTRON TRANSFER
EXPERIMENTAL DATA
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
MATHEMATICAL MODELS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PORPHYRINS
QUINONES
REDOX POTENTIAL
SYNTHESIS