Abstract
Supramolecular systems synthesized to model the photosynthetic reaction center (RC) are designed to mimic several key properties of the RC protein. Thus far, most RC models fulfill only a subset of these criteria, with very few reports employing time-resolved electron paramagnetic resonance spectroscopy (TREPR). We now report TREPR results on a photosynthetic model system (1) in a nematic liquid crystal (LC) that does not contain the natural pigments, yet closely mimics the spin dynamics of triplet state formation found only in photosynthetic RCs. The design of supermolecule 1 follows criteria established for promoting high quantum yield charge separation in glassy media. The observation of this triplet state in 1 by TREPR demonstrates that most of the electronic states found in the primary photochemistry of photosynthetic RCs can be mimicked successfully in synthetic models interacting with LCs.
| Original language | English |
|---|---|
| Pages (from-to) | 8055-8056 |
| Number of pages | 2 |
| Journal | Journal of the American Chemical Society |
| Volume | 117 |
| Issue number | 30 |
| DOIs | |
| Publication status | Published - Aug 2 1995 |
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ASJC Scopus subject areas
- Chemistry(all)
Cite this
Mimicry of the radical pair and triplet states in photosynthetic reaction centers with a synthetic model. / Hasharoni, Kobi; Levanon, Haim; Greenfield, Scott R.; Gosztola, David J.; Svec, Walter A.; Wasielewski, Michael R.
In: Journal of the American Chemical Society, Vol. 117, No. 30, 02.08.1995, p. 8055-8056.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Mimicry of the radical pair and triplet states in photosynthetic reaction centers with a synthetic model
AU - Hasharoni, Kobi
AU - Levanon, Haim
AU - Greenfield, Scott R.
AU - Gosztola, David J.
AU - Svec, Walter A.
AU - Wasielewski, Michael R
PY - 1995/8/2
Y1 - 1995/8/2
N2 - Supramolecular systems synthesized to model the photosynthetic reaction center (RC) are designed to mimic several key properties of the RC protein. Thus far, most RC models fulfill only a subset of these criteria, with very few reports employing time-resolved electron paramagnetic resonance spectroscopy (TREPR). We now report TREPR results on a photosynthetic model system (1) in a nematic liquid crystal (LC) that does not contain the natural pigments, yet closely mimics the spin dynamics of triplet state formation found only in photosynthetic RCs. The design of supermolecule 1 follows criteria established for promoting high quantum yield charge separation in glassy media. The observation of this triplet state in 1 by TREPR demonstrates that most of the electronic states found in the primary photochemistry of photosynthetic RCs can be mimicked successfully in synthetic models interacting with LCs.
AB - Supramolecular systems synthesized to model the photosynthetic reaction center (RC) are designed to mimic several key properties of the RC protein. Thus far, most RC models fulfill only a subset of these criteria, with very few reports employing time-resolved electron paramagnetic resonance spectroscopy (TREPR). We now report TREPR results on a photosynthetic model system (1) in a nematic liquid crystal (LC) that does not contain the natural pigments, yet closely mimics the spin dynamics of triplet state formation found only in photosynthetic RCs. The design of supermolecule 1 follows criteria established for promoting high quantum yield charge separation in glassy media. The observation of this triplet state in 1 by TREPR demonstrates that most of the electronic states found in the primary photochemistry of photosynthetic RCs can be mimicked successfully in synthetic models interacting with LCs.
UR - http://www.scopus.com/inward/record.url?scp=0029633004&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029633004&partnerID=8YFLogxK
U2 - 10.1021/ja00135a040
DO - 10.1021/ja00135a040
M3 - Article
AN - SCOPUS:0029633004
VL - 117
SP - 8055
EP - 8056
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 30
ER -