Comparing Spin-Selective Charge Transport through Donor-Bridge-Acceptor Molecules with Different Oligomeric Aromatic Bridges

Burning bridges: The exponential distance dependence (β value) of singlet and triplet charge recombination (CR) pathways is determined for three donor‐bridge‐acceptor (DBA) molecules. p‐Phenylethynylene and fluorenone bridges have similar β values, which differ significantly from those of p‐phenylen...

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Published inAngewandte Chemie (International ed.) Vol. 49; no. 16; pp. 2904 - 2908
Main Authors Scott, Amy M, Butler Ricks, Annie, Colvin, Michael T, Wasielewski, Michael R
Format Journal Article
LanguageEnglish
Published Weinheim Wiley-VCH Verlag 06.04.2010
WILEY-VCH Verlag
WILEY‐VCH Verlag
Wiley
Subjects
Anthracenes - chemistry
Chemistry
Chemistry, Multidisciplinary
conjugation
donor-acceptor systems
electron transfer
Electron Transport
energy conversion
Fluorenes - chemistry
intersystem crossing
Kinetics
Models, Chemical
Naphthalenes - chemistry
Photochemical Processes
Photochemistry
Physical Sciences
Science & Technology
Toluene - chemistry
RECOMBINATION
MECHANISM
TRIPLET-STATE
conjugation
WIRE
LONG-RANGE ELECTRON
intersystem crossing
donor-acceptor systems
electron transfer
SYSTEMS
ENERGY-TRANSFER
energy conversion
SUPEREXCHANGE
SEPARATION
EXCHANGE
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Summary:Burning bridges: The exponential distance dependence (β value) of singlet and triplet charge recombination (CR) pathways is determined for three donor‐bridge‐acceptor (DBA) molecules. p‐Phenylethynylene and fluorenone bridges have similar β values, which differ significantly from those of p‐phenylene bridges (see picture), thus implying that β for both singlet and triplet CR is system‐dependent, not bridge‐specific.
Bibliography:http://dx.doi.org/10.1002/anie.201000171
istex:607421A109E3F5BEBE80AB8121733A999B337621
Chemical Sciences, Geosciences, and Biosciences Division, Office of Basic Energy Sciences - No. DE-FG02-99ER14999
We thank Dr. Tomoaki Miura for helpful discussions. This work is supported by the Chemical Sciences, Geosciences, and Biosciences Division, Office of Basic Energy Sciences, DOE under grant no. DE-FG02-99ER14999.
ArticleID:ANIE201000171
ark:/67375/WNG-DC0JZQPZ-0
We thank Dr. Tomoaki Miura for helpful discussions. This work is supported by the Chemical Sciences, Geosciences, and Biosciences Division, Office of Basic Energy Sciences, DOE under grant no. DE‐FG02‐99ER14999.
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SourceType-Scholarly Journals-1
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ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201000171