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Applying the Oligomer Approach to Luminescent Conjugated Organoboranes
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Department of Chemistry, Rutgers University—Newark, 73 Warren Street, Newark, New Jersey 07102, United States
J. Am. Chem. Soc., 2011, 133 (23), pp 8802–8805
DOI: 10.1021/ja201436a
Publication Date (Web): May 17, 2011
Copyright © 2011 American Chemical Society
Abstract
A series of highly luminescent monodisperse fluoreneborane oligomers (n = 1–6) were prepared using a new iterative synthetic procedure that takes advantage of the highly selective and differential reactivity of bromoboranes with arylsilanes and arylstannanes. Cyclic and square wave voltammetry revealed a gradual decrease of the LUMO energy levels with increasing chain length, while absorption and emission data showed a bathochromic shift and increase in quantum efficiency. An extended conjugation length of nECL = 5 was derived.
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- Published In Issue June 15, 2011
- Article ASAPMay 17, 2011
- Received: February 15, 2011
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