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Bis(aminoaryl) Carbon-Bridged Oligo(phenylenevinylene)s Expand the Limits of Electronic Couplings

AutorMayorga, Paula; Franco, Carlos ; Rovira, Concepció ; Veciana, Jaume ; Casado, Juan
Palabras claveAbsorption
Charge transfer
Oligomerization
Radicals
Structure determination
Fecha de publicación6-mar-2017
EditorWiley-VCH
CitaciónAngewandte Chemie - International Edition 56(11): 2898-2902 (2017)
ResumenCarbon-bridged bis(aminoaryl) oligo(para-phenylenevinylene)s have been prepared and their optical, electrochemical, and structural properties analyzed. Their radical cations are class III and class II mixed-valence systems, depending on the molecular size, and they show electronic couplings which are among the largest for the self-exchange reaction of purely organic molecules. In their dication states, the antiferromagnetic coupling is progressively tuned with size from quinoidal closed-shell to open-shell biradicals. The data prove that the electronic coupling in the radical cations and the singlet–triplet gap in the dications show similar small attenuation factors, thus allowing charge/spin transfer over rather large distances. ·
Versión del editorhttp://dx.doi.org/10.1002/anie.201610921
URIhttp://hdl.handle.net/10261/151396
DOI10.1002/anie.201610921
ISSN1433-7851
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