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Título

Tetrathiafulvalene–Polychlorotriphenylmethyl Dyads: Influence of Bridge and Open-Shell Characteristics on Linear and Nonlinear Optical Properties

AutorSouto Salom, Manuel ; Calbo, Joaquín; Ratera, Immaculada ; Ortí, Enrique; Veciana, Jaume
Palabras claveDonor–acceptor complexes
Intramolecular charge transfer
Nonlinear optics
PTM radicals
Tetrathiafulvalene
Fecha de publicación16-ago-2017
EditorWiley-VCH
CitaciónChemistry - a European Journal 23(46): 11067-11075 (2017)
ResumenThree conjugated donor-π-acceptor radical systems (1 a–1 c) were prepared by bridging a tetrathiafulvalene (TTF) electron-donor unit to a polychlorotriphenylmethyl (PTM) electron-acceptor radical through vinylene units of different lengths. The dependence of the intramolecular charge transfer on the length of the conjugated bridge has been analyzed by different electrochemical and spectroscopic techniques. Linear optical properties and the second-order nonlinear optical (NLO) response of these derivatives have been computed by comparing systems 1 a–1 c with the non-radical analogues (2 a–2 c). Interestingly, an enhanced NLO response is predicted for dyads 1 a–1 c with PTM in the radical form and for compounds with longer vinylene bridges. Calculations confirm the active role the bridge plays for electronic communication between the donor TTF and the acceptor PTM units.
Versión del editorhttp://dx.doi.org/10.1002/chem.201701623
URIhttp://hdl.handle.net/10261/160784
ISSN0947-6539
http://dx.doi.org/10.13039/501100005053
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100002809
E-ISSN1521-3765
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