Electrochemical studies of a new, low-band gap inherently chiral ethylenedioxythiophene-based oligothiophene
Articolo
Data di Pubblicazione:
2018
Citazione:
Electrochemical studies of a new, low-band gap inherently chiral ethylenedioxythiophene-based oligothiophene / T. Benincori, S. Gamez-Valenzuela, M. Goll, K. Bruchlos, C. Malacrida, S. Arnaboldi, P.R. Mussini, M. Panigati, T. Lopez Navarrete Juan, C. Ruiz Delgado M., G. Appoloni, S. Ludwigs. - In: ELECTROCHIMICA ACTA. - ISSN 0013-4686. - 284:(2018 Sep 10), pp. 513-525. [10.1016/j.electacta.2018.07.147]
Abstract:
In the present paper, the synthesis and characterization of 2,2'-bis{bi[2,2'-(3,4-ethylenedioxy)thiophen-5- yl]}-3,3'-bithianaphthene, nicknamed BT2E4, is reported. We show that electrooligomerization of BT2E4 leads to electroactive films which are evaluated by cyclic voltammetry (CV), UV/vis spectroelectrochemistry and CV coupled with in-situ conductance measurements. Direct comparisons to the properties of the oligomers obtained from the atropisomeric all-thiophene analogue BT2T4 show that the introduction of EDOT leads to a strong reduction of the band-gap, an overall red-shifted absorption spectrum and a rigidification of the structure. Finally, DFT and TD-DFT calculations were performed in parallel to investigate and to compare the electronic and molecular structures of neutral and charged monomer and oligomer species.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Low-band gap monomer; bisEDOT; Self-rigidification; Cyclic oligomers; Mixed valence conductivity
Elenco autori:
T. Benincori, S. Gamez-Valenzuela, M. Goll, K. Bruchlos, C. Malacrida, S. Arnaboldi, P.R. Mussini, M. Panigati, T. Lopez Navarrete Juan, C. Ruiz Delgado M., G. Appoloni, S. Ludwigs
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