Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6602017 | Electrochimica Acta | 2018 | 29 Pages |
Abstract
In the present paper, the synthesis and characterization of 2,2â²-bis{bi[2,2'-(3,4-ethylenedioxy)thiophen-5-yl]}-3,3â²-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.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Tiziana Benincori, Sergio Gámez-Valenzuela, Miriam Goll, Kirsten Bruchlos, Claudia Malacrida, Serena Arnaboldi, Patrizia Romana Mussini, Monica Panigati, Juan T. López Navarrete, M. Carmen Ruiz Delgado, Giulio Appoloni, Sabine Ludwigs,