In the last years we have been introducing the attractive family of spider-like oligothiophenes, achieving reliable rationalization criteria for their structure/properties relationships[1,2]. Now we are ‘genetically modifying’ them by inserting a non-thiophene conjugated core with tunable electronic properties, with the aim of modulating both absolute and relative positions of the HOMO and LUMO energy levels, together with the electronic distribution on the main conducting backbone. Our exhaustive electrochemical investigation on a wide, systematic oligomer series has afforded interesting interpretative/predictive criteria concerning their electron properties and polymerization ability. Now we are focusing on the characterization of the conducting films obtained by electropolymerization from the above “genetically modified” oligomers, on both GC and ITO electrodes, combining cyclic voltammetry (CV) with electrochemical impedance spectroscopy (EIS) experiments. In particular, we will discuss combined CV and EIS results concerning the systematic series reported in Figure 1, to highlight and rationalize the effects of both the length and branching of the all-thiophene conjugated side chain (at constant modified core) and the nature of the modified core (at constant side chain) on the polymer functional properties, in terms of conductivity, mass transport, charge transfer and capacitance. [1] Benincori T., Capaccio M., De Angelis F., Falciola L., Muccini M., Mussini P.R., Ponti A., Toffanin S., Traldi P., Sannicolò F., Chem. Eur. J., 2008, 14, 459 [2] Benincori T., Bonometti V., De Angelis F., Falciola L., Muccini M., Mussini P.R., Pilati T., Rampinini G., Rizzo S., Toffanin S., Sannicolò F., Chem. Eur.J., 2010, 16, 9086

Conducting polymers from “genetically modified” spider-like oligothiophenes: a combined CV and EIS investigation / T. Benincori, A. Digennaro, G. Rampinini, S. Rizzo, F. Sannicolò, E. Giussani, V. Bonometti, P.R. Mussini. ((Intervento presentato al 7. convegno ElecNano4, 7. ECHEMS : Electrochemistry in Nano Structuration of Substrates and Energy : Joint Meeting tenutosi a Paris nel 2011.

Conducting polymers from “genetically modified” spider-like oligothiophenes: a combined CV and EIS investigation

F. Sannicolò;V. Bonometti
Penultimo
;
P.R. Mussini
Ultimo
2011

Abstract

In the last years we have been introducing the attractive family of spider-like oligothiophenes, achieving reliable rationalization criteria for their structure/properties relationships[1,2]. Now we are ‘genetically modifying’ them by inserting a non-thiophene conjugated core with tunable electronic properties, with the aim of modulating both absolute and relative positions of the HOMO and LUMO energy levels, together with the electronic distribution on the main conducting backbone. Our exhaustive electrochemical investigation on a wide, systematic oligomer series has afforded interesting interpretative/predictive criteria concerning their electron properties and polymerization ability. Now we are focusing on the characterization of the conducting films obtained by electropolymerization from the above “genetically modified” oligomers, on both GC and ITO electrodes, combining cyclic voltammetry (CV) with electrochemical impedance spectroscopy (EIS) experiments. In particular, we will discuss combined CV and EIS results concerning the systematic series reported in Figure 1, to highlight and rationalize the effects of both the length and branching of the all-thiophene conjugated side chain (at constant modified core) and the nature of the modified core (at constant side chain) on the polymer functional properties, in terms of conductivity, mass transport, charge transfer and capacitance. [1] Benincori T., Capaccio M., De Angelis F., Falciola L., Muccini M., Mussini P.R., Ponti A., Toffanin S., Traldi P., Sannicolò F., Chem. Eur. J., 2008, 14, 459 [2] Benincori T., Bonometti V., De Angelis F., Falciola L., Muccini M., Mussini P.R., Pilati T., Rampinini G., Rizzo S., Toffanin S., Sannicolò F., Chem. Eur.J., 2010, 16, 9086
2011
Settore CHIM/02 - Chimica Fisica
Settore CHIM/06 - Chimica Organica
Settore CHIM/01 - Chimica Analitica
French Chemical Society. Electrochemistry group
University Paris Diderot
Conducting polymers from “genetically modified” spider-like oligothiophenes: a combined CV and EIS investigation / T. Benincori, A. Digennaro, G. Rampinini, S. Rizzo, F. Sannicolò, E. Giussani, V. Bonometti, P.R. Mussini. ((Intervento presentato al 7. convegno ElecNano4, 7. ECHEMS : Electrochemistry in Nano Structuration of Substrates and Energy : Joint Meeting tenutosi a Paris nel 2011.
Conference Object
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/169844
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact