Electrode surface modification by a spirobifluorene derivative. An XPS and electrochemical investigation

Francesca, Cecchet; Giulia, Fioravanti; Massimo, Marcaccio; Massimo, Margotti; Mattiello, Leonardo; Francesco, Paolucci; Stefania, Rapino; Petra, Rudolf

doi:10.1021/jp051786w

Ordered thin layers of a spirobifluorene derivative containing an amino group were formed by grafting them onto a self-assembled monolayer (SAM) of 11-mercaptoundecanoic acid (11-MUA) on gold. Either physical (H-bonding) or chemical bonding (activated by EDCI) was investigated. X-ray photoelectron spectroscopy and electrochemical impedance spectroscopy confirmed that both methods can be used to effectively graft 2-amino-9,9'-spirobifluorene molecules onto the SAM surface, giving high surface coverages, with a significantly higher packing in the case of chemisorbed films. EIS measurements also showed that the covalently bonded spirobifluorene SAMs act as an effective barrier to both ion penetration and heterogeneous electron transfer.

Electrode surface modification by a spirobifluorene derivative. An XPS and electrochemical investigation / Francesca, Cecchet; Giulia, Fioravanti; Massimo, Marcaccio; Massimo, Margotti; Mattiello, Leonardo; Francesco, Paolucci; Stefania, Rapino; Petra, Rudolf. - In: JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL. - ISSN 1520-6106. - STAMPA. - 109:39(2005), pp. 18427-18432. [10.1021/jp051786w]

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Titolo:	Electrode surface modification by a spirobifluorene derivative. An XPS and electrochemical investigation
Autori:	Francesca Cecchet Giulia Fioravanti Massimo Marcaccio Massimo Margotti MATTIELLO, Leonardo Francesco Paolucci Stefania Rapino Petra Rudolf mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2005
Rivista:	JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL
Citazione:	Electrode surface modification by a spirobifluorene derivative. An XPS and electrochemical investigation / Francesca, Cecchet; Giulia, Fioravanti; Massimo, Marcaccio; Massimo, Margotti; Mattiello, Leonardo; Francesco, Paolucci; Stefania, Rapino; Petra, Rudolf. - In: JOURNAL OF PHYSICAL CHEMISTRY. B, CONDENSED MATTER, MATERIALS, SURFACES, INTERFACES & BIOPHYSICAL. - ISSN 1520-6106. - STAMPA. - 109:39(2005), pp. 18427-18432. [10.1021/jp051786w]
Handle:	http://hdl.handle.net/11573/69366
Appartiene alla tipologia:	01a Articolo in rivista

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