Electrode surface modification by a spirobifluorene derivative: An XPS and Electrochemical Investigation

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

doi:https://doi.org/10.1021/jp051786w

Electrode surface modification by a spirobifluorene derivative: An XPS and Electrochemical Investigation

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

Namur Research Institute for Life Sciences

Résultats de recherche: Contribution à un journal/une revue › Article › Revue par des pairs

Résumé

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 EDCl) 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.

langue originale	Anglais
Pages (de - à)	18427-18432
Nombre de pages	6
journal	The Journal of Physical Chemistry B
Volume	109
Numéro de publication	39
Les DOIs	https://doi.org/10.1021/jp051786w
Etat de la publication	Publié - 1 oct. 2005

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title = "Electrode surface modification by a spirobifluorene derivative: An XPS and Electrochemical Investigation",

abstract = "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 EDCl) was investigated. X-ray photoelectron spectroscopy and electrochemical impedance spectroscopy confirmed that both methods can be used to effectively graft 2-amino-9,9{\textquoteleft}-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. ",

author = "Francesca Cecchet and Giulia Fioravanti and Massimo Marcaccio and Massimo Margotti and Leonardo Mattiello and Francesco Paolucci and Stefania Rapino and Petra Rudolf",

year = "2005",

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doi = "https://doi.org/10.1021/jp051786w",

language = "English",

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T1 - Electrode surface modification by a spirobifluorene derivative

T2 - An XPS and Electrochemical Investigation

AU - Cecchet, Francesca

AU - Fioravanti, Giulia

AU - Marcaccio, Massimo

AU - Margotti, Massimo

AU - Mattiello, Leonardo

AU - Paolucci, Francesco

AU - Rapino, Stefania

AU - Rudolf, Petra

PY - 2005/10/1

Y1 - 2005/10/1

N2 - 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 EDCl) 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.

AB - 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 EDCl) 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.

U2 - https://doi.org/10.1021/jp051786w

DO - https://doi.org/10.1021/jp051786w

M3 - Article

SN - 1520-5207

VL - 109

SP - 18427

EP - 18432

JO - The Journal of Physical Chemistry B

JF - The Journal of Physical Chemistry B

IS - 39

ER -

Electrode surface modification by a spirobifluorene derivative: An XPS and Electrochemical Investigation

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