Adsorption of Hexylferrocene Phosphonic Acid on Indium−Tin Oxide Electrodes. Evidence of Strong Interchain Interactions in Ferrocene Self-Assembled Monolayers
1
Istituto CNR per l' Energetica e le Interfasi, C.o Stati Uniti 4, 35127 Padova, Italy
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2
Istituto CNR di Scienze e Tecnologie Molecolari, via C.Golgi 19, 20133 Milano, Italy
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Publication type: Journal Article
Publication date: 2003-09-30
scimago Q1
wos Q2
SJR: 0.763
CiteScore: 6.0
Impact factor: 3.9
ISSN: 07437463, 15205827
Spectroscopy
Electrochemistry
Condensed Matter Physics
General Materials Science
Surfaces and Interfaces
Abstract
Hexylferrocene phosphonic acid was adsorbed on indium−tin oxide (ITO) and amino-primed ITO electrodes from ethanol. The obtained monolayers are stable in acetonitrile where cyclic voltammetry shows the formation of domains of self-interacting and free ferrocene molecules. Distinct phases are observed on bare ITO, whereas a single Frumkin isotherm is obtained on amino-primed ITO. Dilution experiments with alkylphosphonic acids CnH2n+1PO(OH)2 (n = 3, 6, and 12) have shown that only the dodecyl chain may compete with the hexylferrocene chain, which remains 50 times more strongly bound to the surface. The free energy of self-interaction of the ferrocene moieties in the layers is ca. 40 kJ mol-1; that is, it is equivalent to that of a 15 carbon atom alkyl chain. Lateral interactions among hexylferrocene and dodecyl chains form isolated domains of the components, ruling out a real dilution of ferrocenes to single isolated molecules.
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GOST
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Vercelli B. et al. Adsorption of Hexylferrocene Phosphonic Acid on Indium−Tin Oxide Electrodes. Evidence of Strong Interchain Interactions in Ferrocene Self-Assembled Monolayers // Langmuir. 2003. Vol. 19. No. 22. pp. 9351-9356.
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Vercelli B., Zotti G., Schiavon G., Zecchin S., Berlin A. Adsorption of Hexylferrocene Phosphonic Acid on Indium−Tin Oxide Electrodes. Evidence of Strong Interchain Interactions in Ferrocene Self-Assembled Monolayers // Langmuir. 2003. Vol. 19. No. 22. pp. 9351-9356.
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RIS
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TY - JOUR
DO - 10.1021/la030150y
UR - https://doi.org/10.1021/la030150y
TI - Adsorption of Hexylferrocene Phosphonic Acid on Indium−Tin Oxide Electrodes. Evidence of Strong Interchain Interactions in Ferrocene Self-Assembled Monolayers
T2 - Langmuir
AU - Vercelli, B
AU - Zotti, Gianni
AU - Schiavon, Gilberto
AU - Zecchin, Sandro
AU - Berlin, Anna
PY - 2003
DA - 2003/09/30
PB - American Chemical Society (ACS)
SP - 9351-9356
IS - 22
VL - 19
SN - 0743-7463
SN - 1520-5827
ER -
Cite this
BibTex (up to 50 authors)
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@article{2003_Vercelli,
author = {B Vercelli and Gianni Zotti and Gilberto Schiavon and Sandro Zecchin and Anna Berlin},
title = {Adsorption of Hexylferrocene Phosphonic Acid on Indium−Tin Oxide Electrodes. Evidence of Strong Interchain Interactions in Ferrocene Self-Assembled Monolayers},
journal = {Langmuir},
year = {2003},
volume = {19},
publisher = {American Chemical Society (ACS)},
month = {sep},
url = {https://doi.org/10.1021/la030150y},
number = {22},
pages = {9351--9356},
doi = {10.1021/la030150y}
}
Cite this
MLA
Copy
Vercelli, B., et al. “Adsorption of Hexylferrocene Phosphonic Acid on Indium−Tin Oxide Electrodes. Evidence of Strong Interchain Interactions in Ferrocene Self-Assembled Monolayers.” Langmuir, vol. 19, no. 22, Sep. 2003, pp. 9351-9356. https://doi.org/10.1021/la030150y.