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One-Pot Electrografting of Mixed Monolayers with Controlled Composition
- Source :
- Journal of Physical Chemistry C, Journal of Physical Chemistry C, American Chemical Society, 2014, 118 (29), pp.15919-15928. 〈10.1021/jp5052003〉, Journal of Physical Chemistry C, American Chemical Society, 2014, 118 (29), pp.15919-15928. ⟨10.1021/jp5052003⟩, Journal of Physical Chemistry C, 2014, 118 (29), pp.15919-15928. ⟨10.1021/jp5052003⟩
- Publication Year :
- 2014
- Publisher :
- HAL CCSD, 2014.
-
Abstract
- International audience; Surface functionalization with ultrathin layers exhibiting a highly robust interface is of paramount importance for designing materials with tailored properties or operating functions, without modifying drastically the material’s bulk structures. A fine-tuning of the surface composition obtained, for instance from binary mixed layers, is also a key issue for developing high value-added applications like efficient sensors. Herein, binary mixtures of calix[4]arene-tetra-diazonium salts generated in situ from their corresponding calix[4]tetra-anilines are electrografted to form covalently bound monolayers onto substrates for yielding versatile functionalizable molecular platforms. Wettability studies, X-ray photoelectron spectroscopy analyses, and scanning electrochemical microscopy show the formation of homogeneous mixed monolayers. The distribution of the two calixarenes on the surface is directed by their relative molar fraction in the deposition solution. The strategy allows the control of the composition of mixed monolayers in a one-step approach. Postfunctionalization of the mixed layers with ferrocene centers is performed to exemplify the benefit of a dilution procedure when functional groups are introduced at the calix[4]arene small rim. This study highlights the potential of diazonium salt electrografting as a competitive alternative to chemisorption strategies such as self-assembled monolayers of alkyl thiols in the field of surface functionalization.
- Subjects :
- Materials science
[CHIM.ORGA]Chemical Sciences/Organic chemistry
Nanotechnology
Mole fraction
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Scanning electrochemical microscopy
General Energy
X-ray photoelectron spectroscopy
Covalent bond
[ CHIM.ORGA ] Chemical Sciences/Organic chemistry
Monolayer
Calixarene
Surface modification
Wetting
Physical and Theoretical Chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 19327447 and 19327455
- Database :
- OpenAIRE
- Journal :
- Journal of Physical Chemistry C, Journal of Physical Chemistry C, American Chemical Society, 2014, 118 (29), pp.15919-15928. 〈10.1021/jp5052003〉, Journal of Physical Chemistry C, American Chemical Society, 2014, 118 (29), pp.15919-15928. ⟨10.1021/jp5052003⟩, Journal of Physical Chemistry C, 2014, 118 (29), pp.15919-15928. ⟨10.1021/jp5052003⟩
- Accession number :
- edsair.doi.dedup.....a6b69bce5452e629b93dab6424585542