Abstract
In recent years, iodonium salts emerged as a unique novel class of compounds for surface modification by electrografting. Herein, we demonstrated that 3,5-bis(trifluoromethyl)phenyl)iodonium salt (IS-(CF3)2) can be applied for the modification of surfaces via generation of aryl radicals through activation by UV light, without the addition of any photoinitiators. The thickness of the organic layer was found to be close to the size of an organic radical. The as-prepared structures were characterized by XPS, wettability, Raman spectroscopy and AFM measurements. The formation of close to monomolecular layer on the surface was proved by three independent methods (AFM, XPS, and ellipsometry). UV-generated aryl radicals can also be used for simple one-step surface patterning with organic functional groups. In our contribution, we developed a convenient and easy-to-handle approach for the grafting of modified patterns. The application of IS-(CF3)2 allows controlling the distribution of surface-modified area via the application of the lithographic mask. The proposed strategy offers advantages such as strong covalent bonding of aryl radical, easiness of experimental procedure in combination with the possibility to control surface architecture.
| Original language | English |
|---|---|
| Article number | 105211 |
| Journal | Progress in Organic Coatings |
| DOIs | |
| Publication status | Published - 1 Jan 2019 |
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Keywords
- Iodonium salts
- Organic layers
- Photocatalysis
- Surface modification
- Surface patterning
ASJC Scopus subject areas
- Chemical Engineering(all)
- Surfaces, Coatings and Films
- Organic Chemistry
- Materials Chemistry
Cite this
Chemical modification of gold surface via UV-generated aryl radicals derived 3,5-bis(trifluoromethyl)phenyl)iodonium salt. / Guselnikova, O.; Miliutina, E.; Elashnikov, R.; Burtsev, V.; Chehimi, M. M.; Svorcik, V.; Yusubov, M.; Lyutakov, O.; Postnikov, P.
In: Progress in Organic Coatings, 01.01.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Chemical modification of gold surface via UV-generated aryl radicals derived 3,5-bis(trifluoromethyl)phenyl)iodonium salt
AU - Guselnikova, O.
AU - Miliutina, E.
AU - Elashnikov, R.
AU - Burtsev, V.
AU - Chehimi, M. M.
AU - Svorcik, V.
AU - Yusubov, M.
AU - Lyutakov, O.
AU - Postnikov, P.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - In recent years, iodonium salts emerged as a unique novel class of compounds for surface modification by electrografting. Herein, we demonstrated that 3,5-bis(trifluoromethyl)phenyl)iodonium salt (IS-(CF3)2) can be applied for the modification of surfaces via generation of aryl radicals through activation by UV light, without the addition of any photoinitiators. The thickness of the organic layer was found to be close to the size of an organic radical. The as-prepared structures were characterized by XPS, wettability, Raman spectroscopy and AFM measurements. The formation of close to monomolecular layer on the surface was proved by three independent methods (AFM, XPS, and ellipsometry). UV-generated aryl radicals can also be used for simple one-step surface patterning with organic functional groups. In our contribution, we developed a convenient and easy-to-handle approach for the grafting of modified patterns. The application of IS-(CF3)2 allows controlling the distribution of surface-modified area via the application of the lithographic mask. The proposed strategy offers advantages such as strong covalent bonding of aryl radical, easiness of experimental procedure in combination with the possibility to control surface architecture.
AB - In recent years, iodonium salts emerged as a unique novel class of compounds for surface modification by electrografting. Herein, we demonstrated that 3,5-bis(trifluoromethyl)phenyl)iodonium salt (IS-(CF3)2) can be applied for the modification of surfaces via generation of aryl radicals through activation by UV light, without the addition of any photoinitiators. The thickness of the organic layer was found to be close to the size of an organic radical. The as-prepared structures were characterized by XPS, wettability, Raman spectroscopy and AFM measurements. The formation of close to monomolecular layer on the surface was proved by three independent methods (AFM, XPS, and ellipsometry). UV-generated aryl radicals can also be used for simple one-step surface patterning with organic functional groups. In our contribution, we developed a convenient and easy-to-handle approach for the grafting of modified patterns. The application of IS-(CF3)2 allows controlling the distribution of surface-modified area via the application of the lithographic mask. The proposed strategy offers advantages such as strong covalent bonding of aryl radical, easiness of experimental procedure in combination with the possibility to control surface architecture.
KW - Iodonium salts
KW - Organic layers
KW - Photocatalysis
KW - Surface modification
KW - Surface patterning
UR - http://www.scopus.com/inward/record.url?scp=85068529857&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85068529857&partnerID=8YFLogxK
U2 - 10.1016/j.porgcoat.2019.105211
DO - 10.1016/j.porgcoat.2019.105211
M3 - Article
JO - Progress in Organic Coatings
JF - Progress in Organic Coatings
SN - 0033-0655
M1 - 105211
ER -