Phosphonate molecular layers on TiO2 surfaces

被引：9
作者：
Canepa, P. [1 ]
Solano, I. [2 ,3 ]
Uttiya, S. [2 ,3 ]
Gemme, G. [4 ]
Rolandi, R. [1 ]
Canepa, M. [2 ,3 ]
Cavalleri, O. [1 ]
机构：
[1] Univ Genoa, Dipartimento Fis, Via Dodecaneso 33, Genoa, Italy
[2] Univ Genoa, Dipartimento Fis, Via Dodecaneso 33, Genoa, Italy
[3] Univ Genoa, OPTMATLAB, Via Dodecaneso 33, Genoa, Italy
[4] INFN, Sez Genova, Via Dodecaneso 33, Genoa, Italy
来源：
16TH INTERNATIONAL CONFERENCE ON ORGANIZED MOLECULAR FILMS (ICOMF16-LB16) | 2017年 / 98卷
关键词：
SELF-ASSEMBLED MONOLAYERS; RAY PHOTOELECTRON-SPECTROSCOPY; RUTILE TIO2; TITANIUM; ACID; ADSORPTION; PHOSPHATE;
D O I：
10.1051/matecconf/20179803001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigated the deposition of (HO)(2)-PO-S-(CH2)(15)-COOH on TiO2. The phosphonate group has been chosen to serve as the anchoring moiety while the carboxylic group can be exploited for further coupling with antibacterial peptides. Native oxide-covered polished Ti samples were used as substrates for the molecular deposition. Previous to deposition, the substrates were plasma-cleaned in order to enrich their surfaces of hydroxyl groups, suitable for phosphonate coupling. The combined analysis of atomic force microscopy, X-ray photoemission spectroscopy and differential spectroscopic ellipsometry measurements indicates the formation of a submonolayer film made of irregular islands, one molecule thick.
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页数：4
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