Carborane-thiol-silver interactions. A comparative study of the molecular protection of silver surfaces

0349146 - ÚACH 2011 RIV CH eng J - Journal Article
Baše, Tomáš - Bastl, Zdeněk - Havránek, Vladimír - Lang, Kamil - Bould, Jonathan - Londesborough, Michael Geoffrey Stephen - Macháček, Jan - Plešek, Jaromír
Carborane-thiol-silver interactions. A comparative study of the molecular protection of silver surfaces.
Surface and Coatings Technology. Roč. 204, 16-17 (2010), s. 2639-2646. ISSN 0257-8972
R&D Projects: GA MŠMT LC523; GA MŠMT(CZ) LC06041; GA AV ČR IAA400320901; GA AV ČR(CZ) KAN400480701; GA AV ČR KAN100400702
Institutional research plan: CEZ:AV0Z40320502; CEZ:AV0Z40400503; CEZ:AV0Z10480505
Keywords : silver * self assembly * corrosion * nanostructure
Subject RIV: CA - Inorganic Chemistry
Impact factor: 2.135, year: 2010

The interaction between flat silver surfaces and carboranethiol derivatives, and its relevance regarding the molecular protection of silver against corrosion by hydrogen sulphide, are reported here. A comparison of the protective qualities of four carboranethiols (1-HS-1,2-C2B10H11, 1,2-(HS)(2)-1,2-C2B10H10, 9,12-(HS)(2)-1,2-C2B10H10, and 1,12-(HS)(2)-1,2-C2B10H10) with several organic thiols (1-butanethiol, 1-octanethiol, 1-dodecanethiol, benzene-1,2-dithiol, benzenethiol, and sodium 2-mercaptoethanesulphonate) is provided. All these derivatives are categorized according to their capacity to inhibit the interaction of silver with H2S in the presence of water molecules in the gas phase. We found that significantly better molecular protection for silver surfaces is afforded by the carboranethiol derivatives, and, of these, 9,12-(HS)(2)-1,2-C2B10H10 proved to be particularly effective.
Permanent Link: http://hdl.handle.net/11104/0189461