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Australian Institute for Innovative Materials - Papers

2010

Surfaces

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Full-Text Articles in Physical Sciences and Mathematics

Wet Chemical Routes To The Assembly Of Organic Monolayers On Silicon Surfaces Via The Formation Of Si-C Bonds: Surface Preparation, Passivation And Functionalization, Simone Ciampi, Jason Brian Harper, J Justin Gooding Jan 2010

Wet Chemical Routes To The Assembly Of Organic Monolayers On Silicon Surfaces Via The Formation Of Si-C Bonds: Surface Preparation, Passivation And Functionalization, Simone Ciampi, Jason Brian Harper, J Justin Gooding

Australian Institute for Innovative Materials - Papers

Organic functionalization of non-oxidized silicon surfaces, while allowing for robust chemical passivation of the inorganic substrate, is intended and expected to broaden the chemical, physical and electronic properties of the currently most relevant technological material. Numerous protocols are now available for the preparation of Si-C, Si-O and Si-N bound layers. In particular, the covalent attachment of 1-alkenes and 1-alkynes onto hydride-terminated Si(100) and Si(111) has seen a wealth of research activity starting from the pioneering work of Linford and Chidsey (Alkyl monolayers covalently bonded to silicon surfaces, J. Am. Chem. Soc., 1993, 115(26), 12631-12632). This critical review aims to bring …


Silicon (100) Surfaces Modified By Osmium Bipyridine Complexes, Simone Ciampi, Leo M. H Lai, J Justin Gooding Jan 2010

Silicon (100) Surfaces Modified By Osmium Bipyridine Complexes, Simone Ciampi, Leo M. H Lai, J Justin Gooding

Australian Institute for Innovative Materials - Papers

Tethered osmium bypiridine-pyridine complexes [Os(bpy)2Clpy-R] were prepared from chemically modified non-oxidized silicon (100) electrodes. Pyridinyl groups at the distal end of self-assembled monolayers (SAMs)-modified silicon surfaces were used to coordinatively bind a representative osmium bipyridil complex precursor [Os(bpy)2Cl2]. SAMs presenting the putative osmium ligand were prepared by a step-wise procedure using click reactions of acetylene-terminated alkyl monolayers and isonicotinic acid azide derivatives. The redox properties of the modified Si(100) electrodes were characterized using cyclic voltammetry. 2010 IEEE.


Preparation Of Thiol-Terminated Monolayers On Silicon(100) Surfaces Using Thioacetyl-Protected Alkynethiol, Cheuk Chi Albert Ng, Guillaume Le Saux, Muthukumar Chockalingam, Simone Ciampi, Jason Brian Harper, J Justin Gooding Jan 2010

Preparation Of Thiol-Terminated Monolayers On Silicon(100) Surfaces Using Thioacetyl-Protected Alkynethiol, Cheuk Chi Albert Ng, Guillaume Le Saux, Muthukumar Chockalingam, Simone Ciampi, Jason Brian Harper, J Justin Gooding

Australian Institute for Innovative Materials - Papers

The attachment of acetyl-protected alkynethiol groups onto silicon(100) surfaces was achieved using a hydrosilylation methodology. Subsequent deprotection of the thiols using either hydrochloric acid or ammonia solution was investigated using X-ray photoelectron spectroscopy (XPS), and compared with similar reaction in solution. It was found that ammonia solution was more efficient than hydrochloric acid for the deprotection step. However, the deprotection was much less efficient on the surface than in solution. 2010 IEEE.