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Title: Surface functionalization of Ni(111) with acrylate monolayers
Authors: Yeo, B.-S. 
Chen, Z.-H.
Sim, W.-S. 
Issue Date: 1-Apr-2003
Citation: Yeo, B.-S., Chen, Z.-H., Sim, W.-S. (2003-04-01). Surface functionalization of Ni(111) with acrylate monolayers. Langmuir 19 (7) : 2787-2794. ScholarBank@NUS Repository.
Abstract: The adsorption and reactivity of acrylic acid on clean and preoxidized Ni(111) have been examined under ultrahigh vacuum (UHV) conditions using reflection absorption infrared spectroscopy (RAIRS). On clean Ni(111), acrylic acid molecules that adsorb as dimers at 140 K subsequently decompose between 240 and 310 K into surface-bound acrylate species and n1(O)-acrylic acid monomers attached to the surface through the lone pair electrons of the carbonyl O atom. On Ni(111)-p(2 × 2)-O, facile deprotonation of acrylic acid occurs at 240 K to yield upright symmetrically bound acrylate species. Increasing the coverage results in tilting of the acrylate species as a consequence of steric hindrance and repulsive dipolar interactions. An alternative synthetic route to stable surface-bound acrylate monolayers has also been achieved through O-induced nucleophilic substitution of acryloyl chloride on Ni(111)-p(2 × 2)-O.
Source Title: Langmuir
ISSN: 07437463
DOI: 10.1021/la0266942
Appears in Collections:Staff Publications

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