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Self-assembly of decoupled borazines on metal surfaces : the role of the peripheral groups
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Kalashnyk, Nataliya, Nagaswaran, Praveen G., Kervyn, Simon, Riello, Massimo, Moreton, Ben, Jones, T. S. (Tim S.), De Vita, Alessandro, Bonifazi, D. and Costantini, Giovanni (2014) Self-assembly of decoupled borazines on metal surfaces : the role of the peripheral groups. Chemistry : a European journal, 20 (37). pp. 11856-11862. doi:10.1002/chem.201402839 ISSN 0947-6539.
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Official URL: http://dx.doi.org/10.1002/chem.201402839
Abstract
Two borazine derivatives have been synthesised to investigate their self-assembly behaviour on Au(111) and Cu(111) surfaces by scanning tunnelling microscopy (STM) and theoretical simulations. Both borazines form extended 2D networks upon adsorption on both substrates at room temperature. Whereas the more compact triphenyl borazine 1 arranges into close-packed ordered molecular islands with an extremely low density of defects on both substrates, the tris(phenyl-4-phenylethynyl) derivative 2 assembles into porous molecular networks due to its longer lateral substituents. For both species, the steric hindrance between the phenyl and mesityl substituents results in an effective decoupling of the central borazine core from the surface. For borazine 1, this is enough to weaken the molecule–substrate interaction, so that the assemblies are only driven by attractive van der Waals intermolecular forces. For the longer and more flexible borazine 2, a stronger molecule–substrate interaction becomes possible through its peripheral substituents on the more reactive copper surface.
| Item Type: | Journal Article | ||||||||
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| Subjects: | Q Science > QD Chemistry | ||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||||
| Library of Congress Subject Headings (LCSH): | Inorganic cyclic compounds, Molecular dynamics, Self-assembly (Chemistry), Surface chemistry | ||||||||
| Journal or Publication Title: | Chemistry : a European journal | ||||||||
| Publisher: | Wiley ; V.C.H Verlag | ||||||||
| ISSN: | 0947-6539 | ||||||||
| Official Date: | 29 August 2014 | ||||||||
| Dates: |
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| Volume: | 20 | ||||||||
| Number: | 37 | ||||||||
| Number of Pages: | 7 | ||||||||
| Page Range: | pp. 11856-11862 | ||||||||
| DOI: | 10.1002/chem.201402839 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||
| Date of first compliant deposit: | 28 December 2015 | ||||||||
| Date of first compliant Open Access: | 28 December 2015 | ||||||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), European Research Council (ERC), Royal Society (Great Britain), University of Warwick, Fonds national de la recherche scientifique (Belgium) (FNRS), Belgium. Politique scientifique fédérale [Belgian State Science Policy Office] (BELSPO), Fondo per gli Investimenti della Ricerca di Base (FIRB), Birmingham Science City, Advantage West Midlands (AWM), European Regional Development Fund (ERDF), Research Councils UK (RCUK) | ||||||||
| Grant number: | EP/D000165/1 (EPSRC), VISUAL-MS (ERC), RG100917 (RS), COLORLANDS (ERC), 2.4.550.09 (FNRS), BELSPO-IAP 7/05 (BELSPO), RBFR10DAK6 (FIRB) |
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