The rapid formation of functional monolayers on silicon under mild conditions
We report on an exceedingly mild chemical functionalization of hydrogen-terminated Si(100) with unactivated and unprotected bifunctional α,ω-dialkynes. Monolayer formation occurs rapidly in the dark, and at room temperature, from dilute solutions of an aromatic-conjugated acetylene. The method addre...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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R S C Publications
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/27452 |
| _version_ | 1848752267767840768 |
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| author | Ciampi, S. Luais, E. James, M. Choudhury, M. Darwish, Nadim Gooding, J. |
| author_facet | Ciampi, S. Luais, E. James, M. Choudhury, M. Darwish, Nadim Gooding, J. |
| author_sort | Ciampi, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We report on an exceedingly mild chemical functionalization of hydrogen-terminated Si(100) with unactivated and unprotected bifunctional α,ω-dialkynes. Monolayer formation occurs rapidly in the dark, and at room temperature, from dilute solutions of an aromatic-conjugated acetylene. The method addresses the poor reactivity of p-type substrates under mild conditions. We suggest the importance of several factors, including an optimal orientation for electron transfer between the adsorbate and the Si surface, conjugation of the acetylenic function with a π-system, as well as the choice of a solvent system that favors electron transfer and screens Coulombic interactions between surface holes and electrons. The passivated Si(100) electrode is amenable to further functionalization and shown to be a viable model system for redox studies at non-oxide semiconductor electrodes in aqueous solutions. |
| first_indexed | 2025-11-14T08:05:55Z |
| format | Journal Article |
| id | curtin-20.500.11937-27452 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:05:55Z |
| publishDate | 2014 |
| publisher | R S C Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-274522017-09-13T15:08:55Z The rapid formation of functional monolayers on silicon under mild conditions Ciampi, S. Luais, E. James, M. Choudhury, M. Darwish, Nadim Gooding, J. We report on an exceedingly mild chemical functionalization of hydrogen-terminated Si(100) with unactivated and unprotected bifunctional α,ω-dialkynes. Monolayer formation occurs rapidly in the dark, and at room temperature, from dilute solutions of an aromatic-conjugated acetylene. The method addresses the poor reactivity of p-type substrates under mild conditions. We suggest the importance of several factors, including an optimal orientation for electron transfer between the adsorbate and the Si surface, conjugation of the acetylenic function with a π-system, as well as the choice of a solvent system that favors electron transfer and screens Coulombic interactions between surface holes and electrons. The passivated Si(100) electrode is amenable to further functionalization and shown to be a viable model system for redox studies at non-oxide semiconductor electrodes in aqueous solutions. 2014 Journal Article http://hdl.handle.net/20.500.11937/27452 10.1039/c4cp00396a R S C Publications fulltext |
| spellingShingle | Ciampi, S. Luais, E. James, M. Choudhury, M. Darwish, Nadim Gooding, J. The rapid formation of functional monolayers on silicon under mild conditions |
| title | The rapid formation of functional monolayers on silicon under mild conditions |
| title_full | The rapid formation of functional monolayers on silicon under mild conditions |
| title_fullStr | The rapid formation of functional monolayers on silicon under mild conditions |
| title_full_unstemmed | The rapid formation of functional monolayers on silicon under mild conditions |
| title_short | The rapid formation of functional monolayers on silicon under mild conditions |
| title_sort | rapid formation of functional monolayers on silicon under mild conditions |
| url | http://hdl.handle.net/20.500.11937/27452 |