Please use this identifier to cite or link to this item:
https://doi.org/10.1021/la700305b
DC Field | Value | |
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dc.title | Binding of glycine and L-cysteine on Si(111)-7×7 | |
dc.contributor.author | Huang, J.Y. | |
dc.contributor.author | Ning, Y.S. | |
dc.contributor.author | Yong, K.S. | |
dc.contributor.author | Cai, Y.H. | |
dc.contributor.author | Tang, H.H. | |
dc.contributor.author | Shao, Y.X. | |
dc.contributor.author | Alshahateet, S.F. | |
dc.contributor.author | Sun, Y.M. | |
dc.contributor.author | Xu, G.Q. | |
dc.date.accessioned | 2014-10-16T08:21:17Z | |
dc.date.available | 2014-10-16T08:21:17Z | |
dc.date.issued | 2007-05-22 | |
dc.identifier.citation | Huang, J.Y., Ning, Y.S., Yong, K.S., Cai, Y.H., Tang, H.H., Shao, Y.X., Alshahateet, S.F., Sun, Y.M., Xu, G.Q. (2007-05-22). Binding of glycine and L-cysteine on Si(111)-7×7. Langmuir 23 (11) : 6218-6226. ScholarBank@NUS Repository. https://doi.org/10.1021/la700305b | |
dc.identifier.issn | 07437463 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/93176 | |
dc.description.abstract | The adsorption of glycine and L-cysteine on Si(111)-7×7 was investigated using high-resolution electron energy loss spectroscopy (HREELS) and X-ray photoelectron spectroscopy (XPS). The observation of the characteristic vibrational modes and electronic structures of NH 3 + and COO- groups for physisorbed glycine (L-cysteine) demonstrates the formation of zwitterionic species in multilayers. For chemisorbed molecules, the appearance of v(Si-H), v(Si-O), and v(C=O) and the absence of v(O-H) clearly indicate that glycine and L-cysteine dissociate to produce monodentate carboxylate adducts on Si(111)-7×7. XPS results further verified the coexistence of two chemisorption states for each amino acid, corresponding to a Si-NH-CH2-COO-Si [Si-NHCH(CH 2SH)COO-Si] species with new σ-linkages of Si-N and Si-O, and a NH2-CH2-COO-Si [NH2CH(CH2SH)COO-Si] product through the cleavage of the O-H bond, respectively. Glycine/Si(111)-7×7 and L-cysteine/Si(111)-7×7 can be viewed as model systems for further modification of Si surfaces with biological molecules. © 2007 American Chemical Society. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/la700305b | |
dc.source | Scopus | |
dc.type | Article | |
dc.contributor.department | CHEMISTRY | |
dc.description.doi | 10.1021/la700305b | |
dc.description.sourcetitle | Langmuir | |
dc.description.volume | 23 | |
dc.description.issue | 11 | |
dc.description.page | 6218-6226 | |
dc.description.coden | LANGD | |
dc.identifier.isiut | 000246456700053 | |
Appears in Collections: | Staff Publications |
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