Cited by 171Origins and Evolution of LifePolymer Surface Interaction StudiesAdsorption, diffusion, and thermodynamic properties of materials

The DOI matches its Crossref record; 35 of the 35 references it cites were found in a registry or an index.

Adsorption and Thermal Condensation Mechanisms of Amino Acids on Oxide Supports. 1. Glycine on Silica

Abstract

Glycine was adsorbed on the surface of a well-defined silica from aqueous solutions of variable concentrations and pHs. The adsorbed molecules were characterized using middle-IR and UV-vis-NIR spectroscopies. Except at the lowest pH (2.0), they were predominantly present on the surface as zwitterions. Two successive deposition mechanisms were evidenced with increasing glycine concentration. At low concentrations, glycine is specifically adsorbed on silica surface sites, probably through its NH3+ moiety. The pH dependence suggests that these sites may be silanolate groups (approximately equal to Si-O-). At higher concentrations, specific adsorption sites are saturated and surface-induced precipitation of beta-glycine is observed. The thermal reactivity of adsorbed/deposited glycine was then investigated by thermogravimetric analysis, in situ diffuse reflectance IR spectroscopy, and thermoprogrammed desorption coupled with mass spectrometry. Adsorbed glycine molecules react to form peptide bonds at a temperature considerably lower than that for bulk crystalline alpha-glycine. The main reaction product is the cyclic dimer diketopiperazine, with no evidence of the linear dimer. The activation mechanism is not diffusionally limited; the formation of "surface acyls", previously proposed for related systems, has not been evidenced here. These findings are of relevance for the evaluation of prebiotic peptide synthesis scenarios.

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Crossref · 10.1021/la035336b

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Citations

Cites

Research works printed but not linked: 14

  1. Kalra S., 2000, Biochem. Biophys., 37, 346
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  6. Basiuk V. A., 1992, Synthesis, 449, 451
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  8. TeVrucht M. L. E., 1991, Talanta, 38, 849
  9. Ihs A., 1990, J. Colloid Interface Sci., 140, 206
  10. Cheam T. C., 1984, Spectrochim. Acta, 40, 501
  11. Burneau, A.; Gallas, J.P. InThe surface properties of silicas; Legrand, A. P., Ed.; J. Wiley & Sons: Chichester, 1998; pp 147−234.
  12. Stepanian S. G., 1998, J. Phys. Chem. A, 102, 1054
  13. Soria E., 1999, Surf. Sci., 433, 548
  14. Evans, D. F.; Wennerström, H. InThe colloidal domain:Wherephysics, chemistry and biology meet; Wiley-VCH: New York, 1999; pp 131−143.

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Metadata

Authors
Meng, M., Stievano, L., & Lambert, J.-F.
Affiliations
Centre National de la Recherche Scientifique (FR)
Corresponding author
Lambert, Jean-François
Venue
Langmuir
Published
2004-01-08
Volume
20
Issue
3
Pages
914-923
ISSN
  • 0743-7463 (ISSN-L)
  • 1520-5827
OpenAlex
W1977476426
Cited by
169
References
35
Citations by year
2026: 1 · 2025: 3 · 2024: 4 · 2023: 4 · 2022: 10 · 2021: 11 · 2020: 8 · 2019: 4 · 2018: 7 · 2017: 9 · 2016: 9 · 2015: 10 · 2014: 9 · 2013: 17 · 2012: 10
FWCI
4.72
Type
journal article
Language
en
Open access
closed
Locations
  • Langmuir (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
  • Physical Sciences › Materials Science › Surfaces, Coatings and Films › Polymer Surface Interaction Studies
  • Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Adsorption, diffusion, and thermodynamic properties of materials
Keywords
glycine adsorption, silica, amino acid adsorption, zwitterion, thermal condensation, peptide bond formation, diketopiperazines, prebiotic peptide synthesis, pH dependence, adsorption mechanism
MeSH terms
Adsorption, Amino Acids, Quaternary Ammonium Compounds, Glycine, Hydrogen-Ion Concentration, Oxides, Peptides, Silanes, Silicon Dioxide, Spectrum Analysis, Temperature

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