View in EDS

Oligo(ethylene glycol) monolayers by silanization of silicon wafers: Real nature and stability.

Saved in:
Bibliographic Details
Title: Oligo(ethylene glycol) monolayers by silanization of silicon wafers: Real nature and stability.
Authors: Dekeyser, C. M.1,2, Buron, C. C.3, Evoy, K. Mc1, Dupont-Gillain, C. C.1, Marchand-Brynaert, J.2, Jonas, A. M.3, Rouxhet, P. G.1 paul.rouxhet@uclouvain.be
Source: Journal of Colloid & Interface Science. Aug2008, Vol. 324 Issue 1/2, p118-126. 9p.
Subjects: Silicon, Ethylene glycol, Monomolecular films, Photoelectron spectroscopy
Abstract: Grafting silicon wafers with CH3O—(CH2—CH2—O)n—C3H6-trimethoxysilane and -trichlorosilane ( n = 6 to 9) was performed in different conditions (solvent, reaction time, washing) in order to select procedures compatible with the design of nanostructured surfaces for biomaterial applications, using electron-beam lithography. After a first screening by principal component analysis (PCA), the X-ray photoelectron spectroscopy (XPS) data were analyzed by plotting the carbon to oxygen molar ratio vs the molar ratio of carbon singly bound to oxygen [C—O]over carbon bound only to carbon and hydrogen [C—(C,H)]. This was found to be a convenient method for discarding samples containing free polymerized silane. Such excess occurred as a result of insufficient washing or unsuitable solvent for the reaction (ether), as confirmed by AFM and thickness measured by X-ray reflectometry. Angle resolved XPS analysis indicated that the grafted silane layer had a 1–2 nm thickness and was covered by a thin layer of adventitious contaminant. As a result, the surface chemical composition obtained covered a broad range (O/C of 0.4 to 1.1; C—O/C(C,H) of 2.5 to 6.5); variations could not be related to the nature of the silane reagent and no significant difference was found between hexane and toluene as solvent for the reaction. The grafted silane layer was not stable upon incubation during 24 h in phosphate buffered saline (PBS) at 37 °C, which mimics biological environments. As a consequence, the grafted wafers did not show protein repellent properties. This alteration was not observed at room temperature. XPS analysis demonstrated that silane layer detachment was due to a hydrolysis within the SiO2 layer initially present at the wafer surface. [Copyright &y& Elsevier]
Copyright of Journal of Colloid & Interface Science is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 32738413
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Oligo(ethylene glycol) monolayers by silanization of silicon wafers: Real nature and stability.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Dekeyser%2C+C%2E+M%2E%22">Dekeyser, C. M.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Buron%2C+C%2E+C%2E%22">Buron, C. C.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Evoy%2C+K%2E+Mc%22">Evoy, K. Mc</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Dupont-Gillain%2C+C%2E+C%2E%22">Dupont-Gillain, C. C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Marchand-Brynaert%2C+J%2E%22">Marchand-Brynaert, J.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Jonas%2C+A%2E+M%2E%22">Jonas, A. M.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Rouxhet%2C+P%2E+G%2E%22">Rouxhet, P. G.</searchLink><relatesTo>1</relatesTo><i> paul.rouxhet@uclouvain.be</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+Colloid+%26+Interface+Science%22">Journal of Colloid & Interface Science</searchLink>. Aug2008, Vol. 324 Issue 1/2, p118-126. 9p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Silicon%22">Silicon</searchLink><br /><searchLink fieldCode="DE" term="%22Ethylene+glycol%22">Ethylene glycol</searchLink><br /><searchLink fieldCode="DE" term="%22Monomolecular+films%22">Monomolecular films</searchLink><br /><searchLink fieldCode="DE" term="%22Photoelectron+spectroscopy%22">Photoelectron spectroscopy</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Grafting silicon wafers with CH3O—(CH2—CH2—O)n—C3H6-trimethoxysilane and -trichlorosilane ( n = 6 to 9) was performed in different conditions (solvent, reaction time, washing) in order to select procedures compatible with the design of nanostructured surfaces for biomaterial applications, using electron-beam lithography. After a first screening by principal component analysis (PCA), the X-ray photoelectron spectroscopy (XPS) data were analyzed by plotting the carbon to oxygen molar ratio vs the molar ratio of carbon singly bound to oxygen [C—O]over carbon bound only to carbon and hydrogen [C—(C,H)]. This was found to be a convenient method for discarding samples containing free polymerized silane. Such excess occurred as a result of insufficient washing or unsuitable solvent for the reaction (ether), as confirmed by AFM and thickness measured by X-ray reflectometry. Angle resolved XPS analysis indicated that the grafted silane layer had a 1–2 nm thickness and was covered by a thin layer of adventitious contaminant. As a result, the surface chemical composition obtained covered a broad range (O/C of 0.4 to 1.1; C—O/C(C,H) of 2.5 to 6.5); variations could not be related to the nature of the silane reagent and no significant difference was found between hexane and toluene as solvent for the reaction. The grafted silane layer was not stable upon incubation during 24 h in phosphate buffered saline (PBS) at 37 °C, which mimics biological environments. As a consequence, the grafted wafers did not show protein repellent properties. This alteration was not observed at room temperature. XPS analysis demonstrated that silane layer detachment was due to a hydrolysis within the SiO2 layer initially present at the wafer surface. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Colloid & Interface Science is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=32738413
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jcis.2008.05.002
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 9
        StartPage: 118
    Subjects:
      – SubjectFull: Silicon
        Type: general
      – SubjectFull: Ethylene glycol
        Type: general
      – SubjectFull: Monomolecular films
        Type: general
      – SubjectFull: Photoelectron spectroscopy
        Type: general
    Titles:
      – TitleFull: Oligo(ethylene glycol) monolayers by silanization of silicon wafers: Real nature and stability.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Dekeyser, C. M.
      – PersonEntity:
          Name:
            NameFull: Buron, C. C.
      – PersonEntity:
          Name:
            NameFull: Evoy, K. Mc
      – PersonEntity:
          Name:
            NameFull: Dupont-Gillain, C. C.
      – PersonEntity:
          Name:
            NameFull: Marchand-Brynaert, J.
      – PersonEntity:
          Name:
            NameFull: Jonas, A. M.
      – PersonEntity:
          Name:
            NameFull: Rouxhet, P. G.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 08
              Text: Aug2008
              Type: published
              Y: 2008
          Identifiers:
            – Type: issn-print
              Value: 00219797
          Numbering:
            – Type: volume
              Value: 324
            – Type: issue
              Value: 1/2
          Titles:
            – TitleFull: Journal of Colloid & Interface Science
              Type: main
ResultId 1