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Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering
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| Zeitschriftentitel: | Small |
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| Personen und Körperschaften: | , , |
| In: | Small, 6, 2010, 21, S. 2443-2447 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
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| Schlagwörter: |
| author_facet |
Fathima, Shahitha Jahir Hussain Paul, Jinu Valiyaveettil, Suresh Fathima, Shahitha Jahir Hussain Paul, Jinu Valiyaveettil, Suresh |
|---|---|
| author |
Fathima, Shahitha Jahir Hussain Paul, Jinu Valiyaveettil, Suresh |
| spellingShingle |
Fathima, Shahitha Jahir Hussain Paul, Jinu Valiyaveettil, Suresh Small Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering Biomaterials Biotechnology General Materials Science General Chemistry |
| author_sort |
fathima, shahitha jahir hussain |
| spelling |
Fathima, Shahitha Jahir Hussain Paul, Jinu Valiyaveettil, Suresh 1613-6810 1613-6829 Wiley Biomaterials Biotechnology General Materials Science General Chemistry http://dx.doi.org/10.1002/smll.201000342 <jats:title>Abstract</jats:title><jats:p>The fabrication and characterization of nanostructured fibrous gold mats having high specific surface areas is reported. Freestanding porous films of 6–20‐μm thickness and density 0.43 ± 0.02 g cm<jats:sup>3</jats:sup> are prepared using e‐beam evaporation of gold on an electrospun nanoporous polymer template and subsequent removal of the template polymer in a suitable solvent. Structural characterization using electron microscopy techniques shows a nanofiber diameter in the range of 300–6000 nm, and the size of the nanochannels on the fiber surface is ≈200–350 nm. Such surface structuring is achieved through fast evaporation of organic solvent and phase separation of polymers during the electrospinning process. The wedge thickness varies from a few nanometers to a few tens of nanometers. The freestanding films possess good mechanical integrity and robustness. The calculated Young’s modulus based on the slope in the elastic region is ≈114 MPa and gives an ultimate breaking strength of 0.7–0.8 MPa at a percentage elongation of 1.5–2.0%. X‐ray diffraction and transmission electron microscopy measurements demonstrate the formation of polycrystalline gold nanostructures. Electrical characterization performed on these gold nanotubes reveals pure metallic behavior. Raman spectroscopic characterization of the fibrous membrane is performed using crystal violet (CV) adsorbed on it. Well‐defined spectral peaks are obtainable at concentrations as low as 10<jats:sup>−7</jats:sup> <jats:sc>M</jats:sc> of CV, which did not give spectral signals at this low concentration on its own.</jats:p> Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering Small |
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10.1002/smll.201000342 |
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Biologie Technik |
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Wiley, 2010 |
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Wiley, 2010 |
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1613-6810 1613-6829 |
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| title |
Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering |
| title_unstemmed |
Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering |
| title_full |
Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering |
| title_fullStr |
Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering |
| title_full_unstemmed |
Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering |
| title_short |
Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering |
| title_sort |
surface‐structured gold‐nanotube mats: fabrication, characterization, and application in surface‐enhanced raman scattering |
| topic |
Biomaterials Biotechnology General Materials Science General Chemistry |
| url |
http://dx.doi.org/10.1002/smll.201000342 |
| publishDate |
2010 |
| physical |
2443-2447 |
| description |
<jats:title>Abstract</jats:title><jats:p>The fabrication and characterization of nanostructured fibrous gold mats having high specific surface areas is reported. Freestanding porous films of 6–20‐μm thickness and density 0.43 ± 0.02 g cm<jats:sup>3</jats:sup> are prepared using e‐beam evaporation of gold on an electrospun nanoporous polymer template and subsequent removal of the template polymer in a suitable solvent. Structural characterization using electron microscopy techniques shows a nanofiber diameter in the range of 300–6000 nm, and the size of the nanochannels on the fiber surface is ≈200–350 nm. Such surface structuring is achieved through fast evaporation of organic solvent and phase separation of polymers during the electrospinning process. The wedge thickness varies from a few nanometers to a few tens of nanometers. The freestanding films possess good mechanical integrity and robustness. The calculated Young’s modulus based on the slope in the elastic region is ≈114 MPa and gives an ultimate breaking strength of 0.7–0.8 MPa at a percentage elongation of 1.5–2.0%. X‐ray diffraction and transmission electron microscopy measurements demonstrate the formation of polycrystalline gold nanostructures. Electrical characterization performed on these gold nanotubes reveals pure metallic behavior. Raman spectroscopic characterization of the fibrous membrane is performed using crystal violet (CV) adsorbed on it. Well‐defined spectral peaks are obtainable at concentrations as low as 10<jats:sup>−7</jats:sup> <jats:sc>M</jats:sc> of CV, which did not give spectral signals at this low concentration on its own.</jats:p> |
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| author | Fathima, Shahitha Jahir Hussain, Paul, Jinu, Valiyaveettil, Suresh |
| author_facet | Fathima, Shahitha Jahir Hussain, Paul, Jinu, Valiyaveettil, Suresh, Fathima, Shahitha Jahir Hussain, Paul, Jinu, Valiyaveettil, Suresh |
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| description | <jats:title>Abstract</jats:title><jats:p>The fabrication and characterization of nanostructured fibrous gold mats having high specific surface areas is reported. Freestanding porous films of 6–20‐μm thickness and density 0.43 ± 0.02 g cm<jats:sup>3</jats:sup> are prepared using e‐beam evaporation of gold on an electrospun nanoporous polymer template and subsequent removal of the template polymer in a suitable solvent. Structural characterization using electron microscopy techniques shows a nanofiber diameter in the range of 300–6000 nm, and the size of the nanochannels on the fiber surface is ≈200–350 nm. Such surface structuring is achieved through fast evaporation of organic solvent and phase separation of polymers during the electrospinning process. The wedge thickness varies from a few nanometers to a few tens of nanometers. The freestanding films possess good mechanical integrity and robustness. The calculated Young’s modulus based on the slope in the elastic region is ≈114 MPa and gives an ultimate breaking strength of 0.7–0.8 MPa at a percentage elongation of 1.5–2.0%. X‐ray diffraction and transmission electron microscopy measurements demonstrate the formation of polycrystalline gold nanostructures. Electrical characterization performed on these gold nanotubes reveals pure metallic behavior. Raman spectroscopic characterization of the fibrous membrane is performed using crystal violet (CV) adsorbed on it. Well‐defined spectral peaks are obtainable at concentrations as low as 10<jats:sup>−7</jats:sup> <jats:sc>M</jats:sc> of CV, which did not give spectral signals at this low concentration on its own.</jats:p> |
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| imprint_str_mv | Wiley, 2010 |
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| language | English |
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| spelling | Fathima, Shahitha Jahir Hussain Paul, Jinu Valiyaveettil, Suresh 1613-6810 1613-6829 Wiley Biomaterials Biotechnology General Materials Science General Chemistry http://dx.doi.org/10.1002/smll.201000342 <jats:title>Abstract</jats:title><jats:p>The fabrication and characterization of nanostructured fibrous gold mats having high specific surface areas is reported. Freestanding porous films of 6–20‐μm thickness and density 0.43 ± 0.02 g cm<jats:sup>3</jats:sup> are prepared using e‐beam evaporation of gold on an electrospun nanoporous polymer template and subsequent removal of the template polymer in a suitable solvent. Structural characterization using electron microscopy techniques shows a nanofiber diameter in the range of 300–6000 nm, and the size of the nanochannels on the fiber surface is ≈200–350 nm. Such surface structuring is achieved through fast evaporation of organic solvent and phase separation of polymers during the electrospinning process. The wedge thickness varies from a few nanometers to a few tens of nanometers. The freestanding films possess good mechanical integrity and robustness. The calculated Young’s modulus based on the slope in the elastic region is ≈114 MPa and gives an ultimate breaking strength of 0.7–0.8 MPa at a percentage elongation of 1.5–2.0%. X‐ray diffraction and transmission electron microscopy measurements demonstrate the formation of polycrystalline gold nanostructures. Electrical characterization performed on these gold nanotubes reveals pure metallic behavior. Raman spectroscopic characterization of the fibrous membrane is performed using crystal violet (CV) adsorbed on it. Well‐defined spectral peaks are obtainable at concentrations as low as 10<jats:sup>−7</jats:sup> <jats:sc>M</jats:sc> of CV, which did not give spectral signals at this low concentration on its own.</jats:p> Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering Small |
| spellingShingle | Fathima, Shahitha Jahir Hussain, Paul, Jinu, Valiyaveettil, Suresh, Small, Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering, Biomaterials, Biotechnology, General Materials Science, General Chemistry |
| title | Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering |
| title_full | Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering |
| title_fullStr | Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering |
| title_full_unstemmed | Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering |
| title_short | Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering |
| title_sort | surface‐structured gold‐nanotube mats: fabrication, characterization, and application in surface‐enhanced raman scattering |
| title_unstemmed | Surface‐Structured Gold‐Nanotube Mats: Fabrication, Characterization, and Application in Surface‐Enhanced Raman Scattering |
| topic | Biomaterials, Biotechnology, General Materials Science, General Chemistry |
| url | http://dx.doi.org/10.1002/smll.201000342 |