Surface-Enhanced Raman Scattering of MEH-PPV on Gold and Silver Nanoparticles
The interaction of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) with Au or Ag nanospheres, Au nanostars, and Ag nanoprisms was investigated using surface-enhanced Raman scattering (SERS). The SERS investigation showed that adsorption of MEH-PPV strongly depends on the nature o...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Journal of Spectroscopy |
| Online Access: | http://dx.doi.org/10.1155/2018/6924758 |
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| author | Beatriz R. Moraes Nathalia S. Campos Alvaro C. C. Barra Celly M. S. Izumi |
| author_facet | Beatriz R. Moraes Nathalia S. Campos Alvaro C. C. Barra Celly M. S. Izumi |
| author_sort | Beatriz R. Moraes |
| collection | DOAJ |
| description | The interaction of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) with Au or Ag nanospheres, Au nanostars, and Ag nanoprisms was investigated using surface-enhanced Raman scattering (SERS). The SERS investigation showed that adsorption of MEH-PPV strongly depends on the nature of the nanoparticle surface. On gold nanostars that present a thick layer of capping polymer, SERS spectrum is only observed in relatively concentrated MEH-PPV solution (1 mmol L−1). On the other hand, Au and Ag nanospheres present SERS spectra down to 10−6 mol L−1 and no chemical interaction of MEH-PPV and metal surface is observed. The spectra of MEH-PPV on Ag nanoprisms with PVP as stabilizing agent suggest that the capping polymer induces a planar conformation of MEH-PPV and consequently an increase of conjugation length. These results give support for the application of MEH-PPV on optoelectronics in which interfacial effects are critical in the device efficiency and stability. |
| format | Article |
| id | doaj-art-0963b16abd064d63bcde787cdd20534c |
| institution | Kabale University |
| issn | 2314-4920 2314-4939 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Spectroscopy |
| spelling | doaj-art-0963b16abd064d63bcde787cdd20534c2025-02-03T06:48:36ZengWileyJournal of Spectroscopy2314-49202314-49392018-01-01201810.1155/2018/69247586924758Surface-Enhanced Raman Scattering of MEH-PPV on Gold and Silver NanoparticlesBeatriz R. Moraes0Nathalia S. Campos1Alvaro C. C. Barra2Celly M. S. Izumi3Laboratório de Nanoestruturas Plasmônicas, Departamento de Química, Universidade Federal de Juiz de Fora, 36036-330 Juiz de Fora, MG, BrazilLaboratório de Nanoestruturas Plasmônicas, Departamento de Química, Universidade Federal de Juiz de Fora, 36036-330 Juiz de Fora, MG, BrazilLaboratório de Nanoestruturas Plasmônicas, Departamento de Química, Universidade Federal de Juiz de Fora, 36036-330 Juiz de Fora, MG, BrazilLaboratório de Nanoestruturas Plasmônicas, Departamento de Química, Universidade Federal de Juiz de Fora, 36036-330 Juiz de Fora, MG, BrazilThe interaction of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) with Au or Ag nanospheres, Au nanostars, and Ag nanoprisms was investigated using surface-enhanced Raman scattering (SERS). The SERS investigation showed that adsorption of MEH-PPV strongly depends on the nature of the nanoparticle surface. On gold nanostars that present a thick layer of capping polymer, SERS spectrum is only observed in relatively concentrated MEH-PPV solution (1 mmol L−1). On the other hand, Au and Ag nanospheres present SERS spectra down to 10−6 mol L−1 and no chemical interaction of MEH-PPV and metal surface is observed. The spectra of MEH-PPV on Ag nanoprisms with PVP as stabilizing agent suggest that the capping polymer induces a planar conformation of MEH-PPV and consequently an increase of conjugation length. These results give support for the application of MEH-PPV on optoelectronics in which interfacial effects are critical in the device efficiency and stability.http://dx.doi.org/10.1155/2018/6924758 |
| spellingShingle | Beatriz R. Moraes Nathalia S. Campos Alvaro C. C. Barra Celly M. S. Izumi Surface-Enhanced Raman Scattering of MEH-PPV on Gold and Silver Nanoparticles Journal of Spectroscopy |
| title | Surface-Enhanced Raman Scattering of MEH-PPV on Gold and Silver Nanoparticles |
| title_full | Surface-Enhanced Raman Scattering of MEH-PPV on Gold and Silver Nanoparticles |
| title_fullStr | Surface-Enhanced Raman Scattering of MEH-PPV on Gold and Silver Nanoparticles |
| title_full_unstemmed | Surface-Enhanced Raman Scattering of MEH-PPV on Gold and Silver Nanoparticles |
| title_short | Surface-Enhanced Raman Scattering of MEH-PPV on Gold and Silver Nanoparticles |
| title_sort | surface enhanced raman scattering of meh ppv on gold and silver nanoparticles |
| url | http://dx.doi.org/10.1155/2018/6924758 |
| work_keys_str_mv | AT beatrizrmoraes surfaceenhancedramanscatteringofmehppvongoldandsilvernanoparticles AT nathaliascampos surfaceenhancedramanscatteringofmehppvongoldandsilvernanoparticles AT alvaroccbarra surfaceenhancedramanscatteringofmehppvongoldandsilvernanoparticles AT cellymsizumi surfaceenhancedramanscatteringofmehppvongoldandsilvernanoparticles |