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Molecular and morphological characterization of bis benzimidazo perylene films and surface-enhanced phenomena

Volpati, D. LU ; Job, A. E. ; Aroca, R. F. and Constantino, C. J.L. (2008) In Journal of Physical Chemistry B 112(13). p.3894-3902
Abstract

Thin solid films of bis benzimidazo perylene (AzoPTCD) were fabricated using physical vapor deposition (PVD) technique. Thermal stability and integrity of the AzoPTCD PVD films during the fabrication (∼400 °C at 10 -6 Torr) were monitored by Raman scattering. Complementary thermogravimetric results showed that thermal degradation of AzoPTCD occurs at 675 °C. The growth of the PVD films was established through UV - vis absorption spectroscopy, and the surface morphology was surveyed by atomic force microscopy (AFM) as a function of the mass thickness. The AzoPTCD molecular organization in these PVD films was determined using the selection rules of infrared absorption spectroscopy (transmission and reflection-absorption modes).... (More)

Thin solid films of bis benzimidazo perylene (AzoPTCD) were fabricated using physical vapor deposition (PVD) technique. Thermal stability and integrity of the AzoPTCD PVD films during the fabrication (∼400 °C at 10 -6 Torr) were monitored by Raman scattering. Complementary thermogravimetric results showed that thermal degradation of AzoPTCD occurs at 675 °C. The growth of the PVD films was established through UV - vis absorption spectroscopy, and the surface morphology was surveyed by atomic force microscopy (AFM) as a function of the mass thickness. The AzoPTCD molecular organization in these PVD films was determined using the selection rules of infrared absorption spectroscopy (transmission and reflection-absorption modes). Despite the molecular packing, X-ray diffraction revealed that the PVD films are amorphous. Theoretical calculations (density functional theory, B3LYP) were used to assign the vibrational modes in the infrared and Raman spectra. Metallic nanostructures, able to sustain localized surface plasmons (LSP) were used to achieve surface-enhanced resonance Raman scattering (SERRS) and surface-enhanced fluorescence (SEF).

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author
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publishing date
type
Contribution to journal
publication status
published
in
Journal of Physical Chemistry B
volume
112
issue
13
pages
9 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:47149086780
ISSN
1520-6106
DOI
10.1021/jp077588h
language
English
LU publication?
no
id
2518d6ea-596f-4ef1-8fa8-4196bdfbd649
date added to LUP
2019-05-17 14:40:13
date last changed
2022-01-31 20:16:54
@article{2518d6ea-596f-4ef1-8fa8-4196bdfbd649,
  abstract     = {{<p>Thin solid films of bis benzimidazo perylene (AzoPTCD) were fabricated using physical vapor deposition (PVD) technique. Thermal stability and integrity of the AzoPTCD PVD films during the fabrication (∼400 °C at 10 <sup>-6</sup> Torr) were monitored by Raman scattering. Complementary thermogravimetric results showed that thermal degradation of AzoPTCD occurs at 675 °C. The growth of the PVD films was established through UV - vis absorption spectroscopy, and the surface morphology was surveyed by atomic force microscopy (AFM) as a function of the mass thickness. The AzoPTCD molecular organization in these PVD films was determined using the selection rules of infrared absorption spectroscopy (transmission and reflection-absorption modes). Despite the molecular packing, X-ray diffraction revealed that the PVD films are amorphous. Theoretical calculations (density functional theory, B3LYP) were used to assign the vibrational modes in the infrared and Raman spectra. Metallic nanostructures, able to sustain localized surface plasmons (LSP) were used to achieve surface-enhanced resonance Raman scattering (SERRS) and surface-enhanced fluorescence (SEF).</p>}},
  author       = {{Volpati, D. and Job, A. E. and Aroca, R. F. and Constantino, C. J.L.}},
  issn         = {{1520-6106}},
  language     = {{eng}},
  month        = {{04}},
  number       = {{13}},
  pages        = {{3894--3902}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Journal of Physical Chemistry B}},
  title        = {{Molecular and morphological characterization of bis benzimidazo perylene films and surface-enhanced phenomena}},
  url          = {{http://dx.doi.org/10.1021/jp077588h}},
  doi          = {{10.1021/jp077588h}},
  volume       = {{112}},
  year         = {{2008}},
}