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Polytetrafluorethylene-Au as a substrate for surface-enhanced Raman spectroscopy.

Zvátora P, Rezanka P, Prokopec V, Siegel J, Svorčík V, Král V - Nanoscale Res Lett (2011)

Bottom Line: BFD was also used for preparation of sandwich structures with Au or Ag nanoparticles by two different procedures.Results showed that PTFE can be used for fabrication of SERS active substrate with easy handle properties at low cost.This substrate was sufficient for the measurement of SERS spectrum of BFD even at 10-8 mol/l concentration.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Analytical Chemistry, Institute of Chemical Technology Prague, Technická 5, 16628, Prague 6, Czech Republic. vladimir.kral@vscht.cz.

ABSTRACT
This study deals with preparation of substrates suitable for surface-enhanced Raman spectroscopy (SERS) applications by sputtering deposition of gold layer on the polytetrafluorethylene (PTFE) foil. Time of sputtering was investigated with respect to the surface properties. The ability of PTFE-Au substrates to enhance Raman signals was investigated by immobilization of biphenyl-4,4'-dithiol (BFD) from the solutions with various concentrations. BFD was also used for preparation of sandwich structures with Au or Ag nanoparticles by two different procedures. Results showed that PTFE can be used for fabrication of SERS active substrate with easy handle properties at low cost. This substrate was sufficient for the measurement of SERS spectrum of BFD even at 10-8 mol/l concentration.

No MeSH data available.


Related in: MedlinePlus

Dependence of the thickness of gold layer on time of sputtering (dash line) and resistance values of this gold layer (solid line).
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Figure 1: Dependence of the thickness of gold layer on time of sputtering (dash line) and resistance values of this gold layer (solid line).

Mentions: The gold layers were sputtered on PTFE foils (2 cm in diameter) with a thickness of 50 μm. The time of sputtering was from 10 to 150 s and deposition parameters were described elsewhere [20]. Microbalance was used for gravimetric determination of the amount of sputtered gold on polymeric substrate. Continuity of sputtered gold layer was determined by measuring of its resistance by the picoapermeter (Figure 1).


Polytetrafluorethylene-Au as a substrate for surface-enhanced Raman spectroscopy.

Zvátora P, Rezanka P, Prokopec V, Siegel J, Svorčík V, Král V - Nanoscale Res Lett (2011)

Dependence of the thickness of gold layer on time of sputtering (dash line) and resistance values of this gold layer (solid line).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211456&req=5

Figure 1: Dependence of the thickness of gold layer on time of sputtering (dash line) and resistance values of this gold layer (solid line).
Mentions: The gold layers were sputtered on PTFE foils (2 cm in diameter) with a thickness of 50 μm. The time of sputtering was from 10 to 150 s and deposition parameters were described elsewhere [20]. Microbalance was used for gravimetric determination of the amount of sputtered gold on polymeric substrate. Continuity of sputtered gold layer was determined by measuring of its resistance by the picoapermeter (Figure 1).

Bottom Line: BFD was also used for preparation of sandwich structures with Au or Ag nanoparticles by two different procedures.Results showed that PTFE can be used for fabrication of SERS active substrate with easy handle properties at low cost.This substrate was sufficient for the measurement of SERS spectrum of BFD even at 10-8 mol/l concentration.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Analytical Chemistry, Institute of Chemical Technology Prague, Technická 5, 16628, Prague 6, Czech Republic. vladimir.kral@vscht.cz.

ABSTRACT
This study deals with preparation of substrates suitable for surface-enhanced Raman spectroscopy (SERS) applications by sputtering deposition of gold layer on the polytetrafluorethylene (PTFE) foil. Time of sputtering was investigated with respect to the surface properties. The ability of PTFE-Au substrates to enhance Raman signals was investigated by immobilization of biphenyl-4,4'-dithiol (BFD) from the solutions with various concentrations. BFD was also used for preparation of sandwich structures with Au or Ag nanoparticles by two different procedures. Results showed that PTFE can be used for fabrication of SERS active substrate with easy handle properties at low cost. This substrate was sufficient for the measurement of SERS spectrum of BFD even at 10-8 mol/l concentration.

No MeSH data available.


Related in: MedlinePlus