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Materials 2009, 2(3), 1193-1204; doi:10.3390/ma2031193

Optimization of Optical Properties of Polycarbonate Film with Thiol Gold-Nanoparticles

1 Nanoworld Institute – CIRSDNNOB and Biophysics Division, University of Genova, Corso Europa 30, 16132 Genoa, Italy 2 Fondazione El.B.A., Piazza SS Apostoli 66, 00100 Roma, Italy
* Author to whom correspondence should be addressed.
Received: 10 July 2009 / Revised: 28 August 2009 / Accepted: 31 August 2009 / Published: 2 September 2009
(This article belongs to the Special Issue Nanocomposites of Polymers and Inorganic Particles)
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A new nanostructured composite film based on thiol gold nanoparticles dispersed in polycarbonate and prepared by evaporating a solution of 1-dodecanthiol gold nanoparticles and polycarbonate was developed for applications as optical lenses. Lenses with superior mechanical properties, coloring and UV ray absorption and with the same transparency as the matrix were obtained. The supporting highly transparent polycarbonate matrix and the chloroform solution of thiol gold nanoparticles, 3 nm mean size, was mixed according to a doping protocol employing different concentrations of thiol gold nanoparticles vs. polycarbonate. The presence of nanoparticles in the polymer films was confirmed by the spectrophotometric detection of the characteristic absorbance marker peak at 540–580 nm. The nanostructured films obtained show a better coverage in the UV-vis range (250–450 nm) even at very low doping ratios, of the order of 1:1,000. These results offer a very promising approach towards the development of efficient nanostructured materials for applications to optical lenses.
Keywords: thiol gold-nanoparticles; polycarbonate; UV-vis plasmon absorption band thiol gold-nanoparticles; polycarbonate; UV-vis plasmon absorption band
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Larosa, C.; Stura, E.; Eggenhöffner, R.; Nicolini, C. Optimization of Optical Properties of Polycarbonate Film with Thiol Gold-Nanoparticles. Materials 2009, 2, 1193-1204.

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