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Polymer Nanocomposites of Surface-Functionalized Gold

Published online by Cambridge University Press:  10 February 2011

K. E. Gonsalves,
G. Carlson,
J. Kumar and
F. Aranda
K. E. Gonsalves
Affiliation:
Polymer Science Program, Institute of Materials ScienceDepartment of Chemistry,University of Connecticut. Storrs, CT 06269
G. Carlson
Affiliation:
Polymer Science Program, Institute of Materials Science
J. Kumar
Affiliation:
Center for Advanced Materials, Department of Physics,University of Massachusetts, Lowell, Lowell, MA 01854
F. Aranda
Affiliation:
Department of Physics, University of Massachusetts, 100 Morrissey Blvd., Boston, MA 02125
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Abstract

Nanometric gold particles were synthesized by a liquid/liquid phase-transfer reaction. Composites of these particles in polystyrene, poly(methyl methacrylate) and poly(phenylmethylsilane) were prepared at concentrations from 1.0 to 5.0 mg/ml were prepared, with no noticeable agglomeration of particles during processing. These materials showed a linear absorption peak at 530 nm, which is characteristic of nanosized gold. Highresolution electron microscopy measurement showed that the particle diameters were approximately 2.2 ± 1.3 nm. Degenerate four-wave mixing experiments at 532 nm yielded, on 10-micron films, a maximum value of 1.5 × 10−10 e.s.u. for the third-order nonlinear optical susceptibility.

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References

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