TY - JOUR
T1 - UV/visible and infrared spectra of polyethylene/nanoscopic gold rod composite films
T2 - Effects of gold particle size, shape and orientation
AU - Al-Rawashdeh, Nathir
AU - Foss, Colby A.
N1 - Funding Information:
Acknowlegement is made to the donors of the Petroleum Research Fund, administered by the ACS, for partial support of this work. This work was also supported in part by the Lombardi Cancer Center Microscopy and Imaging Shared Resource Core Facility, U.S. Public Health Service Grant No. 1P30-CA-51008. The authors also wish to thank Ms. Marie Sandrock and Dr. MaoTheng Dai for electron microscopy assistance. We also thank Dr. J.-C. Valmallette for additional TEM assistance.
PY - 1997
Y1 - 1997
N2 - We have prepared nanoscopic gold rods of various radii and aspect ratios via anodic aluminum oxide - based template synthesis, and incorporated these particles into polyethylene films. The resulting composite films exhibit linear dichroic properties which result from a net orientation of the rods. The plasmon resonance absorption maxima occur at the longest wavelengths when the incident electric field is polarized along the direction of particle orientation, and are blue-shifted as the polarization angle is directed perpendicular to the orientation direction. These results are in general accord with Rayleigh scattering theory, though effective medium type approaches which account for inter-particle interaction yield a closer quantitative agreement. We will also discuss the application of these composite materials to surface-enhanced infrared spectroscopy.
AB - We have prepared nanoscopic gold rods of various radii and aspect ratios via anodic aluminum oxide - based template synthesis, and incorporated these particles into polyethylene films. The resulting composite films exhibit linear dichroic properties which result from a net orientation of the rods. The plasmon resonance absorption maxima occur at the longest wavelengths when the incident electric field is polarized along the direction of particle orientation, and are blue-shifted as the polarization angle is directed perpendicular to the orientation direction. These results are in general accord with Rayleigh scattering theory, though effective medium type approaches which account for inter-particle interaction yield a closer quantitative agreement. We will also discuss the application of these composite materials to surface-enhanced infrared spectroscopy.
UR - http://www.scopus.com/inward/record.url?scp=0011545296&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0011545296&partnerID=8YFLogxK
U2 - 10.1016/S0965-9773(97)00089-5
DO - 10.1016/S0965-9773(97)00089-5
M3 - Article
AN - SCOPUS:0011545296
SN - 0965-9773
VL - 9
SP - 383
EP - 386
JO - Nanostructured Materials
JF - Nanostructured Materials
IS - 1-8
ER -