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Proceedings Paper

Multifunctional organic-inorganic nanocomposites for photonics
Author(s): Christopher S. Friend; M. Lal; Abani Biswas; Jeffrey Winiarz; Liangmin Zhang; Paras N. Prasad
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Paper Abstract

Multifunctional organic-inorganic nanocomposites are of considerable interest in photonics, optoelectronics, and biophotonics. This paper will focus on two topics. In the first part of the paper, we will focus on semiconductor nanocluster sensitized photoconductivity and photorefractivity. The results of photorefractivity studies in newly developed polymer composite PVK: TCP: CdS: NPP are presented. The composite contains charge transporting polymeric matrix of poly [N-vinylcarbazole] (PVK), thiocresol capped CdS photosensitizing nanoclusters, and second-order nonlinear optically active chromophore N-(4- nitrophenyl)-L-prolinol (NPP). Efficient plasticization of the host polymeric matrix was achieved with tricresyl phosphate (TCP). The electro-optic modulation, degenerate four-wave mixing (DFWM) diffraction efficiency and two-beam coupling properties of photorefraction were studied. In the second part of the paper, we investigate surface enhanced fluorescence in a silica matrix using dye in close association with silver nanoclusters. To optimize the photonic functions of 4-[N- (2-hydroxyethyl)-N-(methyl) amino phenyl]-4'-(6- hydroxyhexyl sulfonyl) stilbene (APSS) we have utilized the concept of plasmon enhancement, where resonance interaction with nanosize metal clusters enhances the various optical properties. Novel sol-gel processing has produced composites containing APSS and silver nanoclusters. The energy transfer between the plasmon resonance of the silver nanocluster and the excited state of APSS has been demonstrated.

Paper Details

Date Published: 6 July 1998
PDF: 8 pages
Proc. SPIE 3469, Organic-Inorganic Hybrid Materials for Photonics, (6 July 1998); doi: 10.1117/12.312909
Show Author Affiliations
Christopher S. Friend, SUNY/Buffalo (United States)
M. Lal, SUNY/Buffalo (United States)
Abani Biswas, SUNY/Buffalo (United States)
Jeffrey Winiarz, SUNY/Buffalo (United States)
Liangmin Zhang, SUNY/Buffalo (United States)
Paras N. Prasad, SUNY/Buffalo (United States)

Published in SPIE Proceedings Vol. 3469:
Organic-Inorganic Hybrid Materials for Photonics
Liliane G. Hubert-Pfalzgraf; S. Iraj Najafi, Editor(s)

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