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Optical properties of guest-host nanocomposite materials
Li I.L.2; Li Z.M.1; Tang Z.K.1; Ruan S.C.2; Zhao J.H.2
2006-03-31
Source PublicationProceedings of SPIE - The International Society for Optical Engineering
Volume6029
AbstractAluminophosphate AlPO -5 single crystal is a kind of nanoporous material. Its framework consists of alternative tetrahedra of A1O and PO which form an array of opened one-dimensional channels and pack in hexagonal structure as two-dimensional photonic crystal. The inner diameter of the channel is 0.73 nm. Since the AlPO -5 single crystal is electrically insulated and thermally stable up to 900°C, it is an ideal host to incorporate nano-structured species. These guest-host materials are potentially new functional materials in electric transport, optic switches, nonlinear optics and lasers. We have synthesized two different types of guest-host systems, including selenium and carbon nanotube in the channels of AlPO -5 crystals. Polarized absorption spectra and polarized Raman spectra have been investigated. Both crystals behave as good polarizers with high absorption for the light polarized parallel to the c-axis of the crystal. This anisotropic optical property implies that ordered species with a large aspect ratio are formed in the channel. The polarization angle dependence of the Raman intensity indicates that the enclosed species are highly oriented in the channels with their dipole transition moment mostly along the channels. These guest-host systems are useful for applications of optical filters or polarizers.
KeywordAbsorption Guest-host system Polarization Raman
DOI10.1117/12.667663
URLView the original
Language英語
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Document TypeConference paper
CollectionUniversity of Macau
Affiliation1.Hong Kong University of Science and Technology
2.Shenzhen University
Recommended Citation
GB/T 7714
Li I.L.,Li Z.M.,Tang Z.K.,et al. Optical properties of guest-host nanocomposite materials[C],2006.
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