Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Molecular aligning or molecular orientating
Patent
1998-05-13
2000-07-18
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Molecular aligning or molecular orientating
B29C 3500
Patent
active
060903325
ABSTRACT:
Fused ring bridge, ring locked dyes that form thermally stable photorfractive compositions. The fused ring bridge structures are .pi.-conjugated bonds in benzene-, naphthalene- or anthracene-derived fused ring systems that connect donor and acceptor groups. The donor and acceptor groups contribute to a high molecular dipole moment and linear polarizability anisotropy. The polarization characteristics of the dye molecules are stabilized since the bonds in the fused ring bridge are not susceptible to rotation, reducing the opportunity for photoisomerization. The dyes are compatible with polymeric compositions, including thermoplastics. The dyes are electrically neutral but have charge transport, electronic and orientational properties such that upon illumination of a composition containing the dye, the dye facilitates refractive index modulation and a photorefractive effect that can be utilized advantageously in numerous applications such as in optical quality devices and biological imaging.
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Hendrickx Eric
Kippelen Bernard
Marder Seth R.
Peyghambarian Nasser
Volodin Boris
California Institute of Technology
Tentoni Leo B.
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