期刊
CHEMISTRY OF MATERIALS
卷 14, 期 12, 页码 5030-5036出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm0212010
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Poly(methyl methaerylate/2-methaeryloyletkyl methacrylate)-based copolymers of varying composition have been synthesized and characterized, Free-radical polymerization of hydroxyethyl methacrylate and methyl methaerylate over a range of monomer feed ratios gives an ideal random copolymer series which has been functionalized by further methaeryloylation of the pendant hydroxyl group. The resulting polymers have been cross-linked both thermally and by UV exposure, as evidenced by infrared and solid-state NMR spectroscopy. After thermal cross-linking the polymers remain stable up to 200 degreesC. Variation of polymer composition has allowed the refractive index to be tuned between 1.497 and 1.518, a range suitable for waveguide applications, and channel waveguides have been fabricated by UV writing. The propagation loss of these channel waveguides is less than 1 dB/cm at a range of near-IR wavelengths.
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