Non-linear Optical Materials, New Polydiacetylene Synthesis

A kind of novel macromolecular diacetylenes with nonlinear optical conjugated group were synthesized, and their nonlinear optical properties were studied. The macromolecular diacetylenes were polymerized by UV light. The main contents of this dissertation are as following:1. In the dissertation, the principle, and technology of nonlinear optics, and the history and recent development of nonlinear optical materials were systematically summarized.2. Base on the theory of nonlinear optics, forteen compounds containing three objective monomers were synthesized. The structures of eleven compounds were characterized using FT-IR and 1H-NMR.3. Using copper(I) chloride as catalyst, a kind of novel macromolecular diacetylenes with nonlinear optical conjugated group was synthesized. These polymers were characterized using FT-IR, UV and ' H-NMR..4. The macromolecular diacetylenes were polymerized by UV light at 264 nm wavelength. Polydiacetylenes were analysised by infrared refractor (IR) andthe solubility.5. The optical limiting effects of these three monomers and macromolecular diacetylenes were studied. The experimental results revealed that they all possessed optical limiting properties. The relationship between nonlinear optical properties and molecular structures was discussed.