Organic NonLinear Optical Polymers. 6. High Performance Materials Based on the Poly(p-phenylene) Backbone

This paper describes preliminary work exploring the feasibility of preparing high-performance NLO-materials based on the poly(p-phenylene) (PPP) backbone. Three new monomer/NLO-phores of the general formula: 4- RS02C6H4C(triple bonds)C(4-XC6H4) where R = 2,5-dichlorophenyl; 2a, X = H; 2b, X= OMe; 2c...

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Hauptverfasser:	Wright, Michael E, Toplikar, Edward G, Lackritz, Hilary S, Subrahmanyan, Suchitra
Format:	Report
Sprache:	eng
Schlagworte:	ASYMMETRY Backbone CATALYSTS Chi-squared COMPOSITE MATERIALS Corona poling CORONAS ELECTRIC FIELDS Electricity and Magnetism Guest-host High performance Homopolymerization MATERIALS MOLECULAR WEIGHT MONOMERS NICKEL NLO-Phores NONLINEAR OPTICS OLIGOMERS Organic Chemistry ORGANIC COMPOUNDS Physical Chemistry PMMA Polymer Chemistry POLYMERS POLYMETHYL METHACRYLATE POLYPHENYLENES PPP Backbone SECOND HARMONIC GENERATION SIGNALS STABILITY STOICHIOMETRY TEMPERATURE WEIGHT ZINC
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Zusammenfassung:	This paper describes preliminary work exploring the feasibility of preparing high-performance NLO-materials based on the poly(p-phenylene) (PPP) backbone. Three new monomer/NLO-phores of the general formula: 4- RS02C6H4C(triple bonds)C(4-XC6H4) where R = 2,5-dichlorophenyl; 2a, X = H; 2b, X= OMe; 2c, X= NMe2 were synthesized and then homopolymerized using catalytic nickel and stoichiometric zinc to produce the poly(p-phenylenes), 3a-c, respectively, as low molecular weight materials (M sub n = 1800-6000). Both NLO- phores (2b-c ) dispersed in PMMA displayed good SHG signal stability at ambient temperature (approx. 12% loss/100 h). The oligomeric materials dispersed in PMMA showed a lower magnitude of X(2) or no NLO signal. Attempts to induce dipolar asymmetry in the homopolymers 3b and 3c by corona poling were unsuccessful. NonLinear optical, Corona poling, High performance polymers, Polyphenylene. Prepared in cooperation with Purdue Univ., West Lafayette, IN.