A new nonlinear optical polymer of phenoxy resin containing 2-cyano-5-(4-methoxyphenyl)-2, 4-pentadienoate as a pendant group is synthesized. A high concentration (84%) of chromophores with a relatively high value of hyperpolarizability (50×10-30 esu) is obtained. The corona-poled polymer film shows hypochromic shift (Φ=0.084) and birefringence (Δn(ω)=0.9% and Δn(2ω)=1.6%). A second-order nonlinear coefficient of d 33=22 pm/V is achieved. The value decreases to 70% after 10 h but remains stable thereafter.
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