Cb. Yoon et Hk. Shim, NEW 2ND-ORDER NONLINEAR-OPTICAL (NLO) EPOXY POLYMER TREATED BY SOL-GEL PROCESSING, Macromolecular chemistry and physics, 199(11), 1998, pp. 2433-2437
We have demonstrated a novel approach to achieve a stable second-order
NLO polymer by incorporating NLO moieties into a processable epoxy po
lymer and hardening with crosslinkable sol-gel technique. The crosslin
ked polymer showed high nonlinearity (d(33) = 41 pm/V) and better ther
mal stability compared to the prepolymer, which maintained its nonline
arity up to 100 degrees C without significant loss of NLO activity.