THE PHOSPHONATE ESTER GROUP IN NONLINEAR OPTICAL DONOR-ACCEPTOR BENZENES

Abstract The phosphonate ester group, typified by P(O)(OPh) 2 , is an effective π-electron acceptor group in donor-acceptor substituted benzenoid compounds for nonlinear optics, and has the added attractions of being easily functionalised for further fabrication into cross-linked films, and imparting transparency to simple derivatives.