Structure and nonlinear optical properties of Langmuir-Blodgett films from p-nitroaniline derivatives

Abstract

Stearyl derivatives of DAN, MAP and NPP yield LB films with second-harmonic generation (SHG) coefficients measured as 7, 100 and 20 × 10−9 esu. Molecular dynamics modelling predicts molecular tilts of about 20°, decreasing slightly in succesive layers. Model calculations show how molecular tilt affects film optical response.