Investigation of chromophore orientation of 2-docosylamino-5-nitropyridine and derivatives by nonlinear optical techniques

Abstract 2-Docosylamino-5-nitropyridine (DCANP) is a strongly nonlinear optical molecule which forms high optical quality Langmuir-Blodgett (LB) films. DCANP shows higher nonlinearities as compared to its aliphatic chain derivatives (C 18 H 37 to C 26 H 53 ). To explain this we determined the orientation of the chromophores and the hyperpolarizabilities by means of nonlinear optical techniques.