2-docosylamino-5-nitropyridine

In order to use the advantages of Y-type multilayers of one single material one must employ an alternative concept for the arrangement of the molecules in order to obtain non-centrosymmetric LB films. We have recently introduced 2-docosylamino-5-nitropyridine (DCANP, Fig.5a), a substance that can easily be deposited onto hydrophobic substrates, yielding LB films of at least up to 1.2 pm thickness. 

G. Decher, B. Tieke, C. Bosshard, and P. Gunter, Optical Second-harmonic Generation in Langmuir-Blodgett Films of 2-Docosylamino-5-nitropyridine, T. Chem. Soc. Chem. Commun. 933 (1988). 

G. Decher, F. Klinkhammer, I.R. Peterson, and R. Steitz, Structural Investigations of Langmuir-Blodgett Films of 2-Docosylamino-5-nitropyridine, a New Type of Non-Centros)mmetric Multilayer for use in Non-Linear Optics, Thin Solid Films, in press. 

Bosshard, C., Kniipfer, M., Fldrsheimer, M., and Gunter, P., Nonlinear optical effects in 2-docosylamino-5-nitropyridine and other Langmuir-Blodgett films. Nonlinear Opt., 3, 215-231 (1992). 

Decher, G., Tieke, B., Bosshard, C., and Gunter, P., Optical second-harmonic generation in Langmuir-Blodgett films of 2-docosylamino-5-nitropyridine, J. Chem. Soc. Chem. Commun., 933, 1988. 

In this paper we report phase-matched second-harmonic generation in nonlinear optically active Langmuir-Blodgett (LB) film waveguides both by mode conversion and by use of the Cerenkov-type configuration. The experiments were done in 2-docosylamino-S-nitropyridine (DCANP) LB films (Hg.l). The synthesis, the optimum conditions for LB film transfer and the linear and nonlinear optical properties of this material have been described elsewhere [4-6]. 

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