Optical Second Harmonic Generation of (Dimethylamino)benzonitrile Molecules 
Incorporated in the Molecular Sieve AlP04-5

Marlow, Frank; Caro, J.; Werner, L.; Kornatowski, J.; Dähne, S.

doi:10.1021/j100145a029

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Optical Second Harmonic Generation of (Dimethylamino)benzonitrile Molecules Incorporated in the Molecular Sieve AlP0₄-5

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Marlow, Frank
Zentrum flir Heterogene Katalyse, Rudower Chaussee 5, D- 12489 Berlin-Adlershof, Germany;
Research Group Marlow, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Kornatowski, J.
Institut flir Kristallographie und Mineralogie, J.W .-G oethe- Universitiit, Senckenberganlage 30, 0-60325 FrankfurtIMain, Germany;
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Marlow, F., Caro, J., Werner, L., Kornatowski, J., & Dähne, S. (1993). Optical Second Harmonic Generation of (Dimethylamino)benzonitrile Molecules Incorporated in the Molecular Sieve AlP0₄-5. The Journal of Physical Chemistry A, 97(43), 11286-11290. doi:10.1021/j100145a029.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-220E-6

Abstract

For (dimethylamino)benzonitrile (DMABN) in the straight pores of the aluminophosphate molecular sieve A1P0₄-5, two components of the second harmonic generation (SHG) have been found. One component of the frequency-doubled radiation is polarized parallel to the length axis (z axis, Ø ₂ = 0°) of the crystal and exhibits the maximum intensity when the excitation beam has the same polarization. The second component, however, is polarized perpendicularly to the z axis (Ø₂ = 90°) and shows the maximum efficiency for mixed excitation (Ø = 45°) . Obviously, different components of the hyperpolarizability tensor contribute to the resulting SHG. The reason for the different tensor elements are the two close-lying lowest excited states in DMABN having transition dipole matrix elements perpendicular to each other. In contrast to molecular sieves loaded with p-nitroaniline which are able to mix waves of the same polarization only, for the DMABN-based materials a mixing of waves of different polarizations