0000000000214441

AUTHOR

Donald Dr Lupo

showing 2 related works from this author

Amphiphilic dyes for NLO in LB-films

1991

The influence of structural variations of phenyl-hydrazones and stilbazium salts on monolayer behaviour and second-harmonic generation in LB-monolayers is discussed. In contrast to the stilbazium salts the variation of the substituents of the phenylhydrazones does not influence the absorption maximum of the dyes in resonance enhancement of the nonlinearity. This allows a direct comparison of the substitution pattern on SHG.

Polymers and PlasticsChemistryOrganic ChemistryMonolayerAmphiphileInorganic chemistryMaterials ChemistryAbsorption (chemistry)Condensed Matter PhysicsPhotochemistryResonance (chemistry)Makromolekulare Chemie. Macromolecular Symposia
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Quadratic Nonlinear Behaviour of Various Langmuir-Blodgett Molecules

1989

The Langmuir-Blodgett (L-B) technique is well known as a method of building-up ordered arrays of organic molecules, and especially as a means of imposing a noncentrosymmetric structure from molecules that crystallize in a centrosymmetric space group(1–3). L-B films for use in quadratic nonlinear optics can be ordered in a statistically noncentrosymmetric lattice. The method involves the compression of a mono-layer of the organic molecule, spread on top of a water surface, into a two-dimensional solid, followed by the repeated dipping of the substrate to be coated into and out of the subphase. Monolayers may be deposited onto the substrate both on immersion and withdrawal, resulting in a cen…

CrystallographyChemistryPolarizabilityStereochemistryLattice (order)MonolayerNonlinear opticsMoleculeSecond-harmonic generationAcceptorLangmuir–Blodgett film
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