Engineering of NLO-Active Crystals

Crystal engineering is an elegant way for the design of noncentrosym-metric dipolar or octupolar materials featuring high macroscopic non-linearities. The acentric organisation in the crystal can be oriented by 

METAL-BASED QUADRATIC NONLINEAR OPTICAL MATERIALS 

Furthermore, metals present additional intrinsic properties, such as redox reversibility, magnetism and luminescence. It is, therefore, possible to take benefit from these peculiarities for the design of redox-controlled NLO switches as illustrated in this chapter or for the elaboration of materials combining two or more properties. This latter field of research is in its infancy but it is possible to anticipate many improvements in the future for the elaboration of multifunctional molecular material optimising simultaneously all the wonderful capacities of metals. 

Marcen, S. Montant, D. Molina-Ruiz, C. Rovira, J. Veciana, J.-F. Letard and 

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