title: Molecular engineering of octupolar NLO molecules and materials based on bipyridyl metal complexes.
abstract: Coordination compounds are of particular interest for the design of new chromophores with large nonlinear optical (NLO) susceptibilities. They offer a wide range of metals with different oxidation states and ligands, which can give rise to tunable electronic properties. Metal ions are excellent templates to build 2D and 3D octupolar NLO-phores. Their associations with functionalized bipyridyl ligands give rise to octahedral and tetrahedral metal complexes with large first-order hyperpolarizabilities. The ability to functionalize these octupoles allows their incorporation into macromolecular architectures such as polymers and metallodendrimers, We also show in this Account two approaches to induce noncentrosymmetry at the macroscopic level, either by supramolecular organization or by the all optical poling procedure.
authors.affiliation: Institut de Chimie, UMR 6509 CNRS-Université de Rennes1, Campus de Beaulieu, 35042 Rennes Cedex, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Maury
authors.forename: Hubert
authors.initials: H
authors.lastname: Le Bozec
mesh_terms: D015082:2,2'-Dipyridyl / Q000737:chemistry*; D002616:Chemical Engineering; D007536:Isomerism; D008024:Ligands; D008027:Light; D008670:Metals / Q000737:chemistry*; D015394:Molecular Structure; D055095:Optics and Photonics; D009942:Organometallic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D011108:Polymers / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D015032:Zinc / Q000737:chemistry
chemical_list: D008024:Ligands; D008670:Metals; D009942:Organometallic Compounds; D011108:Polymers; D015082:2,2'-Dipyridyl; D015032:Zinc