title: Synthesis and nonlinear optical properties of a peripherally functionalized hyperbranched polymer by DR1 chromophores.
abstract: The first peripheral postfunctionalization of a hyperbranched polyimide by nonlinear optic chromophores (DR1 derivative) was achieved using two different routes. The first one consists in the esterification of the terminal carboxylic acid groups, whereas the second is based on copper-catalyzed Huisgen reaction of the terminal propargylic ester groups. The resulting polymers display good solubility in classical organic solvents and good filmability because thick films can be prepared (up to 2.7 mum). The second-order nonlinear optical properties were measured by SHG at 1064 nm and we show that these hyperbranched polymers exhibit good poling efficiency and good thermal stability since the electro-optic activity remains stable up to 130 degrees C. These results illustrate the potential of hyperbranched polymers to host second-order nonlinear optical chromophores to replace dendrimers or classical linear polymers generally used in this area.
authors.affiliation: CNRS, Chimie et Interdisciplinarite: Synthese, Analyse, Modelisation (CEISAM), UMR CNRS 6230, Universite de Nantes, 2 rue de la Houssiniere, BP 92208, 44322 Nantes Cedex 3, France.
authors.forename: Annabelle
authors.initials: A
authors.lastname: Scarpaci
authors.forename: Errol
authors.initials: E
authors.lastname: Blart
authors.forename: Véronique
authors.initials: V
authors.lastname: Montembault
authors.forename: Laurent
authors.initials: L
authors.lastname: Fontaine
authors.forename: Vincent
authors.initials: V
authors.lastname: Rodriguez
authors.forename: Fabrice
authors.initials: F
authors.lastname: Odobel
mesh_terms: D000042:Absorption; D001386:Azides; D001672:Biocompatible Materials / Q000737:chemistry; D050091:Dendrimers / Q000737:chemistry*; D004563:Electrochemistry / Q000379:methods; D009682:Magnetic Resonance Spectroscopy; D008956:Models, Chemical; D008970:Molecular Weight; D055095:Optics and Photonics; D011108:Polymers / Q000737:chemistry*; D012995:Solubility; D012997:Solvents / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature
chemical_list: D001386:Azides; D001672:Biocompatible Materials; D050091:Dendrimers; D011108:Polymers; D012997:Solvents