title: Enhanced third-order nonlinear optical properties in dendrimer-metal nanocomposites.
abstract: Nonlinear optical (NLO) and time-resolved fluorescence spectroscopic measurements of dendrimer-metal nanocomposites (DNCs) are reported. Third-order NLO effects were investigated by degenerate four-wave mixing (DFWM) measurements for DNCs and DNCs incorporated into thin polymeric films. The results show an enhancement of the third-order nonlinear susceptibility for the chromophore-functionalized dendrimer-metal nanocomposites. Investigations of the mechanism of the enhanced NLO effect suggested a strong contribution because of the metal's local field. These results show the potential usefulness of dendrimer-metal nanocomposites for nonlinear optical effects and biophotonic applications.
authors.affiliation: Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, USA.
authors.forename: Ying
authors.initials: Y
authors.lastname: Wang
authors.forename: Xinbing
authors.initials: X
authors.lastname: Xie
authors.forename: Theodore
authors.initials: T
authors.lastname: Goodson
mesh_terms: D004307:Dose-Response Relationship, Radiation; D004563:Electrochemistry / Q000295:instrumentation / Q000379:methods*; D004581:Electronics; D008027:Light; D008422:Materials Testing; D008670:Metals / Q000737:chemistry* / Q000528:radiation effects; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects; D036103:Nanotechnology / Q000295:instrumentation / Q000379:methods*; D017711:Nonlinear Dynamics; D055095:Optics and Photonics; D010777:Photochemistry / Q000295:instrumentation / Q000379:methods*; D011108:Polymers / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D008670:Metals; D011108:Polymers