Hybrid composites of monodisperse pi-conjugated rodlike organic compounds and semiconductor quantum particles

Chemistry : a European Journal
Volker HenselMeir Lahav

Abstract

Composite materials of quantum particles (Q-particles) arranged in layers within crystalline powders of pi-conjugated, rodlike dicarboxylic acids are reported. The synthesis of the composites, either as three-dimensional crystals or as thin films at the air-water interface, comprises a two-step process: 1) The preparation of the Cd salts 6 (Cd), 8 (Cd) or Pb salts 6 (Pb), 8 (Pb) of the oligo(p-phenyleneethynylene)dicarboxylic acids 6 (H), 8 (H), in which the metal ions are arranged in ribbons and are separated by the long axis of the organic molecules, as demonstrated by X-ray powder diffraction analysis of the solids and grazing incidence X-ray diffraction analysis of the films on water. 2) Topotactic solid/gas reaction of these salts with H(2)S to convert the metal ions into Q-particles of CdS or PbS embedded in the organic matrix that consists of the acids 6 (H) and 8 (H). These hybrid materials have been characterized by X-ray photoelectron spectroscopy and transmission electron microscopy.

References

Aug 15, 1996·Nature·A P AlivisatosP G Schultz
Nov 15, 2000·The Journal of Organic Chemistry·A GodtG Jeschke
Mar 12, 2004·Annual Review of Physical Chemistry·C P CollierJ R Heath

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Citations

Dec 6, 2002·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Marina SirotaEfrat Lifshitz
Oct 19, 2006·Chemical Communications : Chem Comm·Nami TokunagaKazuki Sada
Oct 20, 2006·Angewandte Chemie·Adelheid GodtGunnar Jeschke
Jul 14, 2010·Beilstein Journal of Organic Chemistry·Dhananjaya SahooAdelheid Godt
Jul 21, 2006·The Journal of Physical Chemistry. B·Ruth OsovskyEfrat Lifshitz

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