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

Hensel, V.; Godt, Adelheid; Popovitz-Biro, R.; Cohen, H.; Jensen, T. R.; Kjaer, K.; Weissbuch, I.; Lifshitz, E.; Lahav, M.

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

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Godt, Adelheid
MPI for Polymer Research, Max Planck Society;

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Citation

Hensel, V., Godt, A., Popovitz-Biro, R., Cohen, H., Jensen, T. R., Kjaer, K., et al. (2002). Hybrid composites of monodisperse pi-conjugated rodlike organic compounds and semiconductor quantum particles. Chemistry-A European Journal, 8(6), 1413-1423.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-6653-D

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-phenyteneethynytene)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 H2S 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.