Web Release Date: February 23,
Effect of H-Bonded Liquid Crystal Polymers on CdSe Quantum Dot Alignment within Nanocomposite
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A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninskii prospect, 119912 Moscow, Russia; Moscow State Pedagogical University, 29 Malaya Pirogovskaya, 119882 Moscow, Russia; and Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory, 119899 Moscow, Russia
Received September 3, 2007
Revised Manuscript Received December 4, 2007
Abstract:
Control over nanoparticle shape, liquid crystal (LC) polymer architecture, and the related mesophase structure has made possible the creation of new polymer/CdSe semiconductor nanoparticle composite materials. Surface modification of semiconductor quantum dot nanoparticles by hydrogen-bonded LC polymers resulted in the formation of uniform and coagulation-free bulk systems. The effect of the LC polymer on the alignment of nanoparticles within the composite was established by varying the polymer structure and the size of the quantum dots. The resultant composites represent a new class of nanomaterials in which quantum dots are aligned within the planes provided by the initial smectic layers separated by the periodically located polymer backbones.
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