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Journal of Materials Science
Published in: Journal of Materials Science 20/2014

01-10-2014

Preparation of optically active substituted polyacetylene@CdSe quantum dots composites and their application for low infrared emissivity

Authors: Xiaohai Bu, Yuming Zhou, Tao Zhang, Man He

Published in: Journal of Materials Science | Issue 20/2014

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Abstract

Optically active substituted polyacetylene@CdSe quantum dots (SPA@CdSe QDs) nanocomposites were fabricated by grafting helical SPA polymers onto the surface of semiconductor QDs through ester linkage. Optically active SPA polymer derived from chiral amino acids was copolymerized by a rhodium zwitterion catalyst and was evidently proved to adopt a predominately single-handed helical conformation. The SPA@QDs nanocomposites were characterized by Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, transmission electron microscopy, and thermogravimetric analysis. The results indicated that the organic SPA matrix exhibited an enhancement in thermal stability after the hybridization with CdSe QDs, while the blended QDs maintained their original crystalline structure during grafting. The infrared emissivity properties of the SPA@QDs nanocomposites at 8–14 μm were further investigated. The data demonstrated that the SPA@QDs-15 composite film possessed an infrared emissivity value of 0.501, which was much lower than pristine SPA and QDs. This might be attributed to the incorporation of optically active helical SPA and semiconductor QDs in a hybrid phase, which had great effect in enhancing their interfacial interactions.
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Appendix
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Metadata
Title
Preparation of optically active substituted polyacetylene@CdSe quantum dots composites and their application for low infrared emissivity
Authors
Xiaohai Bu
Yuming Zhou
Tao Zhang
Man He
Publication date
01-10-2014
Publisher
Springer US
Published in
Journal of Materials Science / Issue 20/2014
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-014-8421-y

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