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1453242 
Journal Article 
Optically active polyurethane@indium tin oxide nanocomposite: Preparation, characterization and study of infrared emissivity 
Yang, Y; Zhou, Y; Ge, J; Yang, X 
2012 
1 
Materials Research Bulletin
ISSN: 0025-5408 
47 
9 
2264-2269 
WOS:000309081400024 
Optically active polyurethane@indium tin oxide and racemic
polyurethane@indium tin oxide nanocomposites (LPU@ITO and RPU@ITO) were prepared by grafting the
organics onto the surfaces of modified ITO nanoparticles. LPU@ITO and RPU@ITO composites based on
the chiral and racemic tyrosine were characterized by FT-IR, UV-vis spectroscopy, X-ray
diffraction (XRD), SEM, TEM, and thermo-gravimetric analysis (TGA), and the infrared emissivity
values (8-14 mu m) were investigated in addition. The results indicated that the polyurethanes
had been successfully grafted onto the surfaces of ITO without destroying the crystalline
structure. Both composites possessed the lower infrared emissivity values than the bare ITO
nanoparticles, which indicated that the interfacial interaction had great effect on the infrared
emissivity. Furthermore, LPU@ITO based on the optically active polyurethane had the virtue of
regular secondary structure and more interfacial synergistic actions between organics and
inorganics, thus it exhibited lower infrared emissivity value than RPU@ITO based on the racemic
polyurethane. (C) 2012 Elsevier Ltd. All rights reserved. 
Composites; Polymers; Semiconductors; Optical properties 
IRIS
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