Covalently functionalized hexagonal boron nitride nanosheets by nitrene addition
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Sainsbury, T., Satti, A., May, P., O'Neill, A., Nicolosi, V., Gun'Ko, Y.K., Coleman, J.N., Covalently functionalized hexagonal boron nitride nanosheets by nitrene addition, Chemistry - A European Journal, 18, 35, 2012, 10808-10812Download Item:
Sainsbury Chen Eur J 2012.pdf (Published (author's copy) - Peer Reviewed) 461.9Kb
Abstract:
Exfoliated h-BN nanosheets were covalently functionalized via a one-step nitrene addition using azide precursor molecules. Functionalized h-BN nanosheets were found to exhibit markedly enhanced dispersability relative to pristine h-BN in a range of organic solvents. Extension of the functionalization methodology allowed the covalent attachment of polymer chains to the surface of h-BN nanosheets. Polymer nanocomposites were prepared using the molecularly-functionalized h-BN nanosheets within a polycarbonate (PC) matrix, while h-BN nanosheets functionalized with poly(bisphenol A-co-epichlorohydrin) (PBCE) chains were employed within a PBCE matrix. In both cases the mechanical properties were studied. Significant increases in moduli, strength and ductility of the functionalized h-BN nanocomposites indicated enhanced reinforcement of the functionalized h-BN filler materials over pristine h-BN. The implications of tuning the surface chemistry of exfoliated nanosheets exactly to the chemis-try of a host polymer matrix are considered.
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European Research Council (ERC)
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http://people.tcd.ie/colemajhttp://people.tcd.ie/sattia
http://people.tcd.ie/igounko
http://people.tcd.ie/mayp
http://people.tcd.ie/oneillar
http://people.tcd.ie/nicolov
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Author: SATTI, AMRO; COLEMAN, JONATHAN NESBIT; GOUNKO, IOURI; MAY, PETER; O'NEILL, ARLENE; NICOLOSI, VALERIA
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WileyType of material:
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Chemistry - A European Journal;18;
35;
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