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Polymerization of a Confined π‐System: Chemical Synthesis of Tetrahedral Amorphous Carbon Nanoballs from Graphitic Carbon Nanocapsules
Author(s) -
Chu C.C.,
Hwang G.L.,
Chiou J.W.,
Pong W.F.,
Lin C.L.,
Tsai C.Y.,
Lin H.M.,
Chang Y.C.,
Chang C.S.,
Hsu A. H.,
Huang W.L.,
Guo J.,
Chen P.H.,
Luh T.Y.
Publication year - 2005
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200500757
Subject(s) - nanocapsules , pyrolysis , materials science , carbon fibers , amorphous carbon , amorphous solid , polymerization , nanotechnology , tetrahedron , fullerene , chemical engineering , organic chemistry , crystallography , chemistry , polymer , nanoparticle , composite material , composite number , engineering
Aziridination of graphitic carbon nanocapsules (CNCs) followed by pyrolysis at 700 °C at ambient pressure yields tetrahedral amorphous carbon nanoballs (CNBs, see Figure). Because of the pyramidal character of some of the double bonds in the derivatized CNCs, a radical chain mechanism is proposed to rationalize the transformation of C sp 2 hybridization in the CNCs to C sp 3 hybridization in the CNBs.

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