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Carbon Spiral Helix: A Nanoarchitecture Derived from Monovacancy Defects in Graphene
Author(s) -
Gao Xingfa,
Liu Lili,
Irle Stephan,
Nagase Shigeru
Publication year - 2010
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200907347
Subject(s) - graphene , planar , materials science , spiral (railway) , annealing (glass) , carbon fibers , thermal , chemical physics , crystallography , condensed matter physics , nanotechnology , chemistry , physics , composite material , thermodynamics , composite number , mathematical analysis , computer graphics (images) , mathematics , computer science
The planar, magnetic isomer is the most stable form of interior graphene monovacancies, whereas the nonplanar, nonmagnetic spiro isomer is more stable for those closer to the edge of graphene sheets. On thermal annealing, interior monovacancies migrate towards the outermost periphery of graphene flakes. The spiro isomer is a suitable structural building block for the synthesis of carbon spiral helices (see picture).