A scanning tunnelling microscopy study of the formation and chemical activation of step defects on the basal plane of pyrolytic graphite.
Scanning tunnelling microscopy is used to monitor etching of the basal plane of highly orientated pyrolytic graphite by ozone, oxygen and nitric acid. These treatments are seen to produce numerous single and multilayer step defects. Subsequent modification of the graphite sheet edges flanking these cavities by cyanuric chloride, TiCl4 and other reagents is shown to activate the edges, thereby making them capable of covalently binding various molecules.
Morozov
V N
VN
Department of Chemistry, New York University, NY 10003.
Sherman
J
J
Kallenbach
N R
NR
Du
S M
SM
Seeman
N C
NC
D000179:Acrylates; D002234:Carbodiimides; D002244:Carbon; D004247:DNA; D006108:Graphite; D016252:Microscopy, Scanning Tunneling / Q000379:methods; D009113:Muramidase; D009566:Nitrates; D017942:Nitric Acid; D010100:Oxygen; D013499:Surface Properties; D014025:Titanium; D014227:Triazines
D000179:Acrylates; D002234:Carbodiimides; D009566:Nitrates; D014227:Triazines; C009139:pyrolytic carbon; D017942:Nitric Acid; C019309:cyanuric chloride; D002244:Carbon; D006108:Graphite; C026200:acryloyl chloride; C025096:titanium tetrachloride; D004247:DNA; D014025:Titanium; D009113:Muramidase; D010100:Oxygen