Synthesis of a Giant 222 Carbon Graphite Sheet

✍ Scribed by Christopher D. Simpson; J. Diedrich Brand; Alexander J. Berresheim; Laurence Przybilla; Hans Joachim Räder; Klaus Müllen

• Book ID: 101375342
• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 160 KB
• Volume: 8
• Category: Article
• ISSN: 0947-6539
• DOI: 10.1002/1521-3765(20020315)8:6<1424::aid-chem1424>3.0.co;2-z

✦ Synopsis

In this paper we present the synthesis and characterization of the so far largest polycyclic aromatic hydrocarbon (PAH), containing 222 carbon atoms or 37 separate benzene units. First a suitable three-dimensional oligophenylene precursor molecule is built up by a sequence of Diels ± Alder and cyclotrimerization reactions and then planar-ized in the final step by oxidative cyclodehydrogenation to the corresponding hexagonal PAH. Structural proof is based on isotopically resolved MAL-DI-TOF mass spectra and electronic characteristics are studied by UV/Vis spectroscopy.