Synthesis of a giant 222 carbon graphite sheet

Simpson, C. D.; Brand, J. D.; Berresheim, A. J.; Przybilla, L.; Räder, Hans Joachim; Müllen, Klaus

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Synthesis of a giant 222 carbon graphite sheet

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Simpson, C. D.
MPI for Polymer Research, Max Planck Society;

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Przybilla, L.
MPI for Polymer Research, Max Planck Society;

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Räder, Hans Joachim
MPI for Polymer Research, Max Planck Society;

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Müllen, Klaus
MPI for Polymer Research, Max Planck Society;

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Citation

Simpson, C. D., Brand, J. D., Berresheim, A. J., Przybilla, L., Räder, H. J., & Müllen, K. (2002). Synthesis of a giant 222 carbon graphite sheet. Chemistry-A European Journal, 8(6), 1424-1429.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-6659-1

Abstract

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 planarized in the final step by oxidative cyclodehydrogenation to the corresponding hexagonal PAH. Structural proof is based on isotopically resolved MALDI-TOF mass spectra and electronic characteristics are studied by UV/Vis spectroscopy.