Nano-rings with a handle – Synthesis of substituted cycloparaphenylenes

• Anne-Florence Tran-Van and
• Hermann A. Wegner

Beilstein J. Nanotechnol. 2014, 5, 1320–1333, doi:10.3762/bjnano.5.145

• beyond the parent unsubstituted oligo-phenylene structure. Keywords: aromatic compounds; carbon nanotubes; cycloparaphenylene; organic synthesis; Introduction Carbon is for organic chemists the essential building block. Besides graphite and diamond scientists have discovered new carbon allotropes such

• derivatives show interesting photophysical properties like long fluorescence life time and excimer emission. Therefore, it was of interest to see if these features appear in the CPPs containing pyrene units. The preparation of cycloparaphenylene-2,7-pyridylene (CPPyr) is described in Scheme 5. The synthesis