title: Synthesis and properties of cycloparaphenylene-2,7-pyrenylene: a pyrene-containing carbon nanoring.
abstract: The first synthesis of a pyrene-containing carbon nanoring, cyclo[12]paraphenylene[2]-2,7-pyrenylene ([12,2]CPPyr), is described. Through a sequence of stepwise macrocyclization using Pd and Ni catalysts followed by aromatization of L-shaped cyclohexane units afforded a [12,2]CPPyr in five steps from commercially available compounds. The UV-vis absorption and fluorescence spectra as well as TD-DFT calculations clarified the unique photophysical and electronic properties of the [12,2]CPPyr.
authors: Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan. itami.kenichiro@a.mbox.nagoya-u.jp.
authors: Akiko
authors: A
authors: Yagi
authors: Gandikota
authors: G
authors: Venkataramana
authors: Yasutomo
authors: Y
authors: Segawa
authors: Kenichiro
authors: K
authors: Itami
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D049329:Nanostructures / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry; D010165:Palladium / Q000737:chemistry; D011721:Pyrenes / Q000138:chemical synthesis / Q000737:chemistry*; D011789:Quantum Theory
chemical_list: D011721:Pyrenes; D010165:Palladium; D002244:Carbon; D009532:Nickel; C030984:pyrene