title: A Large π-Extended Carbon Nanoring Based on Nanographene Units: Bottom-Up Synthesis, Photophysical Properties, and Selective Complexation with Fullerene C70.
abstract: Herein we report the organoplatinum-mediated bottom-up synthesis, characterization, and properties of a novel large π-extended carbon nanoring based on a nanographene hexa-peri-hexabenzocoronene (HBC) building unit. This tubular structure can be considered as an example of the longitudinal extension of the cycloparaphenylene scaffold to form a large π-extended carbon nanotube (CNT) segment. The cyclic tetramer of a tetramesityl HBC ([4]CHBC) was synthesized by the reaction of a 2,11-diborylated hexa-peri-hexabenzocoronene with a platinum complex, followed by reductive elimination. The structure of this tubular molecule was further confirmed by physical characterization. Theoretical calculations indicate that the strain energy of this nanoring is as high as 49.18 kcal mol-1. The selective supramolecular host-guest interaction between [4]CHBC and C70was also investigated.
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China (USTC), Hefei, 230026, P.R. China.
authors.forename: Dapeng
authors.initials: D
authors.lastname: Lu
authors.affiliation: College of Chemical Engineering, Zhejiang University of Technology, 18, Chaowang Road, Hangzhou, Zhejiang Province, 310032, China.
authors.forename: Guilin
authors.initials: G
authors.lastname: Zhuang
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China (USTC), Hefei, 230026, P.R. China.
authors.forename: Haotian
authors.initials: H
authors.lastname: Wu
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China (USTC), Hefei, 230026, P.R. China.
authors.forename: Song
authors.initials: S
authors.lastname: Wang
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China (USTC), Hefei, 230026, P.R. China.
authors.forename: Shangfeng
authors.initials: S
authors.lastname: Yang
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China (USTC), Hefei, 230026, P.R. China.
authors.forename: Pingwu
authors.identifier: 0000-0002-2715-0979
authors.initials: P
authors.lastname: Du
keywords: carbon nanorings; carbon nanotubes; fullerenes; host-guest systems; π conjugation