title: Synthesis and characterization of self-assembled nanoscopic metallarectangles capable of binding fullerenes with size-selective responses.
abstract: Two new metallarectangles, 4 and 5, were obtained from the self-assembly of areneruthenium-based molecular clips 2 and 3 with a new dipyridyl donor ligand 1 containing a diamide core and ethynyl spacers. The metallarectangles were characterized by multinuclear NMR, electrospray ionization mass spectrometry, and UV-vis spectroscopy, and the molecular structure of 4 was unambiguously determined by single-crystal X-ray diffraction analysis. Because of the presence of an extended π-electron aromatic surface, the tetracene-containing molecular rectangle 5 was capable of binding C60 and C70 fullerenes as quantified by UV-vis, emission, and (1)H NMR experiments, providing an example of a supramolecular host capable of recognizing large guest molecules.
authors.affiliation: Department of Chemistry, University of Ulsan, Ulsan 680-749, Republic of Korea.
authors.forename: Anurag
authors.initials: A
authors.lastname: Mishra
authors.forename: Hyunji
authors.initials: H
authors.lastname: Jung
authors.forename: Min Hyung
authors.initials: MH
authors.lastname: Lee
authors.forename: Myoung Soo
authors.initials: MS
authors.lastname: Lah
authors.forename: Ki-Whan
authors.initials: KW
authors.lastname: Chi