title: Self-Assembled Boronic Ester Cavitand Capsules with Various Bis(catechol) Linkers: Cavity-Expanded and Chiral Capsules.
abstract: Two molecules of cavitand tetraboronic acid and four molecules of various bis(catechol) linkers self-assemble into capsules through the formation of eight dynamic boronic ester bonds. Each capsule has a different cavity size depending on the linker used, and shows particular guest encapsulation selectivity. A chiral capsule made up of the cavitand and a chiral bis(catechol) linker was also constructed. This capsule induces supramolecular chirality with respect to a prochiral biphenyl guest by diastereomeric encapsulation through the asymmetric suppression of rotation around the axis of the prochiral biphenyl moiety.
authors.affiliation: Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529 (Japan).
authors.forename: Kento
authors.initials: K
authors.lastname: Tamaki
authors.affiliation: Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529 (Japan).
authors.forename: Asumi
authors.initials: A
authors.lastname: Ishigami
authors.affiliation: Department of Electronics and Materials Science, Faculty of Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561 (Japan).
authors.forename: Yasutaka
authors.initials: Y
authors.lastname: Tanaka
authors.affiliation: Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529 (Japan).
authors.forename: Masamichi
authors.initials: M
authors.lastname: Yamanaka
authors.affiliation: Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529 (Japan). kobayashi.kenji.a@shizuoka.ac.jp.
authors.forename: Kenji
authors.initials: K
authors.lastname: Kobayashi
keywords: cavitands; drug delivery; host-guest systems; self-assembly; supramolecular chemistry