Hideaki Oike

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Nonlinear polymer topologies composed of cyclic and branched polymer segments are systematically classified by reference to constitutional isomerism in a series of alkanes (CnH2n+2), monocycloalkanes (CnH2n), and polycycloalkanes (CnH2n-2, CnH2n-4, etc). Thus, the total number of chain ends (termini) and of branch points (junctions) are maintained as(More)
With biologically important "peptide bundling" as the motif, new chromophoric cyclic host 1 was designed, which consists of two zinc porphyrin units that are connected by dynamic peptide helices of nonameric aminoisobutyric acid (Aib) units. Upon inclusion of pyridine-anchored helical peptides between the zinc porphyrin units, 1 displayed an intense(More)
In the title compound, C(29)H(25)ClO(4), the dihedral angle between the benzene rings of the 2,4,6-trimethyl-benzoyl group and the 4-chloro-benzoyl group is 65.19 (9)°. The dihedral angles between the naphthalene ring system and the benzene rings of the 2,4,6-trimethyl-benzoyl group and the 4-chloro-benzoyl group are 85.66 (8) and 69.48 (8)°, respectively.(More)
Actuators with a high-speed response under a high-frequency (more than 100 Hz) applied square-wave voltage of ±2 V have been developed with an electrode composed of millimeter-long single-walled carbon nanotubes synthesized by the "supergrowth method" (SG-SWNTs) and ionic liquids (ILs). Detailed studies concerning induced electric current and transferred(More)
In the title compound, C(22)H(22)O(3), the dihedral angle between the naphthalene ring system and the benzene ring is 79.95 (5)°. The bridging carbonyl C-C(=O)-C group makes dihedral angles of 24.21 (7) and 82.43 (8)°, respectively, with the naphthalene ring system and the benzene ring. In the crystal, weak inter-molecular C-H⋯O inter-actions link(More)
In the title compound, C(22)H(22)O(3), the dihedral angle between the naphthalene ring system and the benzene ring is 82.93 (5)°. The bridging carbonyl C-C(=O)-C plane makes dihedral angles of 50.11 (6) and 46.87 (7)°, respectively, with the naphthalene ring system and the benzene ring. In the crystal, three types of weak inter-molecular C-H⋯O inter-actions(More)
The mol-ecule of the title compound, C(34)H(36)O(6), is located on a twofold rotation axis. The two 4-but-oxy-benzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost anti-parallel. The dihedral angles between the benzene rings and the naphthalene ring system are 71.70 (4)°. In the crystal, the mol-ecules are connected via(More)
A theoretical background is provided for the methods of the analysis and topological separation of complex macrocyclic polymers by means of size exclusion chromatography (SEC), liquid adsorption chromatography, and liquid chromatography at the critical condition. We focus on a particular problem of the separation of theta-shaped polymers from its(More)
In the title compound, C(25)H(16)N(2)O(8), the dihedral angle between the naphthalene ring system and the benzene ring of the nitro-phenyl ketone unit is 82.64 (7)°. The bridging ester O-C(=O)-C plane makes dihedral angles of 42.12 (8) and 11.47 (9)°, respectively, with the naphthalene ring system and the benzene ring of the nitro-phenyl ester unit. In the(More)