title: Self-organization of low-symmetry adjacent-type metallophthalocyanines having branched alkyl chains.
abstract: Low-symmetry, adjacent-type metallophthalocyanines 1 and 2 with four branched alkyl chains on one side and a chiral bridging segment on the other were synthesized, and their self-organization properties were investigated. The synthesized adjacent-type phthalocyanines were liquid-crystalline and exhibited a phase transition from the crystalline phase to the mesophase below room temperature. X-ray diffraction indicated that the molecules are stacked in one-dimensional columnar aggregates with a hexagonal arrangement. The self-organization behavior of zinc complex 1 and cobalt complex 2 was also investigated with a monolayer experiment at the air-water interface. The adjacent-type phthalocyanines formed a stable monolayer at the air-water interface, and the monolayers could be transferred onto quartz substrates by a Y-type deposition. UV-vis, XRD, and CD measurements for the resulting Langmuir-Blodgett films indicated that 1 and 2 had different molecular orientations.
authors.affiliation: Department of Functional Polymer Science, Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan. mkimura@shinshu-u.ac.jp
authors.forename: Mutsumi
authors.initials: M
authors.lastname: Kimura
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Ueki
authors.forename: Kazuchika
authors.initials: K
authors.lastname: Ohta
authors.forename: Hirofusa
authors.initials: H
authors.lastname: Shirai
authors.forename: Nagao
authors.initials: N
authors.lastname: Kobayashi