title: Formation of Discrete Ladders and a Macroporous Xerogel Film by the Zipperlike Dimerization of Meso-Meso-Linked Zinc(II) Porphyrin Arrays with Di(pyrid-3-yl)acetylene.
abstract: Metal porphyrins assemble to form a supramolecular architecture with a characteristic structure and characteristic properties and functions upon complexation with appropriate ligands. However, there are few applications of these assembly processes to the construction of polymeric porphyrin arrays with useful functionalities. In this study, we found that meso-meso-linked Zn(II) porphyrin arrays underwent zipperlike dimerization upon complexation with di(pyrid-3-yl)acetylene (DPA) in chloroform to form discrete double-stranded porphyrin ladders. Similarly, the assembly of poly(zinc(II) porphyrinylene) with DPA gave a thermoresponsive gel, whose three-dimensional network structure was so strong that a macroporous xerogel film was obtained.
authors.affiliation: Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501 (Japan).
authors.forename: Kohei
authors.initials: K
authors.lastname: Kose
authors.affiliation: Department of Chemistry and Materials Technology, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585 (Japan).
authors.forename: Jin
authors.initials: J
authors.lastname: Motoyanagi
authors.affiliation: Department of Chemistry and Materials Technology, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585 (Japan).
authors.forename: Takahiro
authors.initials: T
authors.lastname: Kusukawa
authors.affiliation: Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502 (Japan). osuka@kuchem.kyoto-u.ac.jp.
authors.forename: Atsuhiro
authors.initials: A
authors.lastname: Osuka
authors.affiliation: Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501 (Japan). tsuda@harbor.kobe-u.ac.jp.
authors.forename: Akihiko
authors.initials: A
authors.lastname: Tsuda
keywords: ladder polymers; macroporous materials; multiporphyrin arrays; supramolecular chemistry; thermoresponsive gels