title: Carboxylate-Driven Supramolecular Assemblies of Protonated meso-Aryl-Substituted Dipyrrolylpyrazoles.
abstract: Dipyrrolylpyrazole (dpp) derivatives possessing an aryl ring at the pyrazole 4-position were synthesized. Upon protonation, modified dpp derivatives formed a variety of assembled structures through complexation with carboxylates, as observed by single-crystal X-ray and synchrotron XRD analyses. In particular, the complexation of protonated dpp species possessing long alkyl chains with dicarboxylates resulted in highly ordered assembled structures, the packing modes of which as lamellar structures were controlled by the lengths of the spacer units between two carboxylate moieties. The charge-carrier transporting properties of the solid materials were also controlled by bound anions, including dicarboxylates.
authors.affiliation: College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu 525-8577 (Japan). maedahir@ph.ritsumei.ac.jp.
authors.forename: Hiromitsu
authors.initials: H
authors.lastname: Maeda
authors.affiliation: College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu 525-8577 (Japan).
authors.forename: Kengo
authors.initials: K
authors.lastname: Chigusa
authors.affiliation: College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu 525-8577 (Japan).
authors.forename: Ryohei
authors.initials: R
authors.lastname: Yamakado
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871 (Japan).|Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510 (Japan).
authors.forename: Tsuneaki
authors.initials: T
authors.lastname: Sakurai
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871 (Japan).|Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510 (Japan).
authors.forename: Shu
authors.initials: S
authors.lastname: Seki
keywords: heterocycles; ion pairs; polymers; self-assembly; supramolecular chemistry