Journal
CHEMICAL SCIENCE
Volume 6, Issue 5, Pages 2853-2858Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5sc00273g
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Funding
- MEXT of Japan [21108002, 24750054, 25107510, 26708005, 26107510, 26620039, 26220801, 26248017, 26110505]
- JSPS
- Japan Prize Foundation
- Iketani Science and Technology Foundation
- Murata Science Foundation
- Tokuyama Science Foundation
- Ogasawara Foundation for the Promotion of Science Engineering
- Kao Foundation for Arts and Sciences
- Asahi Glass Foundation
- Noguchi Institute
- Japan Association for Chemical Innovation
- MIKIYA Science and Technology Foundation
- Yazaki Memorial Foundation for Science and Technology
- Shorai Foundation for Science and Technology
- Kurata Memorial Hitachi Science and Technology Foundation
- Kumagai Foundation for Science and Technology
- Grants-in-Aid for Scientific Research [26107510, 25107510, 26620039] Funding Source: KAKEN
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One-dimensional coordination polymers (1D-CPs) tend either to dissociate into constitutive ligands and metals readily in solution, or to aggregate randomly and amorphously, which prevents them from widespread application. In the present research, 1D-CPs comprising bridging dipyrrin ligands and divalent metal ions (Zn2+, Ni2+, and Cu2+) are synthesized. A liquid/liquid interfacial reaction gives rise to single crystals suitable for X-ray diffraction analysis: A dichloromethane solution of the ligand is layered with aqueous metal(II) acetate, such that the coordination reaction proceeds at the liquid/liquid interface. Isolated single fibers of the zinc coordination polymer may be exfoliated from the single crystal or bulk solid upon ultrasonication. Atomic force microscopy (AFM) detects the isolated fibers with lengths of more than several mm. The exfoliated 1D-CP wires feature good processability, realizing a conjugate with single-wall carbon nanotubes (SWCNTs), and a thin film on a transparent SnO2 electrode. The processed materials show electric conversion ability: For example, the modified SnO2 electrode serves as a photoanode for a photoelectric conversion system. The designability and tunability of the present 1D-CPs is demonstrated by a ligand modification, affording a luminescent property and an extension of the photoelectric conversion response to longer wavelengths.
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