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Supramolecular architectures self-assembled using long chain alkylated spin crossover cobalt(ii) compounds
Ryohei Akiyoshi1, Keita Kuroiwa, Saliu Alao Amolegbe
1Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan. hayami@sci.kumamoto-u.ac.jp.
Chemical Communications (Cambridge, England)
|April 4, 2017
Summary
Researchers created self-assembled hybrid supramolecular architectures using cobalt(ii) complexes. These structures show unique wire or rolled sheet arrangements dependent on alkyl chain length, with gradual spin-crossover behaviors observed.
Area of Science:
- Supramolecular Chemistry
- Coordination Chemistry
- Materials Science
Background:
- Amphiphilic molecules self-assemble into ordered structures.
- Cobalt(ii) complexes can exhibit spin-crossover properties.
Purpose of the Study:
- To synthesize and characterize novel hybrid supramolecular architectures.
- To investigate the influence of alkyl chain length on self-assembly.
- To study the spin-crossover behavior of cobalt(ii) centers in these architectures.
Main Methods:
- Synthesis of [Co(Cn-terpy)2](C12-Glu)2 complexes.
- Transmission Electron Microscopy (TEM) for morphology.
- Powder X-ray Diffraction (PXRD) for structural analysis.
- Magnetic susceptibility measurements for spin-crossover studies.
Main Results:
- Formation of wire and rolled sheet supramolecular arrangements.
- Odd-even effect observed in alkyl chain dependence of the structures.
- Gradual spin-crossover behavior in cobalt(ii) centers.
Conclusions:
- Successful self-assembly of hybrid supramolecular architectures.
- Alkyl chain length is a critical factor in directing supramolecular organization.
- The cobalt(ii) complexes exhibit tunable spin-crossover properties within these architectures.