Reentrant Gel-Sol-Gel transition of a lipophilic Co(II) coordination polymer

Hisanori Nagatomi, Nobuhiro Yanai, Nobuo Kimizuka

Research output: Contribution to journalArticle

1 Citation (Scopus)


A reentrant gel-sol-gel phase transition in organic media is achieved for a single-component, thermoresponsive Co(II)-based coordination polymer bridged by suitably designed lipophilic 1,2,4-triazole ligands. Its green chloroform solution at room temperature turns into a blue gel upon heating, whereas it is transformed to a yellow gel by cooling. These unique thermal phase transitions are reversible and occur all by themselves, which originate from the simultaneous pursuit of entropy-driven changes in coordination structures and enthalpydriven interactions between the coordination polymers.

Original languageEnglish
Pages (from-to)97-99
Number of pages3
JournalChemistry Letters
Issue number1
Publication statusPublished - Jan 1 2018

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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