Multi electron and proton-transfer system based on 2,2′-biimidazole derivatives

T. Akutagawa, G. Saito, H. Yamochi, M. Kusunoki, K. Sakaguchi

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


A systematical study of 2,2′-biimidazole (H2BIM) derivatives proved that these compounds form a new proton-transfer(PT) and electron (charge)-transfer(CT) system. The study of their acidity, redox property and complex formation with TCNQs confirmed seven new states in the speculated 25-independent species. Corresponding to the protonated states of H2BIM system, the formal charges of TCNQs in the complexes vary from completely ionic, partial CT, to neutral. Also, we developed a new method of electrocrystallization using the pH-controlled electrolytic solution. By applying this novel technique, dibenzobiimidazole system gave metallic to semiconductive TCNQ complexes.

Original languageEnglish
Pages (from-to)591-592
Number of pages2
JournalSynthetic Metals
Issue number1-3
Publication statusPublished - 1995 Mar 1


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