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Synthesis of fully-fused bisboron azomethine complexes and their conjugated polymers with solid-state near-infrared emission

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Abstract

We describe herein a robust π-conjugated molecules with solid-state emission in the near-infrared (NIR) region (ΦF = 0.03–0.06). Initially, the diastereomers of bisboron azomethine complexes having phenyl groups in the same and opposite directions to the π-plane were synthesized. These diastereomers showed emission properties with larger red-shifts (>200 nm) and 10 times larger emission efficiencies than those of the mononuclear complex. Theoretical calculation data indicate that superior optical properties of the bisboron complexes should be attributable to efficient expansion of the π-conjugated system. In addition, the bisboron compounds and their conjugated polymers exhibited intense NIR emissions even in the solid state.

Graphical abstract: Synthesis of fully-fused bisboron azomethine complexes and their conjugated polymers with solid-state near-infrared emission

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Article information


Submitted
30 Mar 2020
Accepted
02 May 2020
First published
13 May 2020

Chem. Commun., 2020, Advance Article
Article type
Communication

Synthesis of fully-fused bisboron azomethine complexes and their conjugated polymers with solid-state near-infrared emission

S. Ohtani, M. Nakamura, M. Gon, K. Tanaka and Y. Chujo, Chem. Commun., 2020, Advance Article , DOI: 10.1039/D0CC02301A

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