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Updated: Apr 7, 2026

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Curved Oligophenylenes as Donors in Shape-Persistent Donor-Acceptor Macrocycles with Solvatofluorochromic Properties
Takuya Kuwabara1,2,3, Jun Orii2, Yasutomo Segawa1,2
1JST-ERATO, Itami Molecular Nanocarbon Project, Chikusa, Nagoya, 464-8602 (Japan).
Abstract:
Many optoelectronic organic materials are based on donor-acceptor (D-A) systems with heteroatom-containing electron donors. Herein, we introduce a new molecular design for all-carbon curved oligoparaphenylenes as donors, which results in the generation of unique shape-persistent D-A macrocycles. Two types of acceptor-inserted cycloparaphenylenes were synthesized. These macrocycles display positive solvatofluorochromic properties owing to their D-A characteristics, which were confirmed by theoretical and electrochemical studies.
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