Development of 2,1,3-Benzothiadiazole-Based Room-Temperature Fluorescent Nematic Liquid Crystals.

Muhammad Suhail Bin Uzair, Yoshimichi Shimomura, Takuya Tanaka, Takashi Kajitani, Gen-Ichi Konishi

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Article in Molecules (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 authors.

Muhammad Suhail Bin UzairDepartment of Chemical Science and Engineering, Institute of Science Tokyo, Tokyo 152-8552, Japan.

Yoshimichi ShimomuraDepartment of Chemical Science and Engineering, Institute of Science Tokyo, Tokyo 152-8552, Japan.

Takuya TanakaDepartment of Chemical Science and Engineering, Institute of Science Tokyo, Tokyo 152-8552, Japan.

Takashi KajitaniCore Facility Center, Research Infrastructure Management Center, Institute of Science Tokyo, Yokohama 226-8501, Japan.

Gen-Ichi KonishiDepartment of Chemical Science and Engineering, Institute of Science Tokyo, Tokyo 152-8552, Japan.ORCID 0000-0002-6322-0364

Funding

MEXT/JSPS KAKENHI grants 23H02036

6 · The paper itself

Abstract

Fluorescent liquid crystals (LCs) have attracted considerable interest owing to their unique combination of fluidity, anisotropy, and intrinsic emission. However, most reported fluorescent LCs exhibit high phase transition temperatures and/or smectic phases, limiting their practical applications. To address this, we designed and synthesized a series of 2,1,3-benzothiadiazole (BTD)-based fluorescent nematic liquid crystals incorporating donor (D) or acceptor (A) groups to form D-A-D or D-A-A structures. Most of the synthesized derivatives exhibited supercooled nematic phases at room temperature. They composed various functional groups, such as secondary alkylamine, branched alkyl chain, and trifluoroacetyl groups, which are rarely used in calamitic nematic LCs. Notably, dimethylamine- and carbonyl-substituted derivatives exhibited relatively high fluorescence quantum yields (Φ

Indexed as

2,1,3-benzothiadiazolefluorescent LCnematic liquid crystalroom temperature LC

Identifiers

PMID40509325

DOI10.3390/molecules30112438

PMCPMC12155834

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LicenceCC BY

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