Circularly Polarized Light-Regulable Crystal–Liquid Phase Transition of Self-Assembled Macroscopic Chiral Twisted Ribbons

IF 7.2 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Chemistry of Materials Pub Date : 2025-03-14 DOI:10.1021/acs.chemmater.5c0047810.1021/acs.chemmater.5c00478

Xin Dong, Yixuan Jiang, Yanyi He, Jingsong Feng, Xiao-Qi Yu and Shanshan Yu*,

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Abstract

Chirality is a fundamental property of nature, observed at the subatomic, molecular, supramolecular, and macroscopic levels. Circularly polarized light (CPL) has attracted extensive attention as an effective tool for regulating and inducing chirality on various scales. Herein, we report the formation of micron-scale twisted ribbons from homochiral molecular H₈-BAz through self-assembly driven by solvophobic interactions. The chiral information in H₈-BAz is effectively transferred and amplified in the supramolecular structure and finally appears as macroscopic homochiral twisted ribbons that match the chirality of the monomers. The ribbons undergo a photoinduced crystal-to-liquid transition (PCLT) when exposed to 365 nm light due to the isomerization of the azobenzene structure. Additionally, the PCLT behavior of chiral ribbons is regulated by CPL: When irradiated with homochiral right-handed CPL (RCP), the ribbon with a P-helix formed by (R)-H₈-BAz undergoes a faster phase transition. The M-helix ribbon undergoes a faster phase transition with left-handed CPL (LCP). The average time difference for the phase transition reaches 1.5 times. Our results demonstrate a simple method for creating macroscopic chiral structures and the impact of chiral light sources on their phase transition process.

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来源期刊

Chemistry of Materials 工程技术-材料科学：综合

CiteScore

14.10

自引率

5.80%

发文量

929

审稿时长

1.5 months

期刊介绍： The journal Chemistry of Materials focuses on publishing original research at the intersection of materials science and chemistry. The studies published in the journal involve chemistry as a prominent component and explore topics such as the design, synthesis, characterization, processing, understanding, and application of functional or potentially functional materials. The journal covers various areas of interest, including inorganic and organic solid-state chemistry, nanomaterials, biomaterials, thin films and polymers, and composite/hybrid materials. The journal particularly seeks papers that highlight the creation or development of innovative materials with novel optical, electrical, magnetic, catalytic, or mechanical properties. It is essential that manuscripts on these topics have a primary focus on the chemistry of materials and represent a significant advancement compared to prior research. Before external reviews are sought, submitted manuscripts undergo a review process by a minimum of two editors to ensure their appropriateness for the journal and the presence of sufficient evidence of a significant advance that will be of broad interest to the materials chemistry community.