可见光驱动的动态晶体驱动器：从[2+2]光二聚化致裂到弹性环丁烷溶剂化物

IF 7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Chemistry of Materials Pub Date : 2025-08-26 DOI:10.1021/acs.chemmater.5c01391

Jianmin Zhou, Yuhan Yang, Jinheng Dong, Xin Dai, Yihan Wang, Lina Zhou*, Songgu Wu* and Junbo Gong,

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引用次数: 0

摘要

光响应型有机分子晶体材料能够有效地将光能转化为机械能。目前，大多数对光敏感的有机晶体只对紫外线（UV）照射有反应。高能紫外光固有的生物危害和环境风险要求可见光响应有机晶体材料的发展。合成了一种新型的吡啶基丙烯衍生物BTPA，该衍生物具有供体- π -受体（D - π-A）结构。这种化合物表现出跨越光谱的紫外和可见区域的宽带光学吸收。在光照下，BTPA晶体发生光环加成反应并伴有光敏效应，具体表现为沿(043)/（04¯3¯）晶体平面的定向开裂。光环加成产物重结晶生成针状晶体，经SCXRD鉴定为环己烷溶剂化物。值得注意的是，这些溶剂化物晶体在(100)/（1¯00）切面上表现出可逆的弹性变形。最后，利用BTPA晶体的定向光力学裂纹，我们开发了一种用于远程操纵钢球的可见光驱动驱动器。该系统表现出卓越的性能（力重比~ 300，力密度= 3.42 × 105 N/m3，功率密度= 32.1 J/m3），可与商用音圈致动器相媲美。这项工作展示了有机分子晶体作为先进的光响应智能材料的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Visible-Light Driven Dynamic Crystal Actuators: From [2+2] Photodimerization-Induced Fracturing to Elastic Cyclobutane Solvates

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Visible-Light Driven Dynamic Crystal Actuators: From [2+2] Photodimerization-Induced Fracturing to Elastic Cyclobutane Solvates

Light-responsive organic molecular crystal materials can efficiently convert light energy to mechanical energy. Currently, most light-responsive organic crystals respond only to ultraviolet (UV) irradiation. The inherent biological hazards and environmental risks with high-energy UV light necessitate the advancement of visible-light-responsive organic crystal materials. We synthesized BTPA, a novel pyridine-based propenenitrile derivative engineered with a donor−π–acceptor (D−π–A) structure. This compound demonstrates broadband optical absorption spanning the UV and visible regions of the spectrum. Upon illumination, the BTPA crystals undergo photocycloaddition reactions concomitant with photomechanical effects, specifically manifested as directional cracking along the $(043) / (0 \bar{4} \bar{3})$ crystallographic planes. Recrystallization of the photocycloaddition product produced needle-like crystals, identified by SCXRD as a cyclohexane solvate. Notably, these solvate crystals exhibit reversible elastic deformation on $(100) / (\bar{1} 00)$ facets. Finally, by leveraging the oriented photomechanical cracking of BTPA crystals, we developed a visible-light-powered actuator for remote steel ball manipulation. The system demonstrates remarkable performance (force-to-weight ratio ∼300, force density = 3.42 × 10⁵ N/m³, power density = 32.1 J/m³), rivaling commercial voice coil actuators. This work showcases the potential of organic molecular crystals as advanced, light-responsive smart materials.

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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.