用于多模式信息加密的光调制超分子聚合物中的可逆圆偏振发光反转和发射颜色切换。

IF 14.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Journal of the American Chemical Society Pub Date : 2024-11-28 DOI:10.1021/jacs.4c12211
Kuo Fu, Da-Hui Qu, Guofeng Liu
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引用次数: 0

摘要

构建表现出动态手性反转和发射性颜色调制的圆偏振发光(CPL)材料,以实现多模态信息加密,既是一项重大挑战,也是一个难得的机遇。在这里,我们开发了一种吡啶噻唑丙烯腈-胆固醇衍生物(Z-PTC),它表现出与波长相关的光异构化和光环化,能够在具有良好 CPL 活性的超分子组装体中实现动态手性反转和发射性颜色调制。与 Ag+ 离子配位形成的 Z-PTC Ag 超分子聚合物(SP1)组装成纳米管,显示出增强的正黄绿色 CPL。在 454 纳米波长下照射,SP1 转变为 Z/E-PTC Ag 超分子聚合物混合物(SP2)的纳米球,显示出倒置的超分子手性,并发出橙黄色的负 CPL。将 SP2 重新加热到 343 K,可通过出色的可逆光异构化恢复原始纳米管结构。暴露在 365 纳米的光线下也会诱导 CPL 从正向反转为负向,并引发从 SP1 到 SP2 的形态变化。长时间照射会进一步转化为不规则的超分子聚合体,使发射颜色变为蓝色,并消除 CPL。多色 CPL 系统的这些动态特性,包括可逆的手性反转,也可以在半固体状态下实现,在提高安全性和复杂性的多模式信息加密应用中展现出巨大的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Reversible Circularly Polarized Luminescence Inversion and Emission Color Switching in Photo-Modulated Supramolecular Polymer for Multi-Modal Information Encryption.

Constructing circularly polarized luminescence (CPL) materials that exhibit dynamic handedness inversion and emissive color modulation for multimodal information encryption presents both a significant challenge and a compelling opportunity. Here, we have developed a pyridinethiazole acrylonitrile-cholesterol derivative (Z-PTC) that exhibits wavelength-dependent photoisomerization and photocyclization, enabling dynamic handedness inversion and emissive color modulation in supramolecular assemblies with decent CPL activity. Coordination with Ag+ ions form the Z-PTC Ag supramolecular polymer (SP1), which assembles into nanotubes displaying enhanced positive yellow-green CPL. Irradiation at 454 nm transforms SP1 into nanospheres of a mixture supramolecular polymer (SP2) of Z/E-PTC Ag, displaying inverted supramolecular chirality and emitting negative orange-yellow CPL. Reheating SP2 to 343 K restores the original nanotube structure via excellent reversible photoisomerization. Exposure to 365 nm light also induces CPL inversion from positive to negative and triggers morphological changes from SP1 to SP2. Prolonged irradiation causes further transformation into irregular supramolecular aggregate, shifting the emission color to blue and eliminating CPL. These dynamic properties of the multicolor CPL system, including reversible handedness inversion, can also be realized in the semisolid state, exhibiting promising potential for multimodal information encryption applications with enhanced security and complexity.

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来源期刊
CiteScore
24.40
自引率
6.00%
发文量
2398
审稿时长
1.6 months
期刊介绍: The flagship journal of the American Chemical Society, known as the Journal of the American Chemical Society (JACS), has been a prestigious publication since its establishment in 1879. It holds a preeminent position in the field of chemistry and related interdisciplinary sciences. JACS is committed to disseminating cutting-edge research papers, covering a wide range of topics, and encompasses approximately 19,000 pages of Articles, Communications, and Perspectives annually. With a weekly publication frequency, JACS plays a vital role in advancing the field of chemistry by providing essential research.
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