Smart-Responsive HOF Heterostructures with Multiple Spatial-Resolved Emission Modes towards Photonic Security Platform.
Smart-Responsive HOF Heterostructures with Multiple Spatial-Resolved Emission Modes towards Photonic Security Platform.
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面向光子安全平台的具有多种空间分辨发射模式的智能响应 HOF 异质结构。
DOI：
10.1002/adma.202309130
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
Zhangjing Zhang
中科院分区：
文献类型：
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作者：
Yuanchao Lv;Jiashuai Liang;Zhile Xiong;Xue Yang;Yunbin Li;Hao Zhang;S. Xiang;Banglin Chen;Zhangjing Zhang
发光氢键有机框架（HOFs）具有独特的动力学特性和多样的功能位点，在信息安全领域有着巨大的应用潜力，但目前大多数响应性HOFs都集中在单组分框架上，发光控制受到限制，限制了其在高级机密信息保护领域的进一步应用。在此，我们报道了第一个具有多个空间分辨发射模式的智能响应霍夫异质结构，用于隐蔽光子安全平台。采用氢键辅助外延生长方法，将不同的HOF集成到一根微丝上，制备了霍夫异质结构。HOFs独特的响应行为使得异质结构能够同时显示通过骨架转变的热致变色和通过质子化效应的酸致变色，从而产生多种发射模式。双激励控制的空间分辨发射模式构成异质结构的指纹，并使具有多个转换状态的智能响应光子条形码的建立成为可能，这进一步展示了防伪标签应用中的动态编码能力和增强的安全性。这些结果提供了一个有前途的路线，设计面向功能的智能响应霍夫微器件先进的防伪应用。本文受版权保护。All rights reserved.
Luminescent hydrogen-bonded organic frameworks (HOFs) with the unique dynamics and versatile functional sites hold great potential application in information security, yet most of responsive HOFs focus on the single-component framework with restrained emission control, limiting further applications in advanced confidential information protection. Herein, we report the first smart-responsive HOF heterostructure with multiple spatial-resolved emission modes for covert photonic security platform. The HOF heterostructures are prepared by integrating different HOFs into a single microwire based on a hydrogen-bond-assisted epitaxial growth method. The distinct responsive behaviors of HOFs permit the heterostructure to simultaneously display the thermochromism via the framework transformation and the acidichromism via the protonation effect, thus generating multiple emission modes. The dual stimuli-controlled spatial-resolved emissive modes constitute the fingerprint of a heterostructure, and enable the establishment of the smart responsive photonic barcode with multiple convert states, which further demonstrate the dynamic coding capability and enhanced security in anti-counterfeiting label application. These results offer a promising route to design function-oriented smart responsive HOF micro-devices towards advanced anticounterfeiting applications. This article is protected by copyright. All rights reserved.