In Situ Tracking of Wetting-Front Transient Heat Release on a Surface-Mounted Metal-Organic Framework
In Situ Tracking of Wetting-Front Transient Heat Release on a Surface-Mounted Metal-Organic Framework
复制标题
表面安装金属有机框架上润湿前沿瞬态热释放的原位跟踪
DOI：
10.1002/adma.202006980
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发表时间：
2021
影响因子：
29.4
通讯作者：
A.
中科院分区：
文献类型：
--
作者：
Li Weijin;Yang Guang;Terzis Alex;ros;Mukherjee Soumya;He Chao;An Xingtao;Wu Jingyi;Weig;Bernhard;Fischer Rol;A.
在客体吸附和主体-客体相互作用期间的瞬态热产生是金属-有机框架（MOF）化学中的自然现象。然而，由于快速散热到周围环境，这种MOF释放的热量的原位跟踪是一个研究不足的领域。在此，开发了一种简单的毛细管驱动的液体吸入方法，用于原位跟踪纤维素纤维基底上的表面安装的MOFs（SURMOFs）的润湿前沿处的瞬态热释放。利用红外热成像获得了一系列基于MOF的衬底和吸收液体的时空温度分布。水和二元混合物与有机溶剂的润湿前沿的温升超过10 K，具有超快和可区分的热信号响应（<1 s），可检测的浓度极限≤1 wt%。作为痕量溶剂检测技术的最新进展，这项研究显示了SURMOFs在未来传感器设备中集成的巨大前景。受这一原型研究的启发，基于SURMOF的瞬态热信号转导可能会扩展到不断扩大的SURMOF和其他类型的表面接枝多孔材料库，转化为各种方便，便携和无处不在的传感器设备。
Transient heat generation during guest adsorption and host–guest interactions is a natural phenomenon in metal–organic framework (MOF) chemistry. However, in situ tracking of such MOF released heat is an insufficiently researched field due to the fast heat dissipation to the surroundings. Herein, a facile capillary‐driven liquid‐imbibition approach is developed for in situ tracking of transient heat release at the wetting front of surface‐mounted MOFs (SURMOFs) on cellulosic fiber substrates. Spatiotemporal temperature distributions are obtained with infrared thermal imaging for a range of MOF‐based substrates and imbibed liquids. Temperature rises at the wetting front of water and binary mixtures with organic solvents are found to be over 10 K with an ultrafast and distinguishable thermal signal response (<1 s) with a detectable concentration limit ≤1 wt%. As an advancement to the state‐of‐the‐art in trace‐solvent detection technologies, this study shows great prospects for the integration of SURMOFs in future sensor devices. Inspired by this prototypal study, SURMOF‐based transient heat signal transduction is likely to be extended to an ever‐expanding library of SURMOFs and other classes of surface‐grafted porous materials, translating into a wide range of convenient, portable, and ubiquitous sensor devices.