MOF-Nanocomposite Mixed-Matrix Membrane for Dual-Luminescence Ratiometric Temperature Sensing
MOF-Nanocomposite Mixed-Matrix Membrane for Dual-Luminescence Ratiometric Temperature Sensing
复制标题
用于双发光比率温度传感的 MOF-纳米复合材料混合基质膜
DOI：
10.1002/adom.202100945
复制
发表时间：
2021-07-03
影响因子：
9
通讯作者：
Chen, Banglin
中科院分区：
文献类型：
--
作者：
Ding, Yanyun;Lu, Yantong;Chen, Banglin
温度的精确测量在医学、科学和工程的许多分支中至关重要，并且通常需要非侵入性的、高精度的温度传感器，并且可以在纳米尺度上空间解析热波动。本文介绍了一种新型的柔性和可定制的混合基质膜（MMM），其特点是在聚合物基体中嵌入双发射金属有机框架（MOF）基纳米复合材料，并对其在发光温度传感中的潜在应用进行了评估。所制备的“Cdots&RB@ZIF-8（2）-MMM”继承了掺入的Cdots&RB@沸石-咪唑酯-骨架（ZIF）-8（2）纳米复合材料的发光性质，并且具有发蓝光的碳量子点（Cdot）和发绿光的罗丹明B（RB）两者的发光。由于两个客体发射体之间的荧光共振能量转移是热相关的，Cdots&RB@ZIF-8（2）-MMM的测温参数（I-C/I-RB）在生理温度范围内具有优异的线性响应，具有有利的相对灵敏度、光谱重复性和结构稳定性。这里提出的新的比率膜温度计应引发进一步的兴趣，在发光的MOF/聚合物的混合物和其不同的传感应用。
Accurate measurement of temperature is crucial in many branches of medicine, science, and engineering, and often requires temperature sensors that are noninvasive, of high accuracy, and can spatially resolve thermal fluctuations at the nanoscale. Here a new type of flexible and tailorable mixed-matrix membranes (MMMs) is introduced, which feature dual-emitting metal-organic framework (MOF)-based nanocomposites embedded in polymer matrix, and its potential use in luminescence temperature sensing is evaluated. The as-prepared "Cdots&RB@ZIF-8(2)-MMM" inherits the luminescence properties of the incorporated Cdots&RB@zeolitic-imidazolate-framework (ZIF)-8(2) nanocomposite and possesses the luminescence of both the blue-emitting carbon dots (Cdots) and the green-emitting rhodamine B (RB). Since the fluorescence resonance energy transfer between the two guest emitters is thermally correlated, the thermometric parameter (I-C/I-RB) of the Cdots&RB@ZIF-8(2)-MMM has excellent linear response in the physiological temperature range, with favorable relative sensitivity, spectral repeatability, and structural stability. The new ratiometric membranous thermometers proposed here should initiate further interest in luminescent MOF/polymer hybrids and their diverse sensing applications.