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Porous Nanofiber Membrane: Rational Platform for Highly Sensitive Thermochromic Sensor
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2022-03-07 , DOI: 10.1002/adfm.202200463 Dong‐Ha Kim 1 , Jaehyeong Bae 1, 2 , Jiyoung Lee 1 , Jaewan Ahn 1 , Won‐Tae Hwang 1 , Jaehyun Ko 1 , Il‐Doo Kim 1
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2022-03-07 , DOI: 10.1002/adfm.202200463 Dong‐Ha Kim 1 , Jaehyeong Bae 1, 2 , Jiyoung Lee 1 , Jaewan Ahn 1 , Won‐Tae Hwang 1 , Jaehyun Ko 1 , Il‐Doo Kim 1
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Thermochromic sensors provide an intuitive and real-time solution for monitoring the local temperature with naked eyes. Conventional thermochromic sensors often utilize either solution-type or dense film-type platforms, which are suboptimal morphologies for exposing a large number of dye molecules to the surface, leading to low sensitivity and sluggish responding speeds. Herein, this article introduces rational synthetic routes to fabricate highly sensitive nanofiber (NF) sensor membranes loaded with thermochromic dyes (C3H6N6·CH2O)x-loaded nanofibers (NFs) sensor membranes by alignment-controllable electrospinning techniques (x–y perpendicular and rotary). The NF-based porous sensor membranes exhibit two- to fivefold improved thermochromic sensitivity (ΔRGB) compared to those of dense film-type sensors at 31.6–42.7 °C. This is attributed to the uniform distribution of dyes throughout the porous NF structure (≈95.7%), which exhibits excellent light transmittance that is 10–30-fold higher than that of film-type sensors. Based on the available shape-conforming synthetic strategies, this article further demonstrates wearable thermochromic sensors in the forms of mask-, patch-, and bracelet-type devices, which can accurately monitor body temperature in real time.
中文翻译：
多孔纳米纤维膜：高灵敏度热致变色传感器的合理平台
热致变色传感器为用肉眼监测局部温度提供了直观和实时的解决方案。传统的热致变色传感器通常使用溶液型或致密膜型平台，这些平台对于将大量染料分子暴露于表面是次优的形态，导致灵敏度低和响应速度缓慢。在此，本文介绍了通过可控排列静电纺丝技术制备负载热致变色染料（C 3 H 6 N 6 ·CH 2 O）x负载纳米纤维（NFs）传感器膜的高灵敏度纳米纤维（NF）传感器膜的合理合成路线。 x - y垂直和旋转）。与致密薄膜型传感器在 31.6–42.7 °C 下相比，基于 NF 的多孔传感器膜的热致变色灵敏度 (ΔRGB) 提高了 2 到 5 倍。这归因于染料在整个多孔 NF 结构中的均匀分布（≈95.7%），其表现出优异的透光率，比薄膜型传感器高 10-30 倍。基于现有的形状符合合成策略，本文进一步展示了面罩式、贴片式和手环式设备形式的可穿戴热致变色传感器，可实时准确监测体温。
更新日期：2022-03-07
中文翻译：
多孔纳米纤维膜：高灵敏度热致变色传感器的合理平台
热致变色传感器为用肉眼监测局部温度提供了直观和实时的解决方案。传统的热致变色传感器通常使用溶液型或致密膜型平台，这些平台对于将大量染料分子暴露于表面是次优的形态，导致灵敏度低和响应速度缓慢。在此，本文介绍了通过可控排列静电纺丝技术制备负载热致变色染料（C 3 H 6 N 6 ·CH 2 O）x负载纳米纤维（NFs）传感器膜的高灵敏度纳米纤维（NF）传感器膜的合理合成路线。 x - y垂直和旋转）。与致密薄膜型传感器在 31.6–42.7 °C 下相比，基于 NF 的多孔传感器膜的热致变色灵敏度 (ΔRGB) 提高了 2 到 5 倍。这归因于染料在整个多孔 NF 结构中的均匀分布（≈95.7%），其表现出优异的透光率，比薄膜型传感器高 10-30 倍。基于现有的形状符合合成策略，本文进一步展示了面罩式、贴片式和手环式设备形式的可穿戴热致变色传感器，可实时准确监测体温。
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