Coatable 2D Conjugated Polymers Containing Bulky Macromolecular Guests for Thermal Imaging
Coatable 2D Conjugated Polymers Containing Bulky Macromolecular Guests for Thermal Imaging
复制标题
用于热成像的含有大分子客体的可涂层二维共轭聚合物
DOI：
10.1021/acsami.2c12909
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发表时间：
2022
影响因子：
9.5
通讯作者：
and Yuya Oaki
中科院分区：
文献类型：
--
作者：
Aya Edagawa;Satoru Matsuda;Hirofumi Kawakubo;Hiroaki Imai;and Yuya Oaki
动态特性源于2D聚合物的结构灵活性。软化层状结构具有调节和增强动态性能的潜力。在本工作中，通过不同支化结构的层间聚合物客体来调节层状聚二乙炔(PDA)的柔性。PDA通过缩短分子运动的有效共轭长度而表现出温敏的变色特性。对于没有层间客体的层状PDA，在一定的阈值温度下观察到蓝色到红色的转变，而大体积聚合物客体的插层降低了起始温度，拓宽了热响应性颜色变化的温度范围。由此产生的PDA和大体积聚合物的层状复合材料在厘米级的衬底上提供了均匀的涂层。将热敏变色涂层应用于温度分布成像。液体的比热是用瓶子上的涂层比色法估算的。丝布上的涂层使用超声波凝固切割设备在手术过程中可视化模拟组织上的温度分布。该涂层可应用于各种领域的热成像。此外，软化策略有助于探索软2D材料的动态特性。
Dynamic properties are derived from the structural flexibility of 2D polymers. Softening layered structures has the potential for tuning and enhancing the dynamic properties. In the present work, the flexibility of layered polydiacetylene (PDA) is tuned by the interlayer polymeric guests with different branching structures. PDA shows thermoresponsive color-change properties through shortening the effective conjugation length with molecular motion. Whereas the blue-to-red color transition is observed at certain threshold temperatures for the layered PDA without the interlayer guest, the intercalation of the bulky polymer guests lowers the starting temperature and widens the temperature range for the thermoresponsive color changes. The resultant layered composite of PDA and bulky polymer affords the homogeneous coating on substrates on the centimeter scale. The thermoresponsive color-change coating is applied to temperature-distribution imaging. The specific heat of liquids is colorimetrically estimated using the coating on the bottle. The coating on a silk cloth visualizes the temperature distribution on a simulated tissue during surgical operation using an ultrasonic coagulation cutting device. The coating can be applied to thermal imaging in a variety of fields. Moreover, the softening strategy contributes to explore dynamic properties of soft 2D materials.