Cheng Haoge, Liu Qiongxia, Han Shengpeng, Zhang Shuai, Ouyang Xiao, Wang Xun, Duan Zhilong, Wei Hao, Zhang Xinyue, Ma Ning, Xue Mianqi
College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
ACS Appl Mater Interfaces. 2020 Aug 19;12(33):37637-37646. doi: 10.1021/acsami.0c13215. Epub 2020 Aug 6.
Photothermal conversion behavior has a vital application to disease therapy, water purification, or uncontacted heaters. The fabrication of high-performance photothermal conversion materials especially for near-infrared (NIR) light and microstructures has attracted a great deal of attention. Among numerous substances, MXene as a new type of 2D material with semi-metallic and unique electromagnetic properties presents a broader absorption of light and even a typical plasmonic absorption near the NIR-I area (808 nm), which has made it suitable for photothermal conversion. Here, we propose a facile approach for preparing a TiCT/ionic liquid ink with a high photothermal conversion efficiency. The as-prepared ink has showed good wettability of various substrates as well as the high sensitivity of 808 nm NIR light irradiation and a wide range of thermal variation. After packing the ink into a gel pen refill, the flexible thermal chips could be easily obtained just by pen writing on the soft surface with the designed size, which also have become an optimal candidate for the thermal alarm system.
光热转换行为在疾病治疗、水净化或非接触式加热器方面有着至关重要的应用。高性能光热转换材料的制备，尤其是用于近红外（NIR）光和微结构的材料，已经引起了广泛关注。在众多物质中，MXene作为一种新型二维材料，具有半金属和独特的电磁特性，对光具有更广泛的吸收，甚至在近红外I区域（808 nm）呈现典型的等离子体吸收，这使其适用于光热转换。在此，我们提出一种简便的方法来制备具有高光热转换效率的TiCT/离子液体墨水。所制备的墨水对各种基材表现出良好的润湿性，以及对808 nm近红外光照射的高灵敏度和宽范围的热变化。将墨水装入凝胶笔芯后，只需用该笔在具有设计尺寸的柔软表面上书写，就能轻松获得柔性热芯片，这些芯片也已成为热报警系统的最佳候选材料。
