Wu Jian, Mu Chenzhong, Yang Jinglei
Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
State Key Laboratory of Special Functional Waterproof Materials, Beijing Oriental Yuhong Waterproof Technology Co., Ltd, Beijing, 100123, China.
Sci Rep. 2020 Jul 30;10(1):12808. doi: 10.1038/s41598-020-69110-y.
In this study, we design a novel thermo- and photo-responsive nanocomposite film prepared by depositing indium tin oxide nanocrystals via the coating of amphiphilic copolymer on polycaprolactone substrates (INCP). The INCP film shows reversible surface morphology change properties by changing temperature as well as turning ON/OFF NIR laser. Especially, as the temperature changes from 25 to 75 °C, the film could regulate light transmittance from 75 to 90% across the visible and near-infrared region (500-1,750 nm). In addition, the film also exhibits excellent recycle and thermal stability at different temperature. Our results reveal that reversible surface morphology change properties are caused by curvature adjustment of film, which is owing to the coupling effect between copolymer and PCL with different thermal expansion strains. Our results suggest a possible strategy for the preparation of smart responsive materials in the future, which provides a reference for the development of new energy-saving materials.
在本研究中，我们设计了一种新型的热响应和光响应纳米复合薄膜，该薄膜通过在聚己内酯基底上涂覆两亲共聚物来沉积氧化铟锡纳米晶体（INCP）制备而成。INCP薄膜通过改变温度以及开启/关闭近红外激光，展现出可逆的表面形态变化特性。特别是，当温度从25℃变化到75℃时，该薄膜能够在可见光和近红外区域（500 - 1750nm）将透光率从75%调节到90%。此外，该薄膜在不同温度下还表现出优异的循环利用性能和热稳定性。我们的研究结果表明，可逆的表面形态变化特性是由薄膜的曲率调整引起的，这归因于共聚物与具有不同热膨胀应变的聚己内酯之间的耦合效应。我们的研究结果为未来制备智能响应材料提供了一种可能的策略，为新型节能材料的开发提供了参考。
