Reversible visible/near-infrared light responsive thin films based on indium tin oxide nanocrystals and polymer
Reversible visible/near-infrared light responsive thin films based on indium tin oxide nanocrystals and polymer
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DOI：
10.1038/s41598-020-69110-y
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发表时间：
2020-07
影响因子：
4.6
通讯作者：
Jian Wu;Chenzhong Mu;Jinglei Yang
中科院分区：
文献类型：
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作者：
Jian Wu;Chenzhong Mu;Jinglei Yang
在这项研究中，我们设计了一种新型的热响应和光响应纳米复合薄膜的制备通过沉积铟锡氧化物纳米晶体通过涂层的两亲性共聚物的聚己内酯基板（INCP）。通过改变温度以及打开/关闭NIR激光，INCP膜显示可逆的表面形貌变化特性。特别是，当温度从25 °C变化到75 °C时，该薄膜可以在可见光和近红外区域（500- 1，750 nm）将透光率调节到75%到90%。此外，该膜还具有优异的循环性和在不同温度下的热稳定性。研究结果表明，共聚物与PCL在不同热膨胀应变下的耦合作用导致了薄膜曲率的变化，从而导致了薄膜表面形貌的可逆变化。研究结果为今后智能响应材料的制备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。
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.