Room-Temperature Synthesis of Inorganic-Organic Hybrid Coated VO2 Nanoparticles for Enhanced Durability and Flexible Temperature-Responsive Near-Infrared Modulator Application.
Room-Temperature Synthesis of Inorganic-Organic Hybrid Coated VO2 Nanoparticles for Enhanced Durability and Flexible Temperature-Responsive Near-Infrared Modulator Application.
复制标题
DOI：
10.1021/acsami.8b19881
复制
发表时间：
2019-02
影响因子：
9.5
通讯作者：
Shuwen Zhao;Ying Tao;Yunxiang Chen;Yijie Zhou;Rong Li;L. Xie;Aibin Huang;P. Jin;Shidong Ji-Shidon
中科院分区：
文献类型：
--
作者：
Shuwen Zhao;Ying Tao;Yunxiang Chen;Yijie Zhou;Rong Li;L. Xie;Aibin Huang;P. Jin;Shidong Ji-Shidon
二氧化钒通过自生金属-绝缘体的转变，具有显著的温度响应红外调制能力，是一种理想的传感器红外调制剂。然而，化学稳定性差和被广泛研究的应用范围狭窄(如智能窗)的不利因素制约了其大规模生产。在这里，我们提出了一种VO2@MgF2@PDA无机-有机杂化涂层结构，在恒温(60°C)和相对湿度(90%)下老化1000h后，在λ=1200 nm处，室温和高温之间的透过率差变化在20%以内(从25%下降到20.1%)，大大提高了光学耐久性。此外，基于所合成的耐久性增强纳米粒子，我们将VO2基近红外调制器与上转换荧光材料相结合，制备了一种可用于温度场荧光成像的柔性传感器。此外，对VO2@MgF2核壳纳米粒子的形成机理进行了详细的研究。无机-有机结合策略为提高纳米粒子的稳定性开辟了一条新的途径，而基于VO2的柔性温度-荧光传感器的使用是在复杂和丘脑表面进行远程快速温度场分布成像的一种很有前途的技术。
Vanadium dioxide is one kind of desirable infrared modulator for sensors because of its remarkable temperature-responsive infrared modulation ability via autogeneic metal-insulator transition. However, the detriments of poor chemical stability and narrow scope of extensive-researched application (e.g., smart windows) restrict its mass production. Here, we propose a VO2@MgF2@PDA inorganic-organic hybrid coated architecture for greatly enhancing the optical durability more than 13 times in contrast to pristine VO2 and the transmittance difference between room and high temperature changed within 20% (decreasing from 25 to 20.1%) at λ = 1200 nm after the ageing time of 1000 h at constant temperature (60 °C) and relative humidity (90%). Furthermore, based on the as-synthesized durability-enhanced nanoparticles, we fabricated a flexible sensor for temperature-field fluorescence imaging by integrating the VO2-based near-infrared modulator with the upconversion fluorescence material. Additionally, the formation mechanism of VO2@MgF2 core-shell nanoparticles was studied in detail. The inorganic-organic combination strategy paves a new way for improving the stability of nanoparticles, and the use of VO2-based flexible temperature-fluorescence sensors is a promising technique for remote and swift temperature-field distribution imaging on complicated and campulitropal surfaces.