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Highly Efficient Photochromic Tungsten Oxide@PNIPAM Composite Spheres with a Fast Response
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-01-12 , DOI: 10.1021/acsami.0c20817 Qi Zhang 1 , Ruxiu Wang 1 , Yamiao Lu 1 , Yayun Wu 2 , Jinghe Yuan 2 , Jiguang Liu 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-01-12 , DOI: 10.1021/acsami.0c20817 Qi Zhang 1 , Ruxiu Wang 1 , Yamiao Lu 1 , Yayun Wu 2 , Jinghe Yuan 2 , Jiguang Liu 1
Affiliation
Coloration efficiency and a fast response are important in developing materials for optical switching. A novel, highly efficient photochromic tungsten oxide@poly(N-isopropylacrylamide) (PNIPAM) hybrid sphere is reported, whose colors can be rapidly converted between yellow and blue under different lights. The color change can be seen clearly even if the tungsten oxide content in the hybrid sphere is very low, exhibiting outstanding coloration efficiency of tungsten oxide. A photochromic mechanism is proposed in which the amide group in PNIPAM spheres participates in electron injection and the transition of valence states between W5+ and W6+ in the photochromic process. The interaction between tungsten oxide and PNIPAM plays a key role in enhancing the coloration efficiency of tungsten oxide and accelerating the switchable speed of color transformation, which is very useful in developing new photochromic materials. These hybrid spheres can be used in rewritable record displays and have wide potential applications in controlling energy transmittance in smart windows or in detecting UV light in optical sensors.
中文翻译:
快速响应的高效光致变色氧化钨@PNIPAM复合球
着色效率和快速响应对于开发用于光学开关的材料很重要。报道了一种新型的高效光致变色氧化钨@聚(N-异丙基丙烯酰胺)(PNIPAM)杂化球,其颜色可以在不同的光线下快速在黄色和蓝色之间转换。即使杂化球中的氧化钨含量非常低,也可以清楚地看到颜色变化,表现出出色的氧化钨着色效率。提出了一种光致变色机理,其中PNIPAM球中的酰胺基团参与电子注入以及W 5+和W 6+之间的价态转变在光致变色过程中。氧化钨与PNIPAM之间的相互作用在提高氧化钨的着色效率和加快颜色转换的可转换速度方面起着关键作用,这在开发新型光致变色材料中非常有用。这些混合球体可用于可重写记录显示中,在控制智能窗口中的能量透射率或检测光学传感器中的紫外线方面具有广泛的潜在应用。
更新日期:2021-01-27
中文翻译:
快速响应的高效光致变色氧化钨@PNIPAM复合球
着色效率和快速响应对于开发用于光学开关的材料很重要。报道了一种新型的高效光致变色氧化钨@聚(N-异丙基丙烯酰胺)(PNIPAM)杂化球,其颜色可以在不同的光线下快速在黄色和蓝色之间转换。即使杂化球中的氧化钨含量非常低,也可以清楚地看到颜色变化,表现出出色的氧化钨着色效率。提出了一种光致变色机理,其中PNIPAM球中的酰胺基团参与电子注入以及W 5+和W 6+之间的价态转变在光致变色过程中。氧化钨与PNIPAM之间的相互作用在提高氧化钨的着色效率和加快颜色转换的可转换速度方面起着关键作用,这在开发新型光致变色材料中非常有用。这些混合球体可用于可重写记录显示中,在控制智能窗口中的能量透射率或检测光学传感器中的紫外线方面具有广泛的潜在应用。