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胆固醇液晶聚合物网络的向上转换循环极化发光与NaYF₄:Yb,Tm UCNP

Liting Xu¹, Yi Li¹, Wei Liu¹

¹State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China. weiliu@suda.edu.cn.

Materials horizons

|October 10, 2024

概括

研究人员通过将升级转换纳米粒子 (UCNPs) 嵌入胆固醇液晶聚合物网络 (CLCN) 膜中,开发了新的升级转换循环偏光 (UC-CPL) 材料. 这些材料显示出先进的防伪和显示技术的潜力.

科学领域:

材料科学材料科学材料科学
光电学是指光电子产品.
纳米技术纳米技术

背景情况:

上转换循环极化发光 (UC-CPL) 是一个有前途的技术,用于防伪和先进的显示器.
上转化纳米粒子 (UCNPs) 是UC-CPL的关键组件,但它们的集成到功能设备中需要仔细的材料设计.
胆固醇液晶聚合物网络 (CLCNs) 提供独特的合光学特性,可以调节极化光.

研究的目的:

通过将UCNP集成到CLCN膜中来合成和描述UC-CPL活性材料.
调查这些复合膜的UC-CPL性能,并探索它们的潜在应用.
为了证明CLCN薄膜对上转换发光的性过效应.

主要方法:

NaYF4:Yb,Tm上转化纳米粒子 (UCNPs) 是使用溶热方法合成的.
UCNP被嵌入到胆固醇液晶聚合物网络 (CLCN) 膜中.
使用圆形偏振器评估UC-CPL性能,并分析了性过效应.

主要成果:

独立的CLCN-UCNPs片实现了g_callum的低值高达0.33.
涂有CLCN-UCNPs的PET薄膜达到了0.43.3的g_callum低值.
一个结合的PMMA-UCNP和CLCN系统显示了1.73的超大g_callum存量值.
灵活的,有图案的CLCN片被制造用于防伪应用.

结论:

通过结合UCNP和CLCN,成功制备了UC-CPL活性材料.
证明了CLCN膜在上转换发光方面具有显著的性过能力.
强调了这些材料在先进的防伪和显示技术方面的潜力.

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