掺杂染料的胆甾相液晶聚合物网络的圆偏振室温磷光
Circularly Polarized Room-Temperature Phosphorescence from Dye-Doped Cholesteric Liquid Crystalline Polymer Networks.
作者信息
Zhang Wei, Guan Peipei, Zhao Jinghua, Yang Yonggang, Li Hongkun
机构信息
Laboratory of Advanced Optoelectronic Materials, Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and Devices, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
State 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, China.
出版信息
J Phys Chem Lett. 2025 Jan 23;16(3):725-730. doi: 10.1021/acs.jpclett.4c03479. Epub 2025 Jan 12.
Circularly polarized luminescence (CPL) materials have drawn increasing attention for their potential applications in optical displays and chemo/biosensing. Nevertheless, the construction of circularly polarized room-temperature phosphorescence (CPRTP) materials is still a significant challenge. In this work, four liquid crystalline polymer network films with RTP properties have been fabricated via photopolymerization of cholesteric liquid-crystalline mixtures containing different amounts of commercially available dyes. The films show a yellow-green structural color, enhanced RTP, blue CPL, and green CPRTP with phosphorescence dissymmetry factors up to -0.90, quantum yields up to 14.8%, and emission lifetimes up to 607 ms. Furthermore, the prepared film pattern presents different colors in reflective, fluorescent, and phosphorescent modes. This work not only provides a deep understanding of RTP and CPRTP, but also presents a facile strategy to fabricate film patterns for decoration and anticounterfeiting applications.
圆偏振发光（CPL）材料因其在光学显示和化学/生物传感方面的潜在应用而受到越来越多的关注。然而，构建圆偏振室温磷光（CPRTP）材料仍然是一项重大挑战。在这项工作中，通过对含有不同量市售染料的胆甾型液晶混合物进行光聚合，制备了四种具有室温磷光特性的液晶聚合物网络薄膜。这些薄膜呈现出黄绿色结构色、增强的室温磷光、蓝色圆偏振发光和绿色圆偏振室温磷光，磷光不对称因子高达-0.90，量子产率高达14.8%，发射寿命长达607毫秒。此外，制备的薄膜图案在反射、荧光和磷光模式下呈现出不同的颜色。这项工作不仅提供了对室温磷光和圆偏振室温磷光的深入理解，还提出了一种简便的策略来制备用于装饰和防伪应用的薄膜图案。
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