Helical coassembly enables full-color efficient circularly polarized light emission from carbon dots with high dissymmetry factors

IF 11.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Advances Pub Date : 2025-05-16 DOI:10.1126/sciadv.adt8219

Jinsui Li, Qinghua Tan, Jinyang Li, Wendi Qin, Chenhao Li, Qian Teng, Yuyue Yang, Yifeng Wang, Ye Cao, Yuchen Hu, Jibin Zhang, Fanglong Yuan

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Abstract

Printing materials with circularly polarized light (CPL) emission holds promise for flexible stereoscopic displays and multilevel anticounterfeiting solutions. However, a key challenge lies in developing printable CPL materials that exhibit both high photoluminescence quantum yield (PLQY) and luminescence dissymmetry factor (g_lum) values. In this study, we present the macroscopic and controllable production of efficient full-color CPL carbon dot (CDs) photonic paint materials. These printable CPL materials, consisting of heavy metal-free CDs as emitters, and liquid crystals as host matrices, are produced using a helical coassembly strategy. Our CPL systems based on CDs achieve high PLQY (more than 80%) and g_lum values (more than 1.4), with a figure of merit (a key performance indicator for CPL properties calculated by multiplying PLQY and glum) of 1.12, outperforming other CPL material systems. Furthermore, the full-color CDs-CPL is successfully used for printing flexible circularly polarized luminous patterns and multilevel anticounterfeiting features. This research provides insights into advanced CPL materials, highlighting their broad potential applications.

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螺旋共组装可以实现高不对称系数碳点的全彩色高效圆偏振光发射

具有圆偏振光（CPL）发射的印刷材料有望实现柔性立体显示和多级防伪解决方案。然而，一个关键的挑战在于开发具有高光致发光量子产率（PLQY）和发光不对称因子（glum）值的可印刷CPL材料。在本研究中，我们提出了高效的全彩CPL碳点（CDs）光子涂料材料的宏观可控生产。这些可打印的CPL材料由无重金属cd作为发射体，液晶作为宿主基质组成，采用螺旋共组装策略生产。我们基于cd的CPL系统实现了高PLQY（超过80%）和glum值（超过1.4），其价值指数（通过将PLQY和glum相乘计算出的CPL性能的关键性能指标）为1.12，优于其他CPL材料系统。此外，还成功地将全彩cd - cpl用于柔性圆偏振发光图案的印刷，并具有多层防伪的特点。这项研究提供了对先进CPL材料的见解，突出了其广泛的潜在应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science Advances 综合性期刊-综合性期刊

CiteScore

21.40

自引率

1.50%

发文量

1937

审稿时长

29 weeks

期刊介绍： Science Advances, an open-access journal by AAAS, publishes impactful research in diverse scientific areas. It aims for fair, fast, and expert peer review, providing freely accessible research to readers. Led by distinguished scientists, the journal supports AAAS's mission by extending Science magazine's capacity to identify and promote significant advances. Evolving digital publishing technologies play a crucial role in advancing AAAS's global mission for science communication and benefitting humankind.