材料科学
荧光
发光
余辉
聚合物
光子学
纳米技术
光电子学
光学
物理
复合材料
伽马射线暴
天文
作者
Hui‐Ying Luo,Yan Guan,Jiang Huang,Zhi‐Wang Luo,Ao Huang,Ping Wang,He‐Lou Xie
标识
DOI:10.1002/adom.202300816
摘要
Abstract Circularly polarized luminescence (CPL) as modern photonic technology is essential for optical apparatuses, anti‐counterfeiting, and information encryption. However, it still faces the formidable challenge of integrating delayed fluorescence into CPL through harvesting the triplet excitons. Herein, a carbonized polymer dot liquid crystal (CPDs‐Chol) is reported that shows both circularly polarized fluorescence (CPF) and circularly polarized delayed fluorescence (CP‐DF). In order to realize the CP‐DF, a kind of CPDs‐Chol is successfully designed and synthesized through grafting cholesterol molecules on the surface of novel carbonized polymer dots (CPDs) possessing long afterglow of 13 s. Then, the resultant CPDs‐Chol is doped with 4‐cyano‐4‐pentylbiphenyl (5CB) in different ratios to fabricate CPL material, which shows the highest g lum of −0.5 and −0.042 for CPF and CP‐DF, respectively. The combination of the CPL feature and the long afterglow of CPDs‐Chol@5CB and CPDs offer an attractive photonic technology with advanced applications in anti‐counterfeiting and information encryption.
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