Highly efficient room temperature phosphorescent liquid crystalline polymer optical waveguides for advanced optoelectronics  

作　　者：Jie Li Yan Guan Wei Xia Jin-Kang Chen Jiang Huang Yi Chen Qi Lin Er-Qiang Chen He-Lou Xie 

机构地区：[1]Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education,and Key Laboratory of Advanced Functional Polymer Materials of Colleges,Universities of Hunan Province and College of Chemistry,Xiangtan University,Xiangtan 411105,China [2]School of Physics and Optoelectronics,Xiangtan University,Xiangtan 411105,China [3]Beijing National Laboratory for Molecular Sciences,Key Laboratory of Polymer Chemistry and Physics of Ministry of Education,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,China

出　　处：《Science China Chemistry》2024年第10期3450-3457,共8页中国科学（化学英文版）

基　　金：financially supported by the National Natural Science Foundation of China(22275158,21975215 and 51921002);the Key Research and Development Program of Hunan Province of China(2023GK2031);the Funding Project of Furong Scholars Award Program;Xiangtan University-Zhuzhou Feilu High-tech Material Technology Co.,Ltd.;the Joint Training Base of Industry-Education Integration of Graduate Students。

摘　　要：Active organic optical waveguide materials(OOWMs)incorporating room temperature phosphorescence(RTP)hold significant promise for diverse applications in photonic and optoelectronic devices.Despite this potential,realizing active RTP optical waveguides with large-sized ordered structures and minimal light loss remains a formidable challenge.To address this issue,we present a groundbreaking thermoplastic active OOWM with low light loss,leveraging room temperature phosphorescent liquid crystalline polymer(LCP).This innovative material can be easily synthesized through the copolymerization of phosphorescent and liquid crystalline monomers.The resulting RTP copolymer exhibits a nematic liquid crystal phase with a phosphorescence lifetime of approximately 0.15 ms and an afterglow duration of around 1 second.Leveraging the excellent processability of LCP,we successfully produce meter-scale fibers via melt spinning.These RTP LCP fibers,characterized by a high orientation of mesogens along the fiber axis,demonstrate superior light confinement and efficient light conduction compared to unoriented samples,resulting in a low optical loss coefficient of 0.13 dB/mm.Furthermore,the thermal responsiveness of the RTP LCP optical waveguide enables its use as a photo switch.This pioneering work paves the way for the design of new OOWMs tailored for advanced photonics and optoelectronics devices.

关 键 词：room temperature phosphorescence liquid crystalline polymer active optical waveguide 

分 类 号：O631[理学—高分子化学] O753.2[理学—化学]