喀什大学化学与环境科学学院新疆特色药食用植物资源化学实验室，新疆 喀什 844006
利用高温固相法制备了BaGa2O4∶Cr3+，Sm3+（BGO∶Cr，Sm）近红外长余辉发光（PersL）材料，考察了Sm3+掺杂浓度和煅烧温度对BGO∶Cr，Sm晶体结构和发光性能的影响，初步探讨了近红外余辉发光机理。结果表明：当长余辉发光材料组成为BGO∶Cr0.06，Sm0.004且煅烧温度为1100 ℃时，可以获得高纯度的BGO∶Cr，Sm长余辉发光材料，其发射波长为734 nm。Cr3+与Sm3+共掺杂为应用于生物成像的BGO提供了优化策略，同时为开发长余辉发光材料提供了良好范例。
材料 近红外光 长余辉发光 Sm3+掺杂 镓酸钡
Author Affiliations
Abstract
Xinjiang Laboratory of Native Medicinal and Edible Plant Resources Chemistry, College of Chemistry and Environmental Sciences, Kashi University, Kashi 844007, China
The near-infrared (NIR) emitting wavelength-tunable -doped barium gallate (BGO:Cr) persistent luminescence (PersL) phosphors with enhanced luminescence were reported. The emission wavelength of the BGO:Cr PersL phosphors was adjusted from 715 to 739 nm by varying the amount of and the ratio of Ga:Ba. Meanwhile, the luminescence intensity and afterglow of the BGO:Cr PersL phosphors were enhanced. BGO:Cr PersL phosphors exhibited UV excitation, LED light restimulation, PersL for more than 6 days, and excellent capability for information storage, which was expected to promote the development of cheap and wavelength-tunable PersL materials for practical applications.
persistent luminescence Cr3+ doping barium gallate Chinese Optics Letters
2022, 20(3): 031602
喀什大学化学与环境科学学院新疆特色药食用植物资源化学实验室, 新疆 喀什 844000
长余辉纳米颗粒(PLNPs)因其独特而卓越的发光现象,可实现无损伤、无背景干扰的成像、检测及诊疗。PLNPs的发光中心决定其发射波长。以Cr 3+为发光中心的PLNPs由于发出近红外(NIR)光,组织穿透性良好,具有NIR光可激励的超强的持久余辉(PL)等优点,在生物医学研究中得到广泛应用。对Cr-PLNPs在生物检测、成像及多种治疗领域中的应用研究成果进行评述,分析了Cr-PLNPs研究领域存在的问题和挑战,指出了该领域的未来研究方向。
医用光学 长余辉纳米颗粒 Cr
3+ 生物成像 诊疗一体化 激光与光电子学进展
2021, 58(8): 0800003
