高等学校化学学报 ›› 2016, Vol. 37 ›› Issue (5): 810.doi: 10.7503/cjcu20160006

• 研究论文: 无机化学 • 上一篇    下一篇

β-Ga2O3∶Cr3+近红外长余辉纳米颗粒的制备及发光性能

阿不都卡德尔·阿不都克尤木(), 热娜古丽·阿不都热合曼, 艾力江·吐尔地, 阿迪力·麦麦提伊敏   

  1. 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自治区重点实验室, 喀什 844007
  • 收稿日期:2016-01-05 出版日期:2016-05-10 发布日期:2016-04-22
  • 作者简介:联系人简介: 阿不都卡德尔·阿不都克尤木, 男, 博士, 副教授, 主要从事功能纳米材料的合成与应用研究. E-mail:abdukadera@sina.com
  • 基金资助:
    国家自然科学基金(批准号: 21565017)、 新疆维吾尔自治区高校科研计划项目(批准号: XJEDU2014I038)和喀什大学校内课题基金(批准号: 14-2500)资助

Synthesis and Photoluminescence Properties of β-Ga2O3∶Cr3+ Persistent Luminescence Nanoparticles with Near-infrared Afterglow

ABDUKAYUM Abdukader*(), ABDURAHMAN Renagul, TUERDI Ailijiang, MAMATIMIN Adil   

  1. Xinjiang Laboratory of Native Medicinal and Edible Plant Resources Chemistry, College of Chemistry and Environmental Science, Kashgar University, Kashgar 844007, China
  • Received:2016-01-05 Online:2016-05-10 Published:2016-04-22
  • Contact: ABDUKAYUM Abdukader E-mail:abdukadera@sina.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21565017), the Scientific Research Program of the Higher Education Institution of Xinjiang, China(No;XJEDU2014I038) and the Research Foundation of Kashgar University, China(No.14-2500)

摘要:

以三乙二醇为表面配体, 利用沉淀法制备了β-Ga2O3∶Cr3+近红外(NIR)长余辉纳米颗粒. 考察了反应条件对β-Ga2O3∶Cr3+的发光性能和晶体结构的影响, 并初步探讨了其NIR余辉发光机理. 结果表明, 当溶液的pH值为7, 煅烧温度为700 ℃时, 可获得高纯度的β-Ga2O3∶Cr3+纳米颗粒, 其平均粒径为30 nm, 最大余辉发射波长可调控为750 nm, NIR余辉发光时间长于384 h. 本方法得到的β-Ga2O3∶Cr3+长余辉纳米颗粒不仅尺寸小, 而且NIR余辉时间长, 发射波长可调控, 在低背景噪音的深组织活体成像中具有潜在的应用前景.

关键词: 氧化镓, 纳米颗粒, 长余辉发光, 近红外, 光学成像

Abstract:

Cr3+ doped gallium oxide(β-Ga2O3∶Cr3+) nanoparticles with near infrared(NIR) persistent luminescence properties were prepared by a facile precipitation method with triethylene glycol as a surface ligand. The persistent luminescence properties and crystal structure of the Ga2O3∶Cr3+ nanoparticles highly depended on pH value of the reaction solution and the sintering temperature. The experimental results showed that pure β-Ga2O3∶Cr3+ nanocrystal with small grain size(ca. 30 nm) was obtained after pH value of the reaction solution was adjusted to 7 with ammonium hydroxide, and calcined in air at 700 ℃ for 3 h. The maximum afterglow emission wavelength of the β-Ga2O3∶Cr3+ nanoparticles was 750 nm, which was controlled by the reaction conditions. The NIR afterglow time of the β-Ga2O3∶Cr3+ nanoparticles was estimated to be longer than 384 h. The β-Ga2O3∶Cr3+ persistent luminescence nanoparticles with small size, long NIR afterglow time and controllable emission band have great potential application in low background noise and deep tissue in-vivo imaging.

Key words: Gallium oxide, Nanoparticles, Persistent luminescence, Near-infrared afterglow, Optical imaging

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