高等学校化学学报 ›› 2019, Vol. 40 ›› Issue (6): 1288-1292.doi: 10.7503/cjcu20190182

• 高分子化学 • 上一篇    下一篇

一步水热法制备铜掺杂纳米碳点及其在白光器件中的应用

董向阳, 牛晓青, 魏济时, 熊焕明()   

  1. 复旦大学化学系, 上海市分子催化和功能材料重点实验室, 上海 200433
  • 收稿日期:2019-03-27 出版日期:2019-06-10 发布日期:2019-05-24
  • 作者简介:

    联系人简介: 熊焕明, 男, 博士, 教授, 博士生导师, 主要从事功能型纳米杂化材料研究. E-mail: hmxiong@fudan.edu.cn

  • 基金资助:
    国家自然科学基金(批准号: 21771039)和上海市科学技术委员会专项基金(批准号: 16DZ2270100)资助.

One-step Hydrothermal Synthesis of Copper Doped Carbon Dots and Their Application in White Light Devices

DONG Xiangyang, NIU Xiaoqing, WEI Jishi, XIONG Huanming()   

  1. Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433, China
  • Received:2019-03-27 Online:2019-06-10 Published:2019-05-24
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21771039) and the Special Program of the Shanghai Science and Technology Committee, China(No.16DZ2270100).

摘要:

以一水合乙酸铜和苯胺为原料, 合成了铜掺杂纳米碳点(Cu-CDs). 通过优化实验参数, 确定了合成Cu-CDs的最佳反应时间、 反应温度和原料摩尔比分别为5 h, 210 ℃和1∶1. 与相同条件下的对照实验相比, Cu的掺杂使碳点(CDs)的荧光强度明显提高, 并实现了良好的多色发光性能. 在365 nm紫外光激发下, Cu-CDs可直接发射强烈的白光. 进一步与紫外发光二极管(LED)芯片结合, 得到白色发光器件, 色坐标为(0.337, 0.337), 非常接近纯白光的色坐标(0.33, 0.33). 这种制备Cu-CDs材料的方法及突出的白光发射性能, 拓宽了碳点在发光器件中的应用.

关键词: 铜掺杂纳米碳点, 水热法, 缩聚反应, 白光器件

Abstract:

Copper doped carbon dots(Cu-CDs) were synthesized with aniline and copper acetate as raw materials. Through the optimization of experimental parameters, the optimal reaction time, reaction temperature and molar ratio of raw materials for Cu-CDs synthesis were 5 h, 210 ℃ and 1∶1, respectively. Comparing with the control group under the same conditions, it is found that the doping of Cu significantly improves the fluorescence intensity of CDs and achieves good multicolor luminescence performance. Cu-CDs can directly emit strong white light under 365 nm ultraviolet excitation. The white light emitting device is obtained with chromaticity coordinates of (0.337, 0.337) by further combining Cu-CDs with the ultraviolet light emitting diode(LED) chip. This method of preparing Cu-CDs materials in large quantity and its outstanding white light emitting performance have broaden the application of carbon dots in light emitting devices.

Key words: Copper doped carbon dots, Hydrothermal method, Polycondensation reaction, White light device

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