氮掺杂高量子产率荧光碳点的制备及其体外生物成像研究

姜杰; 李士浩; 严一楠; 何丹农

doi:10.3788/fgxb20173812.1567

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氮掺杂高量子产率荧光碳点的制备及其体外生物成像研究

材料合成及性能 | 更新时间：2020-08-12

- 氮掺杂高量子产率荧光碳点的制备及其体外生物成像研究
- Preparation of N-doped Fluorescent Carbon Dots with High Quantum Yield for In-vitro Bioimaging
- 发光学报 2017年38卷第12期页码：1567-1574
- 作者机构：
  
  1. 上海交通大学材料科学与工程学院上海,200240
  2. 纳米技术及应用国家工程研究中心上海,200241
- 作者简介：
- 基金信息：
  
  上海市浦江人才项目（15PJ1432200）();国家重点研发计划（2016YFA0201204）();上海市科学技术委员会项目（174419048000）();上海市
- DOI：10.3788/fgxb20173812.1567
  中图分类号： O482.31
- 纸质出版日期：2017-12-5，
  
  收稿日期：2017-4-21，
  
  修回日期：2017-9-7，
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姜杰, 李士浩, 严一楠等. 氮掺杂高量子产率荧光碳点的制备及其体外生物成像研究[J]. 发光学报, 2017,38(12): 1567-1574

JIANG Jie, LI Shi-hao, YAN Yi-nan etc. Preparation of N-doped Fluorescent Carbon Dots with High Quantum Yield for <em>In-vitro</em> Bioimaging[J]. Chinese Journal of Luminescence, 2017,38(12): 1567-1574
姜杰, 李士浩, 严一楠等. 氮掺杂高量子产率荧光碳点的制备及其体外生物成像研究[J]. 发光学报, 2017,38(12): 1567-1574 DOI： 10.3788/fgxb20173812.1567.

JIANG Jie, LI Shi-hao, YAN Yi-nan etc. Preparation of N-doped Fluorescent Carbon Dots with High Quantum Yield for <em>In-vitro</em> Bioimaging[J]. Chinese Journal of Luminescence, 2017,38(12): 1567-1574 DOI： 10.3788/fgxb20173812.1567.

摘要

为获得高量子产率的碳点，以柠檬酸为碳源，苯二胺的3种同分异构体为氮源，采用两步溶剂热法制备了氮掺杂荧光碳点。利用透射电子显微镜（TEM）、紫外-可见吸收光谱（UV-Vis）、荧光光谱、红外光谱（FTIR）、X射线光电子能谱（XPS）对样品进行表征，并考察了碳点的细胞毒性和体外生物成像。实验结果表明：3种高量子产率碳点（

=52%，60.4%，53.2%）的粒径均一，具有较好的分散性，平均尺寸分别为4.5，5.3，5.2 nm。碳点表面含有羟基、羧基、胺基等基团，在紫外光激发下均能发出明亮的蓝色荧光，并具有稳定的荧光性能。细胞实验表明：3种碳点具有较好的生物相容性，能够快速进入细胞并成功应用于细胞的荧光成像。

Abstract

In order to obtain carbon dots with high quantum yield

a simple two-step solvothermal method was used to prepare fluorescent N-doped carbon dots with citric acid as carbon source and three isomers of phenylenediamine as nitrogen source. The carbon dots were characterized by Transmission electron microscopy (TEM)

ultraviolet-visible spectrophotometry (UV-Vis)

fluorescence spectrophotometry

Fourier transform infrared spectra (FTIR)

X-ray photoelectron spectroscopy (XPS)

followed by studying the cytotoxicity and

in-vitro

bioimaging. The results show that three kinds of high quantum yield carbon dots (

=52%

60.4% and 53.2%) possessing uniform size and excellent dispersibility have been successfully prepared

and the average size is 4.5

5.3

5.2 nm. The prepared carbon dots with hydroxyl

carboxyl

amine and other groups on the surface can emit bright blue fluorescence under the excitation of ultraviolet light

holding favorable optical stability at the same time. In addition

the cell imaging experiments indicate that the three kinds of carbon dots have good biocompatibility

capable of rapidly entering cells and successfully applied to fluorescence imaging of cells.

关键词

碳点高量子产率体外生物成像

Keywords

carbon dotshigh quantum yieldin-vitro bioimaging

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