一锅煮串联合成方法在荧光碳点识别基团调控中的研究

王梅梅; 李莉; 陈琦栋; 王欢欢

doi:10.37188/fgxb20204108.0954

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一锅煮串联合成方法在荧光碳点识别基团调控中的研究

材料合成及性能 | 更新时间：2020-09-10

- 一锅煮串联合成方法在荧光碳点识别基团调控中的研究
- Investigation of Receptor Tailoring on Fluorescent Carbon Dots in One-pot Sequential Reactions
- 发光学报 2020年41卷第8期页码：954-963
- 作者机构：
  
  新疆农业大学化学工程学院, 新疆乌鲁木齐 830052
- 作者简介：
  
  [ "王梅梅(1995-), 女, 新疆阿克苏人, 硕士研究生, 2017年于新疆农业大学获得学士学位, 主要从事碳纳米材料制备的研究。E-mail:wmmgt@qq.com" ]
  [ "王欢欢(1984-), 男, 河南鹿邑人, 博士, 副教授, 硕士研究生导师, 2011年于中国科学院化学研究所获得博士学位, 主要从事光电功能材料的研究。E-mail:270005976@qq.com" ]
- 基金信息：
  
  Scientific Research Program of The Higher Education Institution of Xinjiang
- DOI：10.37188/fgxb20204108.0954
  中图分类号： O482.31
- 纸质出版日期：2020-8，
  
  收稿日期：2020-4-1，
  
  录用日期：2020-4-30
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王梅梅, 李莉, 陈琦栋, 等. 一锅煮串联合成方法在荧光碳点识别基团调控中的研究[J]. 发光学报, 2020,41(8):954-963.

Mei-mei WANG, Li LI, Qi-dong CHEN, et al. Investigation of Receptor Tailoring on Fluorescent Carbon Dots in One-pot Sequential Reactions[J]. Chinese Journal of Luminescence, 2020,41(8):954-963.
王梅梅, 李莉, 陈琦栋, 等. 一锅煮串联合成方法在荧光碳点识别基团调控中的研究[J]. 发光学报, 2020,41(8):954-963. DOI： 10.37188/fgxb20204108.0954.

Mei-mei WANG, Li LI, Qi-dong CHEN, et al. Investigation of Receptor Tailoring on Fluorescent Carbon Dots in One-pot Sequential Reactions[J]. Chinese Journal of Luminescence, 2020,41(8):954-963. DOI： 10.37188/fgxb20204108.0954.

摘要

二氨基脲嘧啶作为前驱体，经两步串联反应制备了两种具有不同配体结构的荧光碳点（CDs）。X射线光电子能谱与红外光谱分析揭示了两种碳点的配体结构特征。第一步所得的碳点（CD

）具有尿嘧啶结构典型的氢键给体-NH和受体-C[FY=，1]O基团特征。发射光谱表现出具浓度依赖性的波长红移特点，同时该碳点对银和汞离子具有很强的亲和特性。第二阶段在碱性水解条件下，CD

尿嘧啶配体易于转化为氨基和羧基等水溶性基团。该碳点（CD

）在水相中没有任何聚集行为，也没有发射波长浓度依赖特性。同时，作为荧光传感器，CD

显示对金属镍离子具有特异性荧光猝灭。总之，可调控的结构特征与传感特性验证了一锅串联反应合成碳点的有效性，为碳点的可控合成提供了新的合成范式。

Abstract

A two-steps sequential reaction with diaminouracil as precursor was implemented to produce two types carbon dots(CDs) with distinctive ligands. The structural information of ligands on CDs in each step was obtained by XPS and FT-IR. It revealed that the carbon dots(denoted as CD

) directly produced in first stage beard uracil moiety with typical hydrogen bond donor -NH and acceptor -C[FY=

1]O. CD

displayed concentration dependent emission bathochromic shift. In addition

the dots' high affinity towards silver and mercury confirmed the presence of uracil receptor. In the second stage

it gradually converted to a form of dots with zwitterion symbol(denoted as CD

). Under alkaline condition

uracil receptor converted to amine and carboxyl moieties in CD

. The transformation of the receptor formed an aqueous solution of CD

without any aggregate behavior. And no evident peak-shifted fluorescence was observed. When used as a fluorescent indicator

the CD

displayed fluorescence turn-off upon the addition of nickel. Therefore

tailorable structures and binding properties of the two dots revealed the implement of one-pot sequential reactions

which provides a new access for controllable synthesis of carbon dots.

关键词

碳点聚集配体荧光传感

Keywords

carbon dots(CDs)aggregatesreceptorfluorescent indicator

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