化学
热重分析
聚合
扫描电子显微镜
聚(N-异丙基丙烯酰胺)
石墨烯
傅里叶变换红外光谱
分析化学(期刊)
相(物质)
链式转移
元素分析
选择性
自由基聚合
化学工程
色谱法
聚合物
共聚物
有机化学
材料科学
催化作用
复合材料
工程类
作者
Qiurong Luo,Zhaohui Zhong,Yunchao Zheng,Die Gao,Zhining Xia,Lujun Wang
出处
期刊:Talanta
[Elsevier]
日期:2021-03-01
卷期号:224: 121869-121869
被引量:25
标识
DOI:10.1016/j.talanta.2020.121869
摘要
The poly(N-isopropylacrylamide) (NIPAAm) was first polymerized onto the surface of graphene quantum dots (GQDs) functionalized silica as packing materials via reversible addition-fragmentation chain transfer (RAFT) polymerization reaction, which can expand the interaction modes between stationary phase and analytes. A series of characteristic methods were selected to estimate the chemical bonding results of silica, involving Fourier transform infrared spectroscopy (FT-IR), elemental analysis (EA), thermogravimetric analysis (TGA) and scanning electron microscope (SEM). The prepared column can exhibit reversed-phase and hydrophilic interaction modes, which were demonstrated by the retention of eight kinds of target analytes with different Log P values. The column was then applied to separate banlangen granules and further verified by HPLC tandem time-of-flight mass spectrometry (HPLC/QTOF-MS). In conclusion, Sil-GQDs-PNIPAAm stationary phase improved the analysis range and performance of traditional phases, exhibiting flexible selectivity and application prospect for both hydrophobic and hydrophilic analytes.
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