Chiral voltammetric sensor for tryptophan enantiomers by using a self-assembled multiwalled carbon nanotubes/polyaniline/sodium alginate composite | |
Niu, Xiaohui1; Yang, Xing2; Li, Hongxia1; Shi, Qiuyun1; Wang, Kunjie1 | |
2021-05 | |
发表期刊 | CHIRALITY |
ISSN | 0899-0042 |
卷号 | 33期号:5页码:248-260 |
摘要 | Due to the crucial role of amino acids in life sciences and pharmaceutics, identification of optical amino acid molecules is of great significance. In this study, the two materials (CNT and PANI) were combined together to obtain the magnification of electrochemical signal by substrate material (CNT/PANI). Then a self-assembled multiwalled carbon nanotubes/polyaniline/sodium alginate (CNT/PANI/SA) nanocomposite with chiral sites and conductive material was synthesized as the electrochemical sensing interface. Next, a novel electrochemical sensing interface was fabricated via modifying the as-prepared chiral material on a polished glassy carbon electrode (CNT/PANI/SA/GCE) for precisely, efficiently, and rapidly differentiation of tryptophan (Trp) enantiomers. It was observed that CNT/PANI/SA/GCE showed desirable stereoselective recognition effect in the variety of signal strength to peak current (Ip) to the different optical activity of Trp enantiomers. In the case of optimal conditions, the peak current ratio in the solution of l-Trp and d-Trp (I-D/I-L) was observed to be 2.1 at CNT/PANI/SA/GCE by differential pulse voltammogram (DPV). UV-visible spectroscopy further showed that CNT/PANI/SA had a greater binding energy to l-Trp. Also different factors affecting the enantioselectivity of CNT/PANI/SA/GCE, such as the incubation time, pH, and dropcoating volume of CNT/PANI/SA were optimized. Moreover, the proposed CNT/PANI/SA/GCE showed excellent specific stereoselectivity and anti-interference ability. Besides, the proposed chiral sensing platform can be effectively applied in real samples to detect Trp enantiomers sensitively. This work inspires us a new path for the preparation of substrate material with excellent electrical conductivity, as well as extend its application potential in chiral recognition. |
关键词 | chiral composite electrochemical sensing interface molecule recognition self‐ assembly sodium alginate |
DOI | 10.1002/chir.23305 |
收录类别 | SCIE ; SCOPUS |
语种 | 英语 |
WOS研究方向 | Pharmacology & Pharmacy ; Chemistry |
WOS类目 | Chemistry, Medicinal ; Chemistry, Analytical ; Chemistry, Organic ; Pharmacology & Pharmacy |
WOS记录号 | WOS:000625657500001 |
出版者 | WILEY |
来源库 | WOS |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/148326 |
专题 | 石油化工学院 |
通讯作者 | Wang, Kunjie |
作者单位 | 1.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou, Peoples R China; 2.Sichuan Univ, State Key Lab Polymer Mat Engn, Coll Polymer Sci & Engn, Chengdu, Peoples R China |
第一作者单位 | 石油化工学院 |
通讯作者单位 | 石油化工学院 |
第一作者的第一单位 | 石油化工学院 |
推荐引用方式 GB/T 7714 | Niu, Xiaohui,Yang, Xing,Li, Hongxia,et al. Chiral voltammetric sensor for tryptophan enantiomers by using a self-assembled multiwalled carbon nanotubes/polyaniline/sodium alginate composite[J]. CHIRALITY,2021,33(5):248-260. |
APA | Niu, Xiaohui,Yang, Xing,Li, Hongxia,Shi, Qiuyun,&Wang, Kunjie.(2021).Chiral voltammetric sensor for tryptophan enantiomers by using a self-assembled multiwalled carbon nanotubes/polyaniline/sodium alginate composite.CHIRALITY,33(5),248-260. |
MLA | Niu, Xiaohui,et al."Chiral voltammetric sensor for tryptophan enantiomers by using a self-assembled multiwalled carbon nanotubes/polyaniline/sodium alginate composite".CHIRALITY 33.5(2021):248-260. |
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