Catalytic activity of Schiff base monocrystal and its application for colorimetric detection of dopamine

In this work, we used 2-amino-4-methylphenol and terephthalaldehyde as reactants to synthesize a new type of Schiff base crystal (MAPTPA). It is yellow with an empirical formula of C 22 H 20 N 2 O 2 . The synthesized MAPTPA exhibits an intrinsic visible light-induced oxidase-like catalytic activity...

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Veröffentlicht in:Chemical papers 2021-03, Vol.75 (3), p.1259-1266
Hauptverfasser: Weng, Qinghua, Chen, Shuyu, Yi, Jinquan, Huang, Siqi, Wang, Jiaye, Wang, Fei, Shang, Xing, Kang, Jie, Han, Zhizhong
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container_end_page 1266
container_issue 3
container_start_page 1259
container_title Chemical papers
container_volume 75
creator Weng, Qinghua
Chen, Shuyu
Yi, Jinquan
Huang, Siqi
Wang, Jiaye
Wang, Fei
Shang, Xing
Kang, Jie
Han, Zhizhong
description In this work, we used 2-amino-4-methylphenol and terephthalaldehyde as reactants to synthesize a new type of Schiff base crystal (MAPTPA). It is yellow with an empirical formula of C 22 H 20 N 2 O 2 . The synthesized MAPTPA exhibits an intrinsic visible light-induced oxidase-like catalytic activity without the use of destructive H 2 O 2 . The results show that dissolved oxygen plays an important role in the catalytic reaction process and 1 O 2 is the crucial reactive species responsible for TMB oxidation. The results of Michaelis–Menten kinetics demonstrate that MAPTPA has high substrate affinity and catalytic efficiency. Based on the catalytic activity of MAPTPA, we developed a sensitive visual sensing strategy for dopamine (DA) detection. A high linear relationship is observed in the range of 0.01–100 μM with a detection limit (LOD) of 6.70 nM. Therefore, the as-prepared Schiff base monocrystal may be used as an oxidase mimic for life sciences in the future, such as biosensor, biosynthesis, photodynamic therapy, etc.
doi_str_mv 10.1007/s11696-020-01381-1
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subjects Biochemistry
Biosensors
Biosynthesis
Biotechnology
Catalytic activity
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Colorimetry
Dopamine
Hydrogen peroxide
Imines
Industrial Chemistry/Chemical Engineering
Materials Science
Medicinal Chemistry
Original Paper
Oxidase
Oxidation
Photodynamic therapy
Single crystals
Substrates
title Catalytic activity of Schiff base monocrystal and its application for colorimetric detection of dopamine
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