PMID- 30075383 OWN - NLM STAT- MEDLINE DCOM- 20190207 LR - 20190215 IS - 1873-4235 (Electronic) IS - 0956-5663 (Linking) VI - 118 DP - 2018 Oct 30 TI - Metal-organic framework-based molecularly imprinted polymer as a high sensitive and selective hybrid for the determination of dopamine in injections and human serum samples. PG - 129-136 LID - S0956-5663(18)30549-9 [pii] LID - 10.1016/j.bios.2018.07.047 [doi] AB - A highly sensitive and selective molecular imprinting polymer (MIP) sensor was fabricated based on polypyrrole (PPy)/ZIF-67/Nafion hybrid modified glassy carbon electrode (GCE) for the determination of dopamine (DA). The ZIF-67 material was facilely prepared by using hydrothermal synthesis method; subsequently, the PPy/ZIF-67/Nafion hybrid was obtained through a one-pot synthesis method. The physical properties of the materials and the modified sensors were investigated by using X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Nitrogen adsorption-desorption isothermal (BET), X-ray photoelectron spectroscopy (XPS), Scanning electron microscope (SEM) and Atomic force microspectroscopy (AFM) apparatus. Cyclic voltammetry (CV), differential pulse voltammetry (DPV) and electrochemical impedance spectroscope (EIS) were used to evaluate the electrochemical performance of the sensors. The influence factors controlling the performance of the MIP sensor were studied and included scan rate, pH value and scan cycles. Under optimal conditions, DPV peak was linearly related to DA concentration over two concentration intervals (0.08-100 microM and 100-500 microM). The detection limit of PPy/ZIF-67-MIPs/Nafion/GCE sensor for DA was 0.0308 microM (S/N = 3) and sensitivity was equal to 1.656 microA microM cm(-2). Furthermore, good reproducibility, long-term stability and favorable selectivity were obtained in the experiment. Moreover, the fabricated MIP sensor was successfully applied in the determination of DA concentrations in injection and human serum samples with satisfactory recoveries. CI - Copyright (c) 2018 Elsevier B.V. All rights reserved. FAU - Zhang, Wanqing AU - Zhang W AD - School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China. Electronic address: zhangwqzzu@163.com. FAU - Duan, Dawei AU - Duan D AD - School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China. FAU - Liu, Shanqin AU - Liu S AD - School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China. FAU - Zhang, Yongsheng AU - Zhang Y AD - School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China. FAU - Leng, Leipeng AU - Leng L AD - School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China. FAU - Li, Xinli AU - Li X AD - School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China. FAU - Chen, Na AU - Chen N AD - School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China. FAU - Zhang, Yuping AU - Zhang Y AD - School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China. Electronic address: beijing2008zyp@163.com. LA - eng PT - Journal Article DEP - 20180725 PL - England TA - Biosens Bioelectron JT - Biosensors & bioelectronics JID - 9001289 RN - 0 (Metal-Organic Frameworks) RN - 0 (Polymers) RN - VTD58H1Z2X (Dopamine) SB - IM MH - Biosensing Techniques/instrumentation/*methods MH - Dopamine/*analysis/*blood MH - Electrochemical Techniques MH - Electrodes MH - Humans MH - Limit of Detection MH - Metal-Organic Frameworks/*chemistry MH - Molecular Imprinting MH - Polymers/chemistry MH - Reproducibility of Results OTO - NOTNLM OT - MIP sensor OT - PPy/ZIF-67-MIPs/Nafion hybrid OT - dopamine OT - electrochemical detection EDAT- 2018/08/04 06:00 MHDA- 2019/02/08 06:00 CRDT- 2018/08/04 06:00 PHST- 2018/06/08 00:00 [received] PHST- 2018/07/23 00:00 [revised] PHST- 2018/07/24 00:00 [accepted] PHST- 2018/08/04 06:00 [pubmed] PHST- 2019/02/08 06:00 [medline] PHST- 2018/08/04 06:00 [entrez] AID - S0956-5663(18)30549-9 [pii] AID - 10.1016/j.bios.2018.07.047 [doi] PST - ppublish SO - Biosens Bioelectron. 2018 Oct 30;118:129-136. doi: 10.1016/j.bios.2018.07.047. Epub 2018 Jul 25.