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A New Electrocatalytic System Based on Copper (II) Chloride and Magnetic Molecularly Imprinted Polymer Nanoparticles in 3D Printed Microfluidic Flow Cell for Enzymeless and Low-Potential Cholesterol Detection. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Chen L, Song M, Guan J, Shu Y, Jin D, Fan G, Xu Q, Hu XY. A highly-specific photoelectrochemical platform based on carbon nanodots and polymers functionalized organic-inorganic perovskite for cholesterol sensing. Talanta 2020; 225:122050. [PMID: 33592772 DOI: 10.1016/j.talanta.2020.122050] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/10/2020] [Accepted: 12/22/2020] [Indexed: 12/21/2022]
Abstract
Herein, we reported the introduction of carbon nanodots (CNDs) and polyvinylidene fluoride (PVDF) as additives into perovskite CH3NH3PbI3 through in situ synthesis to prepare PVDF-CH3NH3PbI3@CNDs composite, which demonstrated improved water tolerance and mechanical stability. The application of PVDF-CH3NH3PbI3@CNDs for photoelectrochemical sensing was then explored. A molecularly imprinted polymer (MIP) that could specifically recognize cholesterol (CHO) was anchored to PVDF-CH3NH3PbI3@CNDs via a simple thermal polymerization process, followed by elution with hexane. A label-free and sensitive photoelectrochemical method for CHO detection was achieved by using the MIPs@PVDF-CH3NH3PbI3@CNDs platform. The detection limit for CHO was 2.1 × 10-14 mol/L, lower than most of the existing CHO detection methods. In our perception, this platform can be extended to numerous other analytes. This research result may provide a new understanding to improve the performance and broaden the application range of organic-inorganic perovskites.
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Affiliation(s)
- Lu Chen
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Minxia Song
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Jie Guan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Yun Shu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Dangqin Jin
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China; College of Chemical Engineering, Yangzhou Polytechnic Institute, Yangzhou, 225127, China
| | - Gaochao Fan
- College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China
| | - Qin Xu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China; College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China.
| | - Xiao-Ya Hu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China.
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A novel method of molecular imprinting applied to the template cholesterol. Talanta 2020; 217:121075. [DOI: 10.1016/j.talanta.2020.121075] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 04/18/2020] [Accepted: 04/22/2020] [Indexed: 02/03/2023]
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Ultrasonic Nebulization-Dispersive Solid-Phase-Monolithic Microcolumn Extraction Coupled with HPLC–MS/MS for Analyzing Sex Steroids in Lotion Samples. Chromatographia 2019. [DOI: 10.1007/s10337-019-03797-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Mass Spectrometry in Advancement of Redox Precision Medicine. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1140:327-358. [PMID: 31347057 DOI: 10.1007/978-3-030-15950-4_19] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Redox (portmanteau of reduction-oxidation) reactions involve the transfer of electrons between chemical species in biological processes fundamental to life. It is of outmost importance that cells maintain a healthy redox state by balancing the action of oxidants and antioxidants; failure to do so leads to a multitude of diseases including cancer, diabetes, fibrosis, autoimmune diseases, and cardiovascular and neurodegenerative diseases. From the perspective of precision medicine, it is therefore beneficial to interrogate the redox phenotype of the individual-similar to the use of genomic sequencing-in order to design tailored strategies for disease prevention and treatment. This chapter provides an overview of redox metabolism and focuses on how mass spectrometry (MS) can be applied to advance our knowledge in redox biology and precision medicine.
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Silva CF, Borges KB, do Nascimento CS. Rational design of a molecularly imprinted polymer for dinotefuran: theoretical and experimental studies aimed at the development of an efficient adsorbent for microextraction by packed sorbent. Analyst 2018; 143:141-149. [PMID: 29120471 DOI: 10.1039/c7an01324h] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this work, we studied theoretically the formation process of a molecularly imprinted polymer (MIP) for dinotefuran (DNF), testing distinct functional monomers (FM) in various solvents through density functional theory calculations. The results revealed that the best conditions for MIP synthesis were established with methacrylic acid (MAA) as FM in a 1 : 4 stoichiometry and with chloroform as the solvent. This protocol showed the most favourable stabilization energies for the pre-polymerization complexes. Furthermore, the formation of the FM/template complex is enthalpy driven and the occurrence of hydrogen bonds between the DNF and MAA plays a major role in the complex stability. To confirm the theoretical results, MIP was experimentally synthesized considering the best conditions found at the molecular level and characterized by scanning electron microscopy and thermogravimetric analysis. After that, the synthesized material was efficiently employed in microextraction by packed sorbent combined with high-performance liquid chromatography in a preliminary study of the recovery of DNF from water and artificial saliva samples.
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Affiliation(s)
- Camilla Fonseca Silva
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, Campus Dom Bosco, Praça Dom Helvécio 74, Fábricas, 36301-160, São João del-Rei, Minas Gerais, Brazil.
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