Synthesis and electrochemical property of 4-pyrrolyl-2,2,6,6-tetramethylpiperidine-l-oxyl

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  • School of Petrochemical Engineering,Changzhou University,Changzhou 213164

Received date: 2020-02-18

  Revised date: 2021-02-18

  Online published: 2021-06-10

Abstract

4-Pyrrolyl-2,2,6,6-tetramethylpiperidine (PyTEMP) was firstly synthesized by Clauson Kaas reaction with 4-amino-2,2,6,6-tetramethylpiperidine as the initial reactant,and 4-pyrrolyl-2,2,6,6-tetramethylpiperidine-l-oxyl (PyTEMPO) was then obtained by an oxidation reaction using 3-chloroperoxybenzoic acid as the oxidizer.The chemical structure of PyTEMPO was confirmed by 1H NMR and FT-IR spectra.The cyclic voltammetry results showed that the equilibrium potential (E0) of PyTEMPO in aqueous solution was 0.75V (vs.SHE),and independent of pH.The kinetic studies indicated that PyTEMPO possessed a highest electron transfer rate constant (k0) in Na2SO4,which was about 3.58×10-4cm/s.In addition,PyTEMPO displayed the highest electrochemical stability in NaCl with the peak current retention rate of 93.0% after 100 CV cycles.

Cite this article

Zhou Wenbo, Xu Juan, Cao Jianyu . Synthesis and electrochemical property of 4-pyrrolyl-2,2,6,6-tetramethylpiperidine-l-oxyl[J]. New Chemical Materials, 2021 , 49(5) : 146 -149 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.05.033

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