Premium
Nanoparticulate Conjugated Microporous Polymer with Post‐Modified Benzils for Enhanced Pseudocapacitor Performance
Author(s) -
Park So Young,
Kang Chang Wan,
Lee Sang Moon,
Kim Hae Jin,
Ko YoonJoo,
Choi Jaewon,
Son Seung Uk
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202002311
Subject(s) - pseudocapacitor , diphenylacetylene , conjugated microporous polymer , sonogashira coupling , benzil , microporous material , moiety , chemistry , electrochemistry , overcharge , redox , polymer chemistry , materials science , inorganic chemistry , organic chemistry , electrode , supercapacitor , catalysis , palladium , power (physics) , physics , battery (electricity) , quantum mechanics
Conjugated microporous polymer (CMP)‐based energy‐storage materials were developed for pseudocapacitors. Nanoparticulate CMP (N‐CMP) with an average diameter of 41±4 nm was prepared through kinetic growth control in the Sonogashira coupling of 1,3,5‐triethynylbenzene with 1,4‐diiodobenzene. The N‐CMP is rich in a diphenylacetylene moiety in its chemical structure. Through the FeCl 3 ‐catalyzed oxidation of diphenylacetylene moieties, N‐CMP with benzil moieties (N‐CMP‐BZ) was prepared and showed enhanced electrochemical performance as an electrode material of pseudocapacitors, compared with CMP, CMP‐BZ, and N‐CMP. In model studies, the benzil was redox active and showed two‐electron reduction behavior. The excellent electrochemical performance of N‐CMP‐BZ is attributable to the enhanced utilization of functional sites by a nanosize effect and the additional redox contribution of benzil moieties.