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311.
Kangying Liu Kuluni Perera Zhiyang Wang Jianguo Mei Bryan W. Boudouris 《Journal of polymer science. Part A, Polymer chemistry》2021,59(22):2771-2782
Radical-containing polymers are an evolving class of redox-active macromolecules that have received great interest; however, most reports regarding radical polymers have focused on materials with nonconjugated backbones because their application drivers did not require this conjugation. Conversely, there has been a recent rise in the development of radical polymers for next-generation applications where imparting conjugation to the backbone of the radical polymer could be of significant benefit. To this end, we designed and synthesized a series of 3,4-propylenedioxythiophene (ProDOT)-based polymers bearing nitroxide radical pendent groups via direct arylation polymerization. Specifically, we present four radical polymers with open-shell loadings ranging from 24% to 82% of the total number of repeat units per polymer chain. The impact of open-shell loading on the electrochemical behaviors of these polymers in different electrolytes was then established using cyclic voltammetry, spectroelectrochemical analyses, and electrochemical quartz-crystal microbalance with dissipation monitoring. We demonstrate that incorporating the open-shell moieties in the ProDOT-based polymers lowers the oxidation onset potential of the conjugated backbone and increases the solvent and ion uptake significantly. Thus, this effort provides a clear picture of the mass transfer and doping mechanism of the ProDOT-based radical polymers to aid in guiding their future design. 相似文献
312.
Dr. Adam T. Brockett Dr. Chunlin Deng Michael Shuster Suvenika Perera Delaney DiMaggio Dr. Ming Cheng Dr. Steven Murkli Prof. Dr. Volker Briken Prof. Dr. Matthew R. Roesch Prof. Dr. Lyle Isaacs 《Chemistry (Weinheim an der Bergstrasse, Germany)》2021,27(69):17476-17486
We report the synthesis of two new acyclic sulfated acyclic CB[n]-type receptors ( TriM0 and Me4TetM0 ) and investigations of their binding properties toward a panel of drugs of abuse ( 1 – 13 ) by a combination of 1H NMR spectroscopy and isothermal titration calorimetry. TetM0 is the most potent receptor with Ka≥106 M−1 toward methamphetamine, fentanyl, MDMA and mephedrone. TetM0 is not cytotoxic toward HepG2 and HEK 293 cells below 100 μM according to MTS metabolic and adenylate kinase release assays and is well tolerated in vivo when dosed at 46 mg kg−1. TetM0 does not inhibit the hERG ion channel and is not mutagenic based on the Ames fluctuation test. Finally, in vivo efficacy studies show that the hyperlocomotion of mice treated with methamphetamine can be greatly reduced by treatment with TetM0 up to 5 minutes later. TetM0 has potential as a broad spectrum in vivo sequestrant for drugs of abuse. 相似文献
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ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option. 相似文献