The voltammetry of surface bound 2-anthraquinonyl groups in room temperature ionic liquids: Cation size effects

Ernst, Sven; Aldous, Leigh; Compton, Richard G.

doi:10.1016/j.cplett.2011.06.073

Cited by 25 publications

(18 citation statements)

References 47 publications

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“…With the surface coverage for a closely-packed monolayer of anthraquinonyl groups determined to be 3. 45 10 À10 mol cm À2 [43], such low values would point to a film that is sub-monolayer in its content of AQ.…”

Section: à2mentioning

confidence: 98%

Electrochemical Behaviour of HOPG and CVD‐Grown Graphene Electrodes Modified with Thick Anthraquinone Films by Diazonium Reduction

et al. 2014

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Highly oriented pyrolytic graphite (HOPG) and graphene grown on Ni (Ni‐Gra) or Cu (Cu‐Gra) by chemical vapour deposition were modified with thick anthraquinone (AQ) films (7−60 nm) by redox grafting of the pertinent diazonium salt. Glassy carbon (GC) electrodes were used for comparison. The AQ‐modified GC electrodes showed excellent blocking properties towards the Fe(CN)63−/4− redox probe, although it was noted that in the case of Ni‐Gra and Cu‐Gra, the blocking ability depended strongly on the underlying substrate. Oxygen reduction studies revealed good electrocatalytic activity of AQ‐modified HOPG, Ni‐Gra, and Cu‐Gra, compared with the bare electrodes.

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Section: à2mentioning

confidence: 98%

Electrochemical Behaviour of HOPG and CVD‐Grown Graphene Electrodes Modified with Thick Anthraquinone Films by Diazonium Reduction

et al. 2014

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“…Then, a nucleophilic substitution with KSCOCH 3 led to molecule 4 bearing two sulfurs protected by acetyl groups. Compound 5 was obtained by the reduction of the nitro functional group using Na 2 S 2 O 4 and finally 5 was converted to the corresponding diazonium salt 1 by reaction with NOBF 4 . Functionalized nanotubes 6 were obtained by reaction of diazonium salt 1 onto MWNTs in N ‐methylpyrrolidone (NMP) on the presence of iron powder used as initiator for the reduction of the diazonium function.…”

Section: Resultsmentioning

confidence: 99%

“…Compound 1. 5 (500 mg, 1.9 mmol) was reacted with an equivalent of NOBF 4 (222 mg) in dichloromethane (100 mL) at 0 °C for 2 hours . The solvent was evaporated and the product was dried under vacuum to obtain 1 in quantitative yiekd as a dark brown powder.…”

Section: Methodsmentioning

confidence: 99%

Sulfur‐Containing Molecules Grafted on Carbon Nanotubes as Highly Cyclable Cathodes for Lithium/Organic Batteries

et al. 2018

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Lithium/organic and lithium/sulfur batteries have attracted great interest lately due to their high theoretical specific capacity and potential low cost. However, two major roadblocks currently prevent industrial development of these kind of batteries: (i) the progressive dissolution of active material in the electrolyte which hinders cyclability of the devices and; (ii) the electrical insulating nature of organic or sulfur materials. In this work, we show an elegant solution to solve both, the conductivity and dissolution issues. We covalently functionalized multi‐walled carbon nanotubes (MWNTs) with electrochemically active thiolated molecules. The MWNTs insure a well distributed electronic conductivity inside the positive electrode and serve as a support for a covalent immobilization of the thiolated active species. Compared to electrodes formed by simply mixing carbon nanotubes with thiol‐containing molecules, covalently functionalized MWNT materials present an excellent stability over prolonged cycling and a promising specific capacity, in the range of 100 mAh gelectrode−1, i. e., including carbon and current collector masses.

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“…42 found in the investigation of the ORR on AQ‐modified HOPG electrodes surface concentrations of 8×10 −11 mol cm −2 and 1.3×10 −10 mol cm −2 , respectively. With the surface coverage for a closely‐packed monolayer of anthraquinonyl groups determined to be 3.45×10 −10 mol cm −2 43, such low values would point to a film that is sub‐monolayer in its content of AQ.…”

Section: Introductionmentioning

confidence: 99%

Design Strategies for Enhanced Hydrogen‐Bond Donor Catalysts (Eur. J. Org. Chem. 13/2014)

2014

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The voltammetry of surface bound 2-anthraquinonyl groups in room temperature ionic liquids: Cation size effects

Cited by 25 publications

References 47 publications

Electrochemical Behaviour of HOPG and CVD‐Grown Graphene Electrodes Modified with Thick Anthraquinone Films by Diazonium Reduction

Electrochemical Behaviour of HOPG and CVD‐Grown Graphene Electrodes Modified with Thick Anthraquinone Films by Diazonium Reduction

Sulfur‐Containing Molecules Grafted on Carbon Nanotubes as Highly Cyclable Cathodes for Lithium/Organic Batteries

Design Strategies for Enhanced Hydrogen‐Bond Donor Catalysts (Eur. J. Org. Chem. 13/2014)

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