Formation of 2,3-diaminophenazines and their self-assembly into nanobelts in aqueous medium

He, Daiping; Wu, Yu; Xu, Bin

doi:10.1016/j.eurpolymj.2007.06.038

Cited by 41 publications

(34 citation statements)

References 18 publications

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“…These oligomers act as templates for the adsorption of N-phenylphenazines during the induction process. Meanwhile these N-phenylphenazines are used as starting template for forming PANI nanotubes by stacking around the oligomeric nanocrystallite [38,39]. After annealing, the as-made NTHC-1150 remains hollow tubular nanostructure.…”

Section: Resultsmentioning

confidence: 99%

Nanotube-like hard carbon as high-performance anode material for sodium ion hybrid capacitors

et al. 2017

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Sodium ion hybrid capacitors (SIHCs) are of great concern in large-scale energy storage applications due to their good energy-and-power characteristic, as well as abundant reserves and low cost of sodium. However, the sluggish faradaic kinetics of anode materials severely limit the overall electrochemical performance of SIHC devices. Herein, we report an application of nanotube-like hard carbon (NTHC) anode material prepared by high-temperature carbonization (1150°C) of polyaniline (PANI) nanotubes for high-performance SIHCs. As a result, the assembled sodium ion half-cell with NTHC shows a high reversible capacity of 419.5 mA h g . Within the potential range of 1.5-3.5 V, the SIHCs display an outstanding cycling stability tested at 2 A g −1 with a good capacity retention of 82.5% even after 12,000 cycles.

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Section: Resultsmentioning

confidence: 99%

Nanotube-like hard carbon as high-performance anode material for sodium ion hybrid capacitors

et al. 2017

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“…While this oxidation occurs much slower than results found using simple FeCl 3 salt-in that case 80% catalyst loading was required (0.48 mmol FeCl 3 to 0.60 mmol of ortho-phenylenediamine). 19 Here, only a 1% catalyst loading with Th(NO 3 ) 4 or UO 2 (NO 3 ) 2 is required. It is evident that the addition of actinide ions (Th 4+ and UO 2…”

Section: Resultsmentioning

confidence: 99%

“…21,22 Non-biological synthetic pathways are known, including catalysis by Fe(III), Co(II), and Cu(II) metal salts. 19,[23][24][25] We noted that the unencumbered 5f orbitals of actinide salts may offer another non-biological pathway to catalyze this synthesis. Here, we describe the thorium nitrate, uranyl nitrate, and oxygen mediated synthesis of 2,3-diaminophenazine from ortho-phenylenediamine (OPD) (see Scheme 1).…”

Section: Introductionmentioning

confidence: 97%

“…The heterocycle 2,3-diaminophenazine (DAP), is of interest in the self-assembly of nanobelts, 19 and it is typically prepared via H 2 O 2 catalysis with horseradish peroxidase and fungal laccase enzymes. 20 Li took advantage of the electroactivity of DAP when using the rapid oxidation of OPD to DAP via cupric ion-catalysis to synthesize electroactive nanoparticles that were to dope a graphene nanolabel.…”

Section: Introductionmentioning

confidence: 99%

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Actinide (Th4+ and UO22+) assisted oxidative coupling of ortho-phenylenediamine in the presence of oxygen

Maynard

Tutson

Lynn

et al. 2016

Tetrahedron Letters

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a b s t r a c tWhile the actinide salts because of their Lewis acidity and flexible coordination geometry demonstrate unique possibilities as catalysts, research with actinide catalysts typically involves complexed organoactinide frameworks. Many actinide salts have yet to be explored in catalysis or as reagents in metal mediated synthesis. Here, the synthesis of the heterocycle 2,3-diaminophenazine has been reported in good yields in the presence of oxygen via the first use of thorium nitrate or uranyl nitrate as the catalyst.

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“…[23][24][25] Recently, Sun and co-workers found that the internal pyridinium salt of the catalyst could play a built-in phase-transfer role for the acceleration of the epoxidation in an aqueous / organic biphasic medium as 2 mol% of external pyridinium salts and ammonium halides, with a tertiary amine unit that was used. 26,27 In this work, the synthesis of a new phenazinium salphen and its cationic complex with Mn(III) is reported. The cationic complex Mn(III)-salphen was applied in the epoxidation of olefins to epoxides.…”

Section: Introductionmentioning

confidence: 99%

A partially water-soluble cationic Mn(III)–salphen complex for catalytic epoxidation

AbdolmalekiAmir

Malek-AhmadiSaeed

2011

Can. J. Chem.

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Synthesis and application of new cationic Mn(III)-salphen complexes for catalytic epoxidation of olefins to epoxides in a homogeneous reaction media have been reported. The experimental data showed that the cationic salphen is more active than its neutral form. The acceleration of the reaction rate is attributed to the phase-transfer capability of the built-in phenazinium salt of the Mn(III)-salphen catalyst.Résumé : On a effectué la synthèse et examiné le domaine d'application d'un nouveau complexe cationique, le Mn(III)-salphène, pour la transformation catalytique d'oléfines en époxydes, dans un milieu réactionnel homogène. Les données expérimentales montent que le salphène cationique est plus actif que sa forme neutre. L'augmentation de la vitesse de réaction est attribuée à la capacité de transfert de charge du sel de phénazinium inclus dans le catalyseur Mn(III)-salphène.

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Formation of 2,3-diaminophenazines and their self-assembly into nanobelts in aqueous medium

Cited by 41 publications

References 18 publications

Nanotube-like hard carbon as high-performance anode material for sodium ion hybrid capacitors

Nanotube-like hard carbon as high-performance anode material for sodium ion hybrid capacitors

Actinide (Th4+ and UO22+) assisted oxidative coupling of ortho-phenylenediamine in the presence of oxygen

A partially water-soluble cationic Mn(III)–salphen complex for catalytic epoxidation

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