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Showing 1 to 12 of 112 entries
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Composition-dependent nanoelectronics of amido-phenazines: non-volatile RRAM and WORM memory devices.

Scientific reports

Maiti DK, Debnath S, Nawaz SM, Dey B, Dinda E, Roy D, Ray S, Mallik A, Hussain SA.
PMID: 29042660
Sci Rep. 2017 Oct 17;7(1):13308. doi: 10.1038/s41598-017-13754-w.

A metal-free three component cyclization reaction with amidation is devised for direct synthesis of DFT-designed amido-phenazine derivative bearing noncovalent gluing interactions to fabricate organic nanomaterials. Composition-dependent organic nanoelectronics for nonvolatile memory devices are discovered using mixed phenazine-stearic acid (SA)...

Phenazine production enhances extracellular DNA release via hydrogen peroxide generation in Pseudomonas aeruginosa.

Communicative & integrative biology

Das T, Manefield M.
PMID: 23710274
Commun Integr Biol. 2013 May 01;6(3):e23570. doi: 10.4161/cib.23570.

In Pseudomonas aeruginosa eDNA is a crucial component essential for biofilm formation and stability. In this study we report that release of eDNA is influenced by the production of phenazine in P. aeruginosa. A ∆phzA-G mutant of P. aeruginosa...

Excited-State Conformational/Electronic Responses of Saddle-Shaped N,N'-Disubstituted-Dihydrodibenzo[a,c]phenazines: Wide-Tuning Emission from Red to Deep Blue and White Light Combination.

Journal of the American Chemical Society

Zhang Z, Wu YS, Tang KC, Chen CL, Ho JW, Su J, Tian H, Chou PT.
PMID: 26075574
J Am Chem Soc. 2015 Jul 08;137(26):8509-20. doi: 10.1021/jacs.5b03491. Epub 2015 Jun 29.

A tailored strategy is utilized to modify 5,10-dimethylphenazine (DMP) to donor-acceptor type N,N'-disubstituted-dihydrodibenzo[a,c]phenazines. The representative compounds DMAC (N,N'-dimethyl), DPAC (N,N'-diphenyl), and FlPAC (N-phenyl-N'-fluorenyl) reveal significant nonplanar distortions (i.e., a saddle shape) and remarkably large Stokes-shifted emission independent of the...

In situ synthesis of hexakis(alkoxy)diquinoxalino[2,3-a:2',3'-c]phenazines: mesogenic phase transition of the electron-deficient discotic compounds.

The Journal of organic chemistry

Ong CW, Liao SC, Chang TH, Hsu HF.
PMID: 15104460
J Org Chem. 2004 Apr 30;69(9):3181-5. doi: 10.1021/jo035840l.

2,3,8,9,14,15-Hexakis(alkoxy)diquinoxalino[2,3-a:2',3'-c]phenazines with alkyl side chains varying from 6 to 12 carbon atoms were readily synthesized by the condensation of hexaketocyclohexane with the respective 1,2-bisalkoxy-4,5-diaminobenzene. Polarization microscopy and DSC studies showed all these compounds to exhibit a very wide mesophase...

The reactivity, as electrogenerated bases, of chiral and achiral phenazine radical-anions, including application in asymmetric deprotonation.

Organic & biomolecular chemistry

Alonso AM, Horcajada R, Motevalli M, Utley JH, Wyatt PB.
PMID: 16032362
Org Biomol Chem. 2005 Aug 07;3(15):2842-7. doi: 10.1039/b506309d. Epub 2005 Jul 01.

Radical-anions, electrochemically generated in aprotic solvent from C(2) symmetric homochiral phenazine derivatives, act as chiral electrogenerated bases (EGBs) in the desymmetrisation by selective deprotonation of a prochiral epoxide (3,4-epoxy-2,3,4,5-tetrahydrothiophene-1,1-dioxide); the anion produced is trapped by mesitoic anhydride. The phenazines...

A nitrite sensor based on a highly sensitive nitrite reductase mediator-coupled amperometric detection.

Analytical chemistry

Strehlitz B, Gründig B, Schumacher W, Kroneck PM, Vorlop KD, Kotte H.
PMID: 21619176
Anal Chem. 1996 Mar 01;68(5):807-16. doi: 10.1021/ac950692n.

Highly sensitive nitrite sensors have been developed for the first time based on mediator-modified electrodes. Tetraheme cytochrome c nitrite reductase from Sulfurospirillum deleyianum and cytochrome cd(1) nitrite reductase from Paracoccus denitrificans are able to accept electrons from artificial electron...

Influence of phenothiazines, phenazines and phenoxazine on cation transport in Candida albicans.

Journal of applied microbiology

Calahorra M, Sánchez NS, Peña A.
PMID: 30153370
J Appl Microbiol. 2018 Aug 28; doi: 10.1111/jam.14092. Epub 2018 Aug 28.

AIMS: (i) To analyse the increase in calcium ion uptake caused by several cationic dyes on Candida albicans, (ii) to postulate a mechanism, (iii) to define the effects of Zn ions on the phenomenon, and (iv) to propose the...

o-Quinones Derived from Tribenzotriquinacenes: Functionalization of Inner Bay Positions and Use for Single-Wing Extensions.

The Journal of organic chemistry

Zhang YF, Tian WF, Cao XP, Kuck D, Chow HF.
PMID: 26937585
J Org Chem. 2016 Mar 18;81(6):2308-19. doi: 10.1021/acs.joc.5b02806. Epub 2016 Mar 03.

Through a surprisingly nonregioselective oxidation process, the reaction of two analogous 2-hydroxy-substituted tribenzotriquinacenes (TBTQs) 8a/8b by o-iodoxybenzoic acid was found to afford the corresponding Cs- and C1-symmetrical TBTQ-o-quinones 6a/6b and 7a/7b, respectively, in 1:1 ratio and excellent combined yields....

A Rapid Synthesis of Some 1,4-aryldiazines by the Use of Lithium Chloride as an Effective Catalyst.

Acta chimica Slovenica

Karami B, Rooydel R, Saeed K.
PMID: 24061189
Acta Chim Slov. 2012 Mar;59(1):183-8.

The synthesis of some 1,4-aryldiazines (novel and known dibenzo[a,c]phenazines and quinoxalines) based on the condensation of 1,2-aryldiamines with aromatic 1,2-dicarbonyl compounds in the presence of lithium chloride as a heterogeneous catalyst is presented as convenient and efficient strategy. This...

Rhodium-Catalyzed Reaction of Azobenzenes and Nitrosoarenes toward Phenazines.

Organic letters

Xiao Y, Wu X, Wang H, Sun S, Yu JT, Cheng J.
PMID: 30958684
Org Lett. 2019 Apr 19;21(8):2565-2568. doi: 10.1021/acs.orglett.9b00502. Epub 2019 Apr 08.

A rhodium-catalyzed annulative reaction between azobenzenes and nitrosoarenes has been developed, leading to a series of phenazines in moderate to good yields. This procedure proceeds with sequential chelation-assisted addition of aryl C-H to nitrosoarenes and ring closure by electrophilic...

Synthesis of novel ligands targeting phenazine biosynthesis proteins as a strategy for antibiotic intervention.

Monatshefte fur chemie

Guttenberger N, Schlatzer T, Leypold M, Tassoti S, Breinbauer R.
PMID: 29681660
Monatsh Chem. 2018;149(4):847-856. doi: 10.1007/s00706-017-2100-z. Epub 2017 Nov 30.

No abstract available.

An umpolung strategy for rapid access to thermally activated delayed fluorescence (TADF) materials based on phenazine.

Chemical communications (Cambridge, England)

Zhang H, Guo Q, Cheng H, Ran C, Wu D, Lan J.
PMID: 35018392
Chem Commun (Camb). 2022 Jan 12; doi: 10.1039/d1cc06705b. Epub 2022 Jan 12.

Herein, Ag(I)-promoted regioselective intramolecular radical nucleophilic addition/rearrangement of 2-aryl diazaboroles has been accomplished for the first time to construct phenazine structures. This protocol is an umpolung strategy based on the classical electrophilic mechanism, and therefore, a reversed regioselectivity was...

Showing 1 to 12 of 112 entries