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Showing 1 to 12 of 103 entries
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New insights into the thermal behaviour of organic ionic plastic crystals: magnetic resonance imaging of polycrystalline morphology alterations induced by solid-solid phase transitions.

Physical chemistry chemical physics : PCCP

Romanenko K, Pringle JM, O'Dell LA, Forsyth M.
PMID: 26130025
Phys Chem Chem Phys. 2015 Jul 15;17(29):18991-9000. doi: 10.1039/c5cp03294f.

Organic ionic plastic crystals (OIPCs) show strong potential as solid-state electrolytes for lithium battery applications, demonstrating promising electrochemical performance and eliminating the need for a volatile and flammable liquid electrolyte. The ionic conductivity (σ) in these systems has recently...

New opportunities for quantitative and time efficient 3D MRI of liquid and solid electrochemical cell components: Sectoral Fast Spin Echo and SPRITE.

Journal of magnetic resonance (San Diego, Calif. : 1997)

Romanenko K, Forsyth M, O'Dell LA.
PMID: 25442778
J Magn Reson. 2014 Nov;248:96-104. doi: 10.1016/j.jmr.2014.09.017. Epub 2014 Oct 02.

The ability to image electrochemical processes in situ using nuclear magnetic resonance imaging (MRI) offers exciting possibilities for understanding and optimizing materials in batteries, fuel cells and supercapacitors. In these applications, however, the quality of the MRI measurement is...

5% lidocaine medicated plaster double effect in a case of orofacial localized neuropathic pain.

Journal of pain research

Casale R, Romanenko Y, Allegri M.
PMID: 25473307
J Pain Res. 2014 Nov 24;7:639-43. doi: 10.2147/JPR.S70317. eCollection 2014.

Localized neuropathic pain (LNP) is a type of neuropathic pain that is characterized by "consistent and limited area(s) of maximum pain associated with negative or positive sensory signs and/or spontaneous symptoms characteristic of neuropathic pain". This definition encompasses a...

Nonclassical Packing of Metal Dioximates. Superexchange through a Diamagnetic Metal Cation.

Inorganic chemistry

Ovcharenko VI, Fokin SV, Reznikov VA, Ikorskii VN, Romanenko GV, Sagdeev RZ.
PMID: 11670361
Inorg Chem. 1998 May 04;37(9):2104-2105. doi: 10.1021/ic971523j.

No abstract available.

Molecular Magnets Based on Nickel(II) Complexes with 3-Imidazoline Nitroxides and Alcohols.

Inorganic chemistry

Ikorskii VN, Ovcharenko VI, Shvedenkov YG, Romanenko GV, Fokin SV, Sagdeev RZ.
PMID: 11670573
Inorg Chem. 1998 Aug 24;37(17):4360-4367. doi: 10.1021/ic9801847.

Crystallization of heterospin bischelate NiL(2), where L is deprotonated nitroxide 4-(3',3',3'-trifluoromethyl-2'-oxopropylidene)-2,2,5,5-tetramethyl-3-imidazoline-1-oxyl, with alcohols allows a logical assembly of layered [NiL(2)(CH(3)OH)(2) (1) and NiL(2)(C(2)H(5)OH)(2) (2)] or frame compounds [NiL(2)(HO(CH(2))(4)OH) (3) and NiL(2)(HO(CH(2))(5)OH) (4)]. The structures of complexes 1, 2, and...

[Regional demographic policy: goals, principles, possible solutions].

Naselenie (Sofia, Bulgaria : 1983)

Romanenkova G.
PMID: 12287027
Naselenie. 1991;9(1):35-42.

No abstract available.

Solid state NMR characterization of individual compounds and solid solutions formed in Sc(2)O(3)--V(2)O(5)--Nb(2)O(5)--Ta(2)O(5) system.

Magnetic resonance in chemistry : MRC

Khabibulin D, Romanenko K, Zuev M, Lapina O.
PMID: 17924354
Magn Reson Chem. 2007 Nov;45(11):962-70. doi: 10.1002/mrc.2086.

In this study, (51)V, (45)Sc and (93)Nb MAS NMR combined with satellite transition spectroscopy analysis were used to characterize the complex solid mixtures: VNb(9(1-x))Ta(9x)O(25), ScNb((1-x))Ta(x)O(4) and ScNb(2(1-x))Ta(2x)VO(9) (x = 0, 0.3, 0.5, 0.7, 1.0). This led us to describe...

129Xe NMR study of Xe adsorption on multiwall carbon nanotubes.

Solid state nuclear magnetic resonance

Romanenko KV, Fonseca A, Dumonteil S, Nagy JB, d'Espinose de Lacaillerie JB, Lapina OB, Fraissard J.
PMID: 16102946
Solid State Nucl Magn Reson. 2005 Sep;28(2):135-41. doi: 10.1016/j.ssnmr.2005.07.004. Epub 2005 Aug 18.

129Xe NMR spectroscopy has been used to study the adsorption of Xe on multi-wall carbon nanotubes (MWCNT). The results obtained have shown the 129Xe NMR ability to probe the intercrystalline (aggregate) and the inner porosity of CNT. In particular,...

Modelling of analytical peaks: peaks modifications.

Analytica chimica acta

Romanenko SV, Stromberg AG.
PMID: 17386462
Anal Chim Acta. 2007 Jan 09;581(2):343-54. doi: 10.1016/j.aca.2006.08.028. Epub 2006 Aug 22.

The basic principles of symmetric peaks modifications are considered in this work. Four types of modifications--two symmetric and two asymmetric are considered in detail. Double sequent peak modification was taken as example. The dependences of peak shape parameters on...

Mono- and diaminocarbenes from chloroiminium and -amidinium salts: synthesis of metal-free bis(dimethylamino)carbene.

Journal of the American Chemical Society

Otto M, Conejero S, Canac Y, Romanenko VD, Rudzevitch V, Bertrand G.
PMID: 14746458
J Am Chem Soc. 2004 Feb 04;126(4):1016-7. doi: 10.1021/ja0393325.

Bis(trimethylsilyl)mercury cleanly reacts at low temperature with chloroamidinium and -iminium chlorides, generating persistent metal-free cyclic and acyclic diaminocarbenes, as well as transient aryl-, chloro-, and hydrogenoaminocarbenes; with the latter, the corresponding olefin dimers were isolated, whereas with the former,...

Relationship between the thermally induced reorientations of aromatic solvate molecules in Cu(hfac)2-nitroxide breathing crystals and the character of the magnetic anomaly.

Inorganic chemistry

Romanenko GV, Maryunina KY, Bogomyakov AS, Sagdeev RZ, Ovcharenko VI.
PMID: 21675733
Inorg Chem. 2011 Jul 18;50(14):6597-609. doi: 10.1021/ic200444e. Epub 2011 Jun 15.

A new group of "breathing" crystals has been synthesized. These are aromatic solvates of the copper(II) hexafluoroacetylacetonate complex with spin-labeled pyrazole Cu(hfac)(2)L·0.5Solv, where L is 2-(1-butyl-1H-pyrazol-4-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-3-oxide-1-oxyl and Solv is benzene, toluene, ethylbenzene, propylbenzene, butylbenzene, styrene, o-xylene, m-xylene, p-xylene, 1,4-bis(trifluoromethyl)benzene,...

Ligand effects on the ferro- to antiferromagnetic exchange ratio in bis(o-semiquinonato)copper(II).

Journal of the American Chemical Society

Ovcharenko VI, Gorelik EV, Fokin SV, Romanenko GV, Ikorskii VN, Krashilina AV, Cherkasov VK, Abakumov GA.
PMID: 17676737
J Am Chem Soc. 2007 Aug 29;129(34):10512-21. doi: 10.1021/ja072463b. Epub 2007 Aug 03.

Heterospin complexes [Cu(SQ)2Py].C7H8, Cu(SQ)2DABCO, and [Cu(SQ)2NIT-mPy].C6H6, where Cu(SQ)2 is bis(3,6-di-tert-butyl-o-benzosemiquinonato)copper(II), DABCO is 1,4-diazabicyclo(2,2,2)octane, and NIT-mPy is the nitronyl nitroxide 2-(pyridin-3-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-3-oxide-1-oxyl, have been synthesized. The molecules of these complexes have a specific combination of the intramolecular ferro- and antiferromagnetic exchange...

Showing 1 to 12 of 103 entries