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Showing 13 to 24 of 79 entries
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Making endo-cyclizations favorable again: a conceptually new synthetic approach to benzotriazoles via azide group directed lithiation/cyclization of 2-azidoaryl bromides.

Organic & biomolecular chemistry

Ageshina AA, Chesnokov GA, Topchiy MA, Alabugin IV, Nechaev MS, Asachenko AF.
PMID: 30994147
Org Biomol Chem. 2019 May 08;17(18):4523-4534. doi: 10.1039/c9ob00615j.

Although benzotriazoles are important and ubiquitous, currently there is only one conceptual approach to their synthesis: bridging the two ortho-amino groups with an electrophilic nitrogen atom. Herein, we disclose a new practical alternative - the endo-cyclization of 2-azidoaryl lithiums...

Microporous Materials Based on Norbornadiene-Based Cross-Linked Polymers.

Polymers

Alentiev DA, Dzhaparidze DM, Gavrilova NN, Shantarovich VP, Kiseleva EV, Topchiy MA, Asachenko AF, Gribanov PS, Nechaev MS, Legkov SA, Bondarenko GN, Bermeshev MV.
PMID: 30961307
Polymers (Basel). 2018 Dec 13;10(12). doi: 10.3390/polym10121382.

New microporous homopolymers were readily prepared from norbornadiene-2,5, its dimer and trimer by addition (vinyl) polymerization of the corresponding monomers with 60⁻98% yields. As a catalyst Pd-

Phase transition in a heteropolymer chain at a selective interface.

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics

Grosberg A, Izrailev S, Nechaev S.
PMID: 9962193
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics. 1994 Sep;50(3):1912-1921. doi: 10.1103/physreve.50.1912.

No abstract available.

[S. A. Tomilin on the issue of placement of human personality and its health in social hygiene].

Problemy sotsial'noi gigieny, zdravookhraneniia i istorii meditsiny

Nechaev VS.
PMID: 34882346
Probl Sotsialnoi Gig Zdravookhranenniiai Istor Med. 2021 Nov;29(6):1629-1634. doi: 10.32687/0869-866X-2021-29-6-1629-1634.

The article discusses the placement of personality and its health in early Soviet social hygiene. It is demonstrated that central position was assigned to analysis of integrated arrays of health statistical data of total population and its large groups....

Chiral Surface Lattice Resonances.

Advanced materials (Deerfield Beach, Fla.)

Goerlitzer ESA, Mohammadi R, Nechayev S, Volk K, Rey M, Banzer P, Karg M, Vogel N.
PMID: 32319171
Adv Mater. 2020 Jun;32(22):e2001330. doi: 10.1002/adma.202001330. Epub 2020 Apr 21.

Collective excitation of periodic arrays of metallic nanoparticles by coupling localized surface plasmon resonances to grazing diffraction orders leads to surface lattice resonances with narrow line width. These resonances may find numerous applications in optical sensing and information processing....

DFT Investigation of the η.

The journal of physical chemistry. A

Gloriozov IP, Dem'yanov PI, Zhulyaev NS, Nechaev MS, Oprunenko YF, Gam F, Saillard JY, Kuznetsov AE.
PMID: 33356252
J Phys Chem A. 2021 Jan 14;125(1):366-375. doi: 10.1021/acs.jpca.0c08251. Epub 2020 Dec 24.

Metalcyclopentadienyl complexes (MCp)

Designing a Broadband Pump for High-Quality Micro-Lasers via Modified Net Radiation Method.

Scientific reports

Nechayev S, Reusswig PD, Baldo MA, Rotschild C.
PMID: 27924844
Sci Rep. 2016 Dec 07;6:38576. doi: 10.1038/srep38576.

High-quality micro-lasers are key ingredients in non-linear optics, communication, sensing and low-threshold solar-pumped lasers. However, such micro-lasers exhibit negligible absorption of free-space broadband pump light. Recently, this limitation was lifted by cascade energy transfer, in which the absorption and...

Limiting probability distribution for a random walk with topological constraints.

Chaos (Woodbury, N.Y.)

Koralov LB, Nechaev SK, Sinai YG.
PMID: 12779904
Chaos. 1991 Aug;1(2):131-133. doi: 10.1063/1.165821.

The joint limiting probability distribution is studied for the two-dimensional random walk with topological constraints, omega(2ns), on Z(2) lattice, where 2n is its total length and (0

Weak Measurement of Elliptical Dipole Moments by C-Point Splitting.

Physical review letters

Nechayev S, Neugebauer M, Vorndran M, Leuchs G, Banzer P.
PMID: 30608733
Phys Rev Lett. 2018 Dec 14;121(24):243903. doi: 10.1103/PhysRevLett.121.243903.

We investigate points of circular polarization in the far field of elliptically polarized dipoles and establish a relation between the angular position and helicity of these C points and the dipole moment. In the case of highly eccentric dipoles,...

Self-isolation or borders closing: What prevents the spread of the epidemic better?.

Physical review. E

Valba O, Avetisov V, Gorsky A, Nechaev S.
PMID: 32794949
Phys Rev E. 2020 Jul;102(1):010401. doi: 10.1103/PhysRevE.102.010401.

Pandemic propagation of COVID-19 motivated us to discuss the impact of the human network clustering on epidemic spreading. Today, there are two clustering mechanisms which prevent of uncontrolled disease propagation in a connected network: an "internal" clustering, which mimics...

Brownian flights over a circle.

Physical review. E

Vladimirov A, Shlosman S, Nechaev S.
PMID: 32794955
Phys Rev E. 2020 Jul;102(1):012124. doi: 10.1103/PhysRevE.102.012124.

The stationary radial distribution, P(ρ), of a random walk with the diffusion coefficient D, which winds at the tangential velocity V around an impenetrable disk of radius R for R≫D/V converges to the distribution involving the Airy function. Typical...

Emission of circularly polarized light by a linear dipole.

Science advances

Neugebauer M, Banzer P, Nechayev S.
PMID: 31259240
Sci Adv. 2019 Jun 28;5(6):eaav7588. doi: 10.1126/sciadv.aav7588. eCollection 2019 Jun.

Controlling the polarization state and the propagation direction of photons is a fundamental prerequisite for many nanophotonic devices and a precursor for future on-chip communication, where the emission properties of individual emitters are particularly relevant. Here, we report on...

Showing 13 to 24 of 79 entries