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Showing 1 to 12 of 153 entries
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Molecular Reorganization Energy as a Key Determinant of J-Band Formation in J-Aggregates of Polymethine Dyes.

The journal of physical chemistry. A

Petrenko A, Stein M.
PMID: 26091059
J Phys Chem A. 2015 Jul 02;119(26):6773-80. doi: 10.1021/acs.jpca.5b01269. Epub 2015 Jun 19.

This work demonstrates the feasibility of the theory of extended multiphonon electron transitions for the description of optical spectra of polymethine dyes and J-aggregates using quantum chemistry. The formation of a strong absorption band in dye monomers and a...

Beyond the Dimer and Trimer: Tetraspiro[2.1.2(5).1.2(9).1.2(13).1(3)] hexadecane-1,3,5,7-tetraone--the Cyclic Tetramer of Carbonylcyclopropane.

Chemistry (Weinheim an der Bergstrasse, Germany)

Sedenkova KN, Averina EB, Grishin YK, Andriasov KS, Stepanova SA, Roznyatovsky VA, Kutateladze AG, Rybakov VB, Albov DV, Kuznetsova TS, Zefirov NS.
PMID: 26762227
Chemistry. 2016 Mar 14;22(12):3996-9. doi: 10.1002/chem.201600140. Epub 2016 Feb 03.

Tetraspiro[2.1.2(5).1.2(9).1.2(13).1(3)]hexadecane-1,3,5,7-tetraone 4, a unique tetraketone containing a cyclooctane core and four spiroannelated cyclopropane moieties, represents the previously unknown cyclotetramer of carbonylcyclopropane. For this purpose oxidation of the parent polyspirocyclic hydrocarbon was examined under various oxidative conditions, and the reactivity...

Relationships between Lead Halide Perovskite Thin-Film Fabrication, Morphology, and Performance in Solar Cells.

Journal of the American Chemical Society

Sharenko A, Toney MF.
PMID: 26588594
J Am Chem Soc. 2016 Jan 20;138(2):463-70. doi: 10.1021/jacs.5b10723. Epub 2015 Nov 20.

Solution-processed lead halide perovskite thin-film solar cells have achieved power conversion efficiencies comparable to those obtained with several commercial photovoltaic technologies in a remarkably short period of time. This rapid rise in device efficiency is largely the result of...

Intact Reflexive but Deficient Voluntary Social Orienting in Autism Spectrum Disorder.

Frontiers in neuroscience

Kirchgessner MA, Chuang AZ, Patel SS, Sereno AB.
PMID: 26648841
Front Neurosci. 2015 Dec 01;9:453. doi: 10.3389/fnins.2015.00453. eCollection 2015.

Impairment in social interactions is a primary characteristic of people diagnosed with autism spectrum disorder (ASD). Although these individuals tend to orient less to naturalistic social cues than do typically developing (TD) individuals, laboratory experiments testing social orienting in...

Free-radical Destruction of Sphingolipids Resulting in 2-hexadecenal Formation.

Lipid insights

Shadyro O, Lisovskaya A, Semenkova G, Edimecheva I, Amaegberi N.
PMID: 25861222
Lipid Insights. 2015 Mar 25;8:1-9. doi: 10.4137/LPI.S24081. eCollection 2015.

The action of hypochlorous acid (HOCl) and γ-radiation on aqueous lysosphingolipid dispersions was found to produce 2-hexadecenal (Hex). This process includes the stages of formation of nitrogen-centered radicals from the starting molecules and the subsequent fragmentation of these radicals...

Sleep changes following statin therapy: a systematic review and meta-analysis of randomized placebo-controlled polysomnographic trials.

Archives of medical science : AMS

Broncel M, Gorzelak-Pabiś P, Sahebkar A, Serejko K, Ursoniu S, Rysz J, Corina Serban M, Możdżan M, Banach M.
PMID: 26528331
Arch Med Sci. 2015 Oct 12;11(5):915-26. doi: 10.5114/aoms.2015.54841.

INTRODUCTION: Statin use might be associated with an increased risk of sleep disturbances including insomnia, but the evidence regarding sleep changes following statin therapy has not been conclusive. Therefore we assessed the impact of statin therapy on sleep changes...

Coarsening of antiferromagnetic domains in multilayers: the key role of magnetocrystalline anisotropy.

Physical review letters

Nagy DL, Bottyán L, Croonenborghs B, Deák L, Degroote B, Dekoster J, Lauter HJ, Lauter-Pasyuk V, Leupold O, Major M, Meersschaut J, Nikonov O, Petrenko A, Rüffer R, Spiering H, Szilágyi E.
PMID: 11955216
Phys Rev Lett. 2002 Apr 15;88(15):157202. doi: 10.1103/PhysRevLett.88.157202. Epub 2002 Mar 29.

The domain structure of an antiferromagnetic superlattice is studied. Synchrotron Mössbauer and polarized neutron reflectometric maps show micrometer-size primary domain formation as the external field decreases from saturation to remanence. A secondary domain state consisting mainly of at least...

Dispersion-cancelled and dispersion-sensitive quantum optical coherence tomography.

Optics express

Nasr M, Saleh B, Sergienko A, Teich M.
PMID: 19474956
Opt Express. 2004 Apr 05;12(7):1353-62. doi: 10.1364/opex.12.001353.

Quantum optical coherence tomography (QOCT) makes use of an entangled twin-photon light source to carry out axial optical sectioning. We have probed the longitudinal structure of a sample comprising multiple surfaces in a dispersion-cancelled manner while simultaneously measuring the...

A meta-analysis of osteosarcoma outcomes in the modern medical era.

Sarcoma

Allison DC, Carney SC, Ahlmann ER, Hendifar A, Chawla S, Fedenko A, Angeles C, Menendez LR.
PMID: 22550423
Sarcoma. 2012;2012:704872. doi: 10.1155/2012/704872. Epub 2012 Mar 18.

Four decades ago, specialized chemotherapy regimens turned osteosarcoma, once considered a uniformly fatal disease, into a disease in which a majority of patients survive. Though significant survival gains were made from the 1960s to the 1980s, further outcome improvements...

Nanostructured organosilicon luminophores and their application in highly efficient plastic scintillators.

Scientific reports

Ponomarenko SA, Surin NM, Borshchev OV, Luponosov YN, Akimov DY, Alexandrov IS, Burenkov AA, Kovalenko AG, Stekhanov VN, Kleymyuk EA, Gritsenko OT, Cherkaev GV, Kechek'yan AS, Serenko OA, Muzafarov AM, Bereiter C.
PMID: 25293808
Sci Rep. 2014 Oct 08;4:6549. doi: 10.1038/srep06549.

Organic luminophores are widely used in various optoelectronic devices, which serve for photonics, nuclear and particle physics, quantum electronics, medical diagnostics and many other fields of science and technology. Improving their spectral-luminescent characteristics for particular technical requirements of the...

Recovering stimulus locations using populations of eye-position modulated neurons in dorsal and ventral visual streams of non-human primates.

Frontiers in integrative neuroscience

Sereno AB, Sereno ME, Lehky SR.
PMID: 24734008
Front Integr Neurosci. 2014 Mar 28;8:28. doi: 10.3389/fnint.2014.00028. eCollection 2014.

We recorded visual responses while monkeys fixated the same target at different gaze angles, both dorsally (lateral intraparietal cortex, LIP) and ventrally (anterior inferotemporal cortex, AIT). While eye-position modulations occurred in both areas, they were both more frequent and...

SiGeSn Ternaries for Efficient Group IV Heterostructure Light Emitters.

Small (Weinheim an der Bergstrasse, Germany)

von den Driesch N, Stange D, Wirths S, Rainko D, Povstugar I, Savenko A, Breuer U, Geiger R, Sigg H, Ikonic Z, Hartmann JM, Grützmacher D, Mantl S, Buca D.
PMID: 28160408
Small. 2017 Apr;13(16). doi: 10.1002/smll.201603321. Epub 2017 Feb 03.

SiGeSn ternaries are grown on Ge-buffered Si wafers incorporating Si or Sn contents of up to 15 at%. The ternaries exhibit layer thicknesses up to 600 nm, while maintaining a high crystalline quality. Tuning of stoichiometry and strain, as...

Showing 1 to 12 of 153 entries