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Showing 1 to 12 of 17 entries
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Molecularly Defined Nanostructures Based on a Novel AAA-DDD Triple Hydrogen-Bonding Motif.

Angewandte Chemie (International ed. in English)

Papmeyer M, Vuilleumier CA, Pavan GM, Zhurov KO, Severin K.
PMID: 26695538
Angew Chem Int Ed Engl. 2016 Jan 26;55(5):1685-9. doi: 10.1002/anie.201510423. Epub 2015 Dec 22.

A facile and flexible method for the synthesis of a new AAA-DDD triple hydrogen-bonding motif is described. Polytopic supramolecular building blocks with precisely oriented AAA and DDD groups are thus accessible in few steps. These building blocks were used...

The Philae lander mission and science overview.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

Boehnhardt H, Bibring JP, Apathy I, Auster HU, Ercoli Finzi A, Goesmann F, Klingelhöfer G, Knapmeyer M, Kofman W, Krüger H, Mottola S, Schmidt W, Seidensticker K, Spohn T, Wright I.
PMID: 28554970
Philos Trans A Math Phys Eng Sci. 2017 Jul 13;375(2097). doi: 10.1098/rsta.2016.0248.

The Philae lander accomplished the first soft landing and the first scientific experiments of a human-made spacecraft on the surface of a comet. Planned, expected and unexpected activities and events happened during the descent, the touch-downs, the hopping across...

Age-dependent clinical and echocardiographic manifestations of aortic stenosis in an unselected, non-biased cohort.

Cardiovascular diagnosis and therapy

Wilke I, Borosch J, Pecha S, Papmeyer S, Behrens S, von Kodolitsch Y, Aydin A.
PMID: 31737532
Cardiovasc Diagn Ther. 2019 Oct;9:S238-S246. doi: 10.21037/cdt.2019.09.13.

BACKGROUND: Age, clinical presentation and echocardiographic parameters are important factors in the decision on an individualized therapeutic strategy for patients with aortic stenosis (AS). Less is known about this information in a non-selected non-biased cohort.METHODS: We performed a retrospective,...

Two monosodium salt hydrates of Colour Index Pigment Red 48.

Acta crystallographica. Section C, Structural chemistry

Tapmeyer L, Hill S, Bolte M, Hützler WM.
PMID: 32756033
Acta Crystallogr C Struct Chem. 2020 Aug 01;76:716-722. doi: 10.1107/S2053229620008530. Epub 2020 Jul 06.

We report herein the crystal structures of a monohydrate of Colour Index Pigment Red 48 (P.R.48) (systematic name: monosodium 2-{2-[3-carboxy-2-oxo-1,2-dihydronaphthalen-1-ylidene]hydrazin-1-yl}-4-chloro-5-methylbenzenesulfonate monohydrate), Na

Seismic detection of the martian core.

Science (New York, N.Y.)

Stähler SC, Khan A, Banerdt WB, Lognonné P, Giardini D, Ceylan S, Drilleau M, Duran AC, Garcia RF, Huang Q, Kim D, Lekic V, Samuel H, Schimmel M, Schmerr N, Sollberger D, Stutzmann É, Xu Z, Antonangeli D, Charalambous C, Davis PM, Irving JCE, Kawamura T, Knapmeyer M, Maguire R, Marusiak AG, Panning MP, Perrin C, Plesa AC, Rivoldini A, Schmelzbach C, Zenhäusern G, Beucler É, Clinton J, Dahmen N, van Driel M, Gudkova T, Horleston A, Pike WT, Plasman M, Smrekar SE.
PMID: 34437118
Science. 2021 Jul 23;373(6553):443-448. doi: 10.1126/science.abi7730.

Clues to a planet's geologic history are contained in its interior structure, particularly its core. We detected reflections of seismic waves from the core-mantle boundary of Mars using InSight seismic data and inverted these together with geodetic data to...

Crystal structure of sodium ethoxide (C.

Chemical communications (Cambridge, England)

Beske M, Tapmeyer L, Schmidt MU.
PMID: 32101200
Chem Commun (Camb). 2020 Mar 24;56(24):3520-3523. doi: 10.1039/c9cc08907a.

As early as 1837, Liebig synthesised solid C2H5ONa. Today, C2H5ONa is one of the standard bases in organic synthesis. Here, we report the identification of different solid phases and the crystal structures and phase transformations of C2H5ONa and C2H5ONa·2C2H5OH.

Gradual photochemical-induced conversion of liquid polydimethylsiloxane layers to carbon containing silica coatings by VUV irradiation at 172 nm.

Langmuir : the ACS journal of surfaces and colloids

Dölle C, Papmeyer M, Ott M, Vissing K.
PMID: 19408896
Langmuir. 2009 Jun 16;25(12):7129-34. doi: 10.1021/la900278t.

Thin liquid layers of polydimethylsiloxane (PDMS) were irradiated by VUV light under nitrogen atmosphere using a Xe(2)- excimer lamp. The irradiated layers were analyzed with infrared reflection absorption spectroscopy (IRRAS) and X-ray photoelectron spectroscopy (XPS), showing a gradual photochemical-induced...

COMETARY SCIENCE. The landing(s) of Philae and inferences about comet surface mechanical properties.

Science (New York, N.Y.)

Biele J, Ulamec S, Maibaum M, Roll R, Witte L, Jurado E, Muñoz P, Arnold W, Auster HU, Casas C, Faber C, Fantinati C, Finke F, Fischer HH, Geurts K, Güttler C, Heinisch P, Herique A, Hviid S, Kargl G, Knapmeyer M, Knollenberg J, Kofman W, Kömle N, Kührt E, Lommatsch V, Mottola S, Pardo de Santayana R, Remetean E, Scholten F, Seidensticker KJ, Sierks H, Spohn T.
PMID: 26228158
Science. 2015 Jul 31;349(6247):aaa9816. doi: 10.1126/science.aaa9816.

The Philae lander, part of the Rosetta mission to investigate comet 67P/Churyumov-Gerasimenko, was delivered to the cometary surface in November 2014. Here we report the precise circumstances of the multiple landings of Philae, including the bouncing trajectory and rebound...

Goldberg Active Template Synthesis of a [2]Rotaxane Ligand for Asymmetric Transition-Metal Catalysis.

Journal of the American Chemical Society

Hoekman S, Kitching MO, Leigh DA, Papmeyer M, Roke D.
PMID: 26061430
J Am Chem Soc. 2015 Jun 24;137(24):7656-9. doi: 10.1021/jacs.5b04726. Epub 2015 Jun 16.

We report on the active template synthesis of a [2]rotaxane through a Goldberg copper-catalyzed C-N bond forming reaction. A C2-symmetric cyclohexyldiamine macrocycle directs the assembly of the rotaxane, which can subsequently serve as a ligand for enantioselective nickel-catalyzed conjugate...

A heterometallic macrocycle as a redox-controlled molecular hinge.

Dalton transactions (Cambridge, England : 2003)

Schouwey C, Papmeyer M, Scopelliti R, Severin K.
PMID: 25521255
Dalton Trans. 2015 Feb 07;44(5):2252-8. doi: 10.1039/c4dt03331k.

The ability to modify the structure of nanoscopic assemblies in a controlled fashion is an important prerequisite for the creation of functional supramolecular systems. Here, we describe a heterometallic Pt2Cu2-macrocycle which behaves as a molecular hinge. A square-planar Pt(ii)...

First crystal structure of a Pigment Red 52 compound: DMSO solvate hydrate of the monosodium salt.

Acta crystallographica. Section E, Crystallographic communications

Tapmeyer L, Eisenbeil D, Bolte M, Schmidt MU.
PMID: 33936765
Acta Crystallogr E Crystallogr Commun. 2021 Mar 19;77:402-405. doi: 10.1107/S2056989021002577. eCollection 2021 Apr 01.

Pigment Red 52, Na

Thickness and structure of the martian crust from InSight seismic data.

Science (New York, N.Y.)

Knapmeyer-Endrun B, Panning MP, Bissig F, Joshi R, Khan A, Kim D, Lekić V, Tauzin B, Tharimena S, Plasman M, Compaire N, Garcia RF, Margerin L, Schimmel M, Stutzmann É, Schmerr N, Bozdağ E, Plesa AC, Wieczorek MA, Broquet A, Antonangeli D, McLennan SM, Samuel H, Michaut C, Pan L, Smrekar SE, Johnson CL, Brinkman N, Mittelholz A, Rivoldini A, Davis PM, Lognonné P, Pinot B, Scholz JR, Stähler S, Knapmeyer M, van Driel M, Giardini D, Banerdt WB.
PMID: 34437117
Science. 2021 Jul 23;373(6553):438-443. doi: 10.1126/science.abf8966.

A planet's crust bears witness to the history of planetary formation and evolution, but for Mars, no absolute measurement of crustal thickness has been available. Here, we determine the structure of the crust beneath the InSight landing site on...

Showing 1 to 12 of 17 entries