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Showing 1 to 12 of 203 entries
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Two-level spatial modulation of vibronic conductance in conjugated oligophenylenes on boron nitride.

Nano letters

Palma CA, Joshi S, Hoh T, Ecija D, Barth JV, Auwärter W.
PMID: 25756645
Nano Lett. 2015 Apr 08;15(4):2242-8. doi: 10.1021/nl503956p. Epub 2015 Mar 10.

Intramolecular current-induced vibronic excitations are reported in highly ordered monolayers of quaterphenylene dicarbonitriles at an electronically patterned boron nitride on copper platform (BN/Cu(111)). A first level of spatially modulated conductance at the nanometer-scale is induced by the substrate. Moreover,...

Synthesis of Pyrene-Fused Pyrazaacenes on Metal Surfaces: Toward One-Dimensional Conjugated Nanostructures.

ACS nano

Jiang L, Papageorgiou AC, Oh SC, Sağlam Ö, Reichert J, Duncan DA, Zhang YQ, Klappenberger F, Guo Y, Allegretti F, More S, Bhosale R, Mateo-Alonso A, Barth JV.
PMID: 26651905
ACS Nano. 2016 Jan 26;10(1):1033-41. doi: 10.1021/acsnano.5b06340. Epub 2015 Dec 14.

We investigated the synthesis of one-dimensional nanostructures via Schiff base (imine) formation on three close-packed coinage metal (Au, Ag, and Cu) surfaces under ultrahigh vacuum conditions. We demonstrate the feasibility of forming pyrene-fused pyrazaacene-based oligomers on the Ag(111) surface...

Iron phthalocyanine on Cu(111): Coverage-dependent assembly and symmetry breaking, temperature-induced homocoupling, and modification of the adsorbate-surface interaction by annealing.

The Journal of chemical physics

Snezhkova O, Bischoff F, He Y, Wiengarten A, Chaudhary S, Johansson N, Schulte K, Knudsen J, Barth JV, Seufert K, Auwärter W, Schnadt J.
PMID: 26957171
J Chem Phys. 2016 Mar 07;144(9):094702. doi: 10.1063/1.4942121.

We have examined the geometric and electronic structures of iron phthalocyanine assemblies on a Cu(111) surface at different sub- to mono-layer coverages and the changes induced by thermal annealing at temperatures between 250 and 320 °C by scanning tunneling...

Preservation of electronic properties of double-decker complexes on metallic supports.

Physical chemistry chemical physics : PCCP

Cirera B, Matarrubia J, Kaposi T, Giménez-Agulló N, Paszkiewicz M, Klappenberger F, Otero R, Gallego JM, Ballester P, Barth JV, Miranda R, Galán-Mascarós JR, Auwärter W, Ecija D.
PMID: 28277577
Phys Chem Chem Phys. 2017 Mar 22;19(12):8282-8287. doi: 10.1039/c6cp08239d.

Single-molecule magnets based on lanthanide double-deckers are attracting significant attention due to their unrivaled single-ion anisotropy. To exploit their fascinating electronic and magnetic properties in devices for information storage or spin transport, studies on the preservation or variation of...

Source, variability, and transformation of nitrate in a regional karst aquifer: Edwards aquifer, central Texas.

The Science of the total environment

Musgrove M, Opsahl SP, Mahler BJ, Herrington C, Sample TL, Banta JR.
PMID: 27314899
Sci Total Environ. 2016 Oct 15;568:457-469. doi: 10.1016/j.scitotenv.2016.05.201. Epub 2016 Jun 14.

Many karst regions are undergoing rapid population growth and expansion of urban land accompanied by increases in wastewater generation and changing patterns of nitrate (NO3(-)) loading to surface and groundwater. We investigate variability and sources of NO3(-) in a...

Spatial patterns of epilepsy-related emergency department visits in california.

Journal of public health research

Banta JE, Addison A, Beeson WL.
PMID: 25918697
J Public Health Res. 2015 Apr 17;4(1):441. doi: 10.4081/jphr.2015.441. eCollection 2015 Feb 20.

BACKGROUND: Socio-demographic factors are associated with increased emergency department (ED) use among patients with epilepsy. However, there has been limited spatial analysis of such visits.DESIGN AND METHODS: California ED visit at the patient ZIP Code level were examined using...

Immobilisation of a molecular epoxidation catalyst on UiO-66 and -67: the effect of pore size on catalyst activity and recycling.

Dalton transactions (Cambridge, England : 2003)

Kaposi M, Cokoja M, Hutterer CH, Hauser SA, Kaposi T, Klappenberger F, Pöthig A, Barth JV, Herrmann WA, Kühn FE.
PMID: 26283061
Dalton Trans. 2015 Sep 28;44(36):15976-83. doi: 10.1039/c5dt01340b.

Amino-functionalised metal-organic frameworks UiO-66 and -67 were post-synthetically modified with salicylaldehyde. A molybdenum complex was immobilised on the resulting materials. They were characterised by (13)C-MAS-NMR, XPS and PXRD to confirm immobilisation and stability. The immobilised complex is an active...

Control of molecular organization and energy level alignment by an electronically nanopatterned boron nitride template.

ACS nano

Joshi S, Bischoff F, Koitz R, Ecija D, Seufert K, Seitsonen AP, Hutter J, Diller K, Urgel JI, Sachdev H, Barth JV, Auwärter W.
PMID: 24328081
ACS Nano. 2014 Jan 28;8(1):430-42. doi: 10.1021/nn406024m. Epub 2013 Dec 11.

Suitable templates to steer the formation of nanostructure arrays on surfaces are indispensable in nanoscience. Recently, atomically thin sp(2)-bonded layers such as graphene or boron nitride (BN) grown on metal supports have attracted considerable interest due to their potential...

Quality of life. 1. Perspectives.

Pharmacy world & science : PWS

Banta HD.
PMID: 8490584
Pharm World Sci. 1993 Apr 23;15(2):45-9. doi: 10.1007/BF01874082.

Assessing the value of health care interventions is more and more a concern of governments, clinicians, health insurance companies, policy makers, and the general public. One dimension of the outcomes of such interventions that has received relatively little attention...

Worldwide interest in global access to drugs.

JAMA

Banta HD.
PMID: 11401589
JAMA. 2001 Jun 13;285(22):2844-6.

No abstract available.

Stereochemical effects in supramolecular self-assembly at surfaces: 1-D versus 2-D enantiomorphic ordering for PVBA and PEBA on Ag(111).

Journal of the American Chemical Society

Barth JV, Weckesser J, Trimarchi G, Vladimirova M, De Vita A, Cai C, Brune H, Günter P, Kern K.
PMID: 12095343
J Am Chem Soc. 2002 Jul 10;124(27):7991-8000. doi: 10.1021/ja0256764.

We present investigations on noncovalent bonding and supramolecular self-assembly of two related molecular building blocks at a noble metal surface: 4-[trans-2-(pyrid-4-yl-vinyl)]benzoic acid (PVBA) and 4-[(pyrid-4-yl-ethynyl)]benzoic acid (PEBA). These rigid, rodlike molecules comprising the same complementary moieties for hydrogen bond...

Direct observation of chiral metal-organic complexes assembled on a Cu100 surface.

Journal of the American Chemical Society

Messina P, Dmitriev A, Lin N, Spillmann H, Abel M, Barth JV, Kern K.
PMID: 12440891
J Am Chem Soc. 2002 Nov 27;124(47):14000-1. doi: 10.1021/ja028553s.

We report single-molecule level STM observations of chiral complexes generated by the assembly of achiral components at a metal surface. Following co-deposition of iron atoms and 1,3,5-tricarboxylic benzoic acid (trimesic acid, TMA) on Cu(100) in ultrahigh vaccum, TMA molecules...

Showing 1 to 12 of 203 entries