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Showing 13 to 24 of 222 entries
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Switching from Reactant to Substrate Engineering in the Selective Synthesis of Graphene Nanoribbons.

The journal of physical chemistry letters

Merino-Díez N, Lobo-Checa J, Nita P, Garcia-Lekue A, Basagni A, Vasseur G, Tiso F, Sedona F, Das PK, Fujii J, Vobornik I, Sambi M, Pascual JI, Ortega JE, de Oteyza DG.
PMID: 29688007
J Phys Chem Lett. 2018 May 17;9(10):2510-2517. doi: 10.1021/acs.jpclett.8b00796. Epub 2018 Apr 27.

The challenge of synthesizing graphene nanoribbons (GNRs) with atomic precision is currently being pursued along a one-way road, based on the synthesis of adequate molecular precursors that react in predefined ways through self-assembly processes. The synthetic options for GNR...

On-Surface Synthesis of a Five-Membered Carbon Ring from a Terminal Alkynyl Bromide: A [4 + 1] Annulation.

The journal of physical chemistry letters

Wang T, Pan Y, Zhang W, Lawrence J, Mohammed MSG, Huang J, Feng L, Berdonces-Layunta A, Han D, Xu Q, Wu X, Tait SL, de Oteyza DG, Zhu J.
PMID: 32633516
J Phys Chem Lett. 2020 Aug 06;11(15):5902-5907. doi: 10.1021/acs.jpclett.0c01483. Epub 2020 Jul 13.

We report an on-surface synthesis of five-membered carbon ring via a [4 + 1] annulation reaction, starting from a simple terminal alkynyl bromide, 4-(bromoethynyl)biphenyl, on Ag(110). The combination of scanning tunneling microscopy (STM), synchrotron radiation photoemission spectroscopy (SRPES), and...

Degradation of Soil Humic Extract by Wood- and Soil-Associated Fungi, Bacteria, and Commercial Enzymes.

Microbial ecology

Gramss G, Sorge S, Ziegenhagen D.
PMID: 9929402
Microb Ecol. 1999 Feb;37(2):140-151. doi: 10.1007/s002489900138.

> Abstract An alkaline humic extract (HE) of a black calcareous forest mull was exposed to 36 fungal and 9 eubacterial isolates in liquid standing culture. At 21 d in fungi, and 4 d in bacteria, the groups of...

Total photoabsorption cross sections for 1H, 2H, and 3He from 200 to 800 MeV.

Physical review. C, Nuclear physics

Ahrens J, Altieri S, Annand JR, Audit G, Beck R, Braghieri A, Crawford RA, d'Hose N, Dolbilkin B, Ghedira L, Isbert V, Kellie JD, Kerhoas S, MacCormick M, MacGregor IJ, Murphy LY, Pedroni P, Pinelli T, Tamas G, Wallace PA, Zabrodin A.
PMID: 9970910
Phys Rev C Nucl Phys. 1996 Jan;53(1):41-49. doi: 10.1103/physrevc.53.41.

No abstract available.

Surface adsorption and lubrication properties of plant and dairy proteins: A comparative study.

Food hydrocolloids

Zembyla M, Liamas E, Andablo-Reyes E, Gu K, Krop EM, Kew B, Sarkar A.
PMID: 33536697
Food Hydrocoll. 2021 Feb;111:106364. doi: 10.1016/j.foodhyd.2020.106364.

The aim of this work was to compare the surface adsorption and lubrication properties of plant and dairy proteins. Whey protein isolate (WPI) and pea protein isolate (PPI) were chosen as model animal and plant proteins, respectively, and various...

Reassessing Alkyne Coupling Reactions While Studying the Electronic Properties of Diverse Pyrene Linkages at Surfaces.

ACS nano

Lawrence J, Mohammed MSG, Rey D, Aguilar-Galindo F, Berdonces-Layunta A, Peña D, de Oteyza DG.
PMID: 33630588
ACS Nano. 2021 Mar 23;15(3):4937-4946. doi: 10.1021/acsnano.0c09756. Epub 2021 Feb 25.

The combination of alkyne and halogen functional groups in the same molecule allows for the possibility of many different reactions when utilized in on-surface synthesis. Here, we use a pyrene-based precursor with both functionalities to examine the preferential reaction...

Single Photon Emission from a Plasmonic Light Source Driven by a Local Field-Induced Coulomb Blockade.

ACS nano

Leon CC, Gunnarsson O, de Oteyza DG, Rosławska A, Merino P, Grewal A, Kuhnke K, Kern K.
PMID: 32159937
ACS Nano. 2020 Apr 28;14(4):4216-4223. doi: 10.1021/acsnano.9b09299. Epub 2020 Mar 18.

A hallmark of quantum control is the ability to manipulate quantum emission at the nanoscale. Through scanning tunneling microscopy-induced luminescence (STML), we are able to generate plasmonic light originating from inelastic tunneling processes that occur in the vacuum between...

Ectopic pregnancy in noncommunicating horn of unicornuate uterus: 3D-ultrasound and primary laparoscopic management.

Clinical case reports

Dhanawat J, Pape J, Stuhlmann-Laeisz C, Maass N, Freytag D, Gitas G, Alkatout I.
PMID: 34084520
Clin Case Rep. 2021 May 24;9(5):e04261. doi: 10.1002/ccr3.4261. eCollection 2021 May.

Unicornuate uterus with pregnancy in the noncommunicating rudimentary horn is extremely rare. Diagnosis requires awareness, high suspicion index, 3D ultrasound, and MRI. If missed, it can be catastrophic. Treatment varies across literature. We present a case where detection was...

The Development of Laparoscopy-A Historical Overview.

Frontiers in surgery

Alkatout I, Mechler U, Mettler L, Pape J, Maass N, Biebl M, Gitas G, Laganà AS, Freytag D.
PMID: 34977146
Front Surg. 2021 Dec 15;8:799442. doi: 10.3389/fsurg.2021.799442. eCollection 2021.

The advent of laparoscopy marked a fundamental change in the evolution of medicine. The procedure progressed consistently after the first time it was performed in a human being nearly a hundred years ago. The 1960's and 1980's witnessed groundbreaking...

Chemisorption-Induced Formation of Biphenylene Dimer on Ag(111).

Journal of the American Chemical Society

Zeng Z, Guo D, Wang T, Chen Q, Matěj A, Huang J, Han D, Xu Q, Zhao A, Jelínek P, de Oteyza DG, McEwen JS, Zhu J.
PMID: 34964646
J Am Chem Soc. 2021 Dec 29; doi: 10.1021/jacs.1c08284. Epub 2021 Dec 29.

We report an example that demonstrates the clear interdependence between surface-supported reactions and molecular-adsorption configurations. Two biphenyl-based molecules with two and four bromine substituents, i.e., 2,2'-dibromobiphenyl (DBBP) and 2,2',6,6'-tetrabromo-1,1'-biphenyl (TBBP), show completely different reaction pathways on a Ag(111) surface,...

In Silico Identification of Chikungunya Virus B- and T-Cell Epitopes with High Antigenic Potential for Vaccine Development.

Viruses

Sánchez-Burgos GG, Montalvo-Marin NM, Díaz-Rosado ER, Pérez-Rueda E.
PMID: 34960629
Viruses. 2021 Nov 24;13(12). doi: 10.3390/v13122360.

Reverse vaccinology is an outstanding strategy to identify antigens with high potential for vaccine development. Different parameters of five prediction programs were used to assess their sensitivity and specificity to identify B-cell epitopes of Chikungunya virus (CHIKV) strains reported...

Challenges in the synthesis of corannulene-based non-planar nanographenes on Au(111) surfaces.

Physical chemistry chemical physics : PCCP

Wang T, Lawrence J, Sumi N, Robles R, Castro-Esteban J, Rey D, Mohammed MSG, Berdonces-Layunta A, Lorente N, Pérez D, Peña D, Corso M, de Oteyza DG.
PMID: 33908516
Phys Chem Chem Phys. 2021 May 12;23(18):10845-10851. doi: 10.1039/d1cp01212f.

The on-surface synthesis of non-planar nanographenes is a challenging task. Herein, with the aid of bond-resolving scanning tunneling microscopy (BRSTM) and density functional theory (DFT) calculations, we present a systematic study aiming at the fabrication of corannulene-based nanographenes via...

Showing 13 to 24 of 222 entries