Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/physrevb.42.1037 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Large Manipulation of Ferrimagnetic Curie Temperature by A-Site Chemical Substitution in ACuFeReO (A = Na, Ca, and La) Half Metals.
Inorg Chem
January 2025
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
CaCuFeReO and LaCuFeReO quadruple perovskite oxides are well known for their high ferrimagnetic Curie temperatures and half-metallic electronic structures. By A-site chemical substitution with lower valence state Na, an isostructural compound NaCuFeReO with both A- and B-site ordered quadruple perovskite structures in -3 symmetry was prepared using high-pressure and high-temperature techniques. The X-ray absorption study demonstrates the valence states to be Cu, Fe, and Re.
View Article and Find Full Text PDFMechanistic Analysis of Peptide Affinity to Single-Walled Carbon Nanotubes and Volatile Organic Compounds Using Chemiresistors.
ACS Appl Mater Interfaces
January 2025
Air Force Research Laboratory, 711th Human Performance Wing, Wright-Patterson Air Force Base, Wright-Patterson AFB, Ohio 45433, United States.
Peptides, due to their diverse and controllable properties, are used as both liquid and gas phase recognition elements for both biological and chemical targets. While it is well understood how binding of a peptide to a biomolecule can be converted into a sensing event, there is not the same mechanistic level of understanding with regard to how peptides modulate the selectivity of semiconductor/conductor-based gas sensors. Notably, a rational, mechanistic study has not yet been performed to correlate peptide properties to the sensor response for volatile organic compounds (VOCs) as a function of chemical properties.
View Article and Find Full Text PDFChiral effects at the metal center in Fe(III) spin crossover coordination salts.
J Phys Condens Matter
January 2025
Department of Physics and Astronomy, Jorgensen Hall, University of Nebraska-Lincoln, Lincoln, NE 68588-0299, United States of America.
Evidence of chirality was observed at the Fe metal center in Fe(III) spin crossover coordination salts [Fe(qsal)][Ni(dmit)] and [Fe(qsal)](TCNQ)from x-ray absorption (XAS) spectroscopy at the Fe 2pcore threshold. Based on the circularly polarized XAS data, the x-ray natural circular dichroism for [Fe(qsal)][Ni(dmit)] and [Fe(qsal)](TCNQ)is far stronger than seen for [Fe(qsal)]Cl suggesting this natural circular dichroism signature is a ligand effect rather than a result of just a loss of octahedral symmetry on the Fe core. The larger the chiral effects in the Fe 2p core to bound XAS, the greater the perturbation of the Fe 2pto 2pspin-orbit splitting seen in the XAS spectra.
View Article and Find Full Text PDFTwo Isomeric Thienoacenes in Thin Films: Unveiling the Influence of Molecular Structure and Intermolecular Packing on Electronic Properties.
J Phys Chem C Nanomater Interfaces
December 2024
Institut für Physik & Center for the Science of Materials Berlin (CSMB), Humboldt-Universität zu Berlin, Berlin 12489, Germany.
Isomerism of molecular structures is often encountered in the field of organic semiconductors, but little is known about how it can impact electronic and charge transport properties in thin films. This study reveals the molecular orientation, electronic structure, and intermolecular interactions of two isomeric thienoacenes (DN4T and isoDN4T) in thin films, in relation to their charge transport properties. Utilizing scanning tunneling microscopy (STM), angle-resolved photoemission spectroscopy (ARUPS), and near-edge X-ray absorption fine structure measurements (NEXAFS), we systematically analyze the behavior of these isomers from submonolayer to multilayer coverage on highly ordered pyrolytic graphite (HOPG) as substrates.
View Article and Find Full Text PDFResonant Soft X-ray Scattering Reveals the Distribution of Dopants in Semicrystalline Conjugated Polymers.
J Phys Chem B
December 2024
Materials Department, University of California at Santa Barbara, Santa Barbara, California 93117, United States.
The distribution of counterions and dopants within electrically doped semicrystalline conjugated polymers, such as poly(3-hexylthiophene-2,5-diyl) (P3HT), plays a pivotal role in charge transport. The distribution of counterions in doped films of P3HT with controlled crystallinity was examined using polarized resonant soft X-ray scattering (P-RSoXS). The changes in scattering of doped P3HT films containing trifluoromethanesulfonimide (TFSI) and 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (FTCNQ) as counterions to the charge carriers revealed distinct differences in their nanostructure.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!