Results 11 to 20 of about 225 (136)

Nutation Spectroscopy of a Weakly Interacting Heterobimetallic Spin System. [PDF]

Chemistry
An heterobimetallic VIV−CuII complex is synthesized by a modular process involving external coordination sites of a porphyrinato ligand and a PdII linker. Pulsed Electron Paramagnetic Resonance experiments, in particular spin nutation spectroscopy at variable microwave powers or magnetic fields, reveals weak but non‐negligible magnetic interactions and
Appleton JL, Le Breton N, Choua S, Ruppert R, Boudalis AK.   +4 more
europepmc   +2 more sources

Conclusive Insight into the Coordination Complexes of a Flexible Bis(β-diketonato) Ligand and Their Phase-Dependent Structure: A Multi-Technique Approach. [PDF]

Chemistry
Complexes of flexible bis(β‐diketonato) ligand bdhb2− are dimeric in the crystalline state but rearrange to monomeric in organic solution. The transformation, first detected on paramagnetic VO2+ and Co2+ derivatives, is conclusively proved through the preparation of diamagnetic [Zn2(bdhb)2(py)2] and its investigation by high‐resolution 1H NMR ...
Imperato M, Nicolini A, Mironova O, Benassi E, Demitri N, Gigli L, Mucci A, Cornia A.   +7 more
europepmc   +2 more sources

A Heterometallic Porphyrin Dimer as a Potential Quantum Gate: Magneto‐Structural Correlations and Spin Coherence Properties

Angewandte Chemie, Volume 135, Issue 48, November 27, 2023., 2023
Electron paramagnetic resonance (EPR) shows that a vanadyl‐copper meso‐meso linked bisporphyrin complex has good spin coherence and a sizeable magnetic exchange interaction, making it suitable for operating two‐qubit molecular spin‐based quantum gates over a wide range of operation conditions.
Davide Ranieri, Alberto Privitera, Fabio Santanni, Karolina Urbanska, Grant J. Strachan, Brendan Twamley, Enrico Salvadori, Yu‐Kai Liao, Mario Chiesa, Mathias O. Senge, Federico Totti, Lorenzo Sorace, Roberta Sessoli   +12 more
wiley   +2 more sources

Large Faraday Rotation in Liquid Crystals With Embedded Paramagnetic Ions (Cu2+, VO2+) at Room Temperature

Advanced Optical Materials, Volume 14, Issue 28, 24 July 2026.
Large Faraday rotation at room temperature is observed in thin films of discotic copper (Cu2+: 3d9) and vanadyl (VO2+: 3d1) enaminoketone complexes. The large Verdet constant originates from a high density of paramagnetic centers, metal‐ligand p−d hybridization and π orbitals involved in optical transitions (identified by DFT calculations), as well as ...
Karolina Łempicka‐Mirek, Adam Krówczyński, Mateusz Król, Nevill Gonzalez Szwacki, Paulina Rybak, Damian Pociecha, Paweł W. Majewski, Barbara Piętka, Jacek Szczytko   +8 more
wiley   +1 more source

Selective Adsorption of Vanadyl Porphyrin on Solid Adsorbent in the Presence of Polycyclic Aromatic Hydrocarbon: Kinetics, Equilibrium, and Thermodynamic Studies

Chemistry
The presence of vanadium compounds in heavy oils poses a significant challenge by poisoning and deactivating refining catalysts, making their removal an essential processing step.
Xiu Chen, Chen Huang, Haidong Li, Suoqi Zhao, Linzhou Zhang   +4 more
doaj   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, Volume 36, Issue 15, 19 February 2026.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

A Triple‐Catalytic, Fully Biogenic Synthesis of Cyclic Carbonates

ChemSusChem, Volume 19, Issue 1, January 2026.
A three‐step synthesis of cyclic carbonates from biogenic resources (fatty acids, O2, CO2) is reported. The process operates via a visible light‐mediated hydrocarbon oxidation, with an overall 100% atom‐economy, in the presence of easily accessible catalysts (porphyrin, VO(acac)2, pyridine) but without intermediate work‐up procedures.
Robin Stuhr, Leon Liu, Axel Jacobi von Wangelin   +2 more
wiley   +1 more source

Reconstruction of the biogeochemistry and ecology of photoautotrophs based on the nitrogen and carbon isotopic compositions of vanadyl porphyrins from Miocene siliceous sediments [PDF]

Biogeosciences, 2008
We determined both the nitrogen and carbon isotopic compositions of various vanadyl alkylporphyrins isolated from siliceous marine sediments of the Onnagawa Formation (middle Miocene, northeastern Japan) to investigate the biogeochemistry and ecology of ...
Y. Kashiyama, N. O. Ogawa, M. Shiro, R. Tada, H. Kitazato, N. Ohkouchi   +5 more
doaj  

Organic field‐effect transistors: Materials design, device physics, and contact engineering for high‐performance flexible electronics

Information &Functional Materials, Volume 2, Issue 4, Page 267-305, December 2025.
This review bridges molecular design with device engineering to address key challenges in organic transistors. By integrating materials chemistry with contact optimization, it provides pathways toward stable, high‐performance flexible electronics. Abstract Organic field‐effect transistors are widely recognized as key enabling components for low‐cost ...
Fenglan Kuang, Fei Wang, Dawei Duan, Yicong Ma, Xiaokang Sun, Soumitra Satapathi, Annie Ng, Haoran Lin, Zheng Li, Yufei Zhong, Hanlin Hu   +10 more
wiley   +1 more source

Interfacial Photoelectrochemistry in Organic Synthesis

Angewandte Chemie International Edition, Volume 64, Issue 42, October 13, 2025.
Heterogeneous photoelectrodes are widespread for activations of H2O and CO2, while homogeneous photoelectrochemistry with molecular catalysts dominates complex molecule activations in synthesis. Nonetheless, interfacial photoelectrochemistry (iPEC) offers great potential for synthesis, including catalyst cost‐efficiency, reusability, and stability ...
Gabriel Chan, Daria Corsi, Oleksandr Savateev, Paolo Giusto, Joshua P. Barham   +4 more
wiley   +1 more source