Results 21 to 30 of about 225 (136)

Optical absorption of supramolecular aggregates of vanadyl etioporphyrin-III in solutions and thin films

Supramolecular Materials
Relative abundance of vanadyl etio-porphyrin-III, VO-EtioP-III, a typical geoporphyrin, reaches its maximum in solid fossil fuels (coals). This determines the interest in studying supramolecular structure and solid-state properties of this compound ...
Andrey I. Koptyaev, Ekaterina D. Rychikhina, Yury A. Zhabanov, Vlad V. Travkin, Georgy L. Pakhomov   +4 more
doaj   +1 more source

Node Modification of Metal‐Organic Frameworks for Catalytic Applications

ChemistryOpen, Volume 14, Issue 7, July 2025.
Post‐synthetic modification of metal‐organic framework (MOF) nodes with metal or organic species produces advanced materials that serve as efficient catalysts, promoting more sustainable chemical transformations. Abstract Metal‐organic frameworks (MOFs) have been a breakthrough in different fields of chemistry, not only due to the extensive ...
Mario Martos, Isidro M. Pastor
wiley   +1 more source

Structural Engineering of Sonosensitive Nanohybrids by Active Vanadium Species toward Collapse of Multi‐Antioxidant Defenses and Boosted Therapy of Triple‐Negative Breast Cancer

Small Structures, Volume 6, Issue 6, June 2025.
A sonosensitive nanohybrid with defect structures is constructed through in situ etching deposition of vanadyl phosphate onto porphyrin metal–organic frameworks (MOFs), in which defects induce narrower bandgap and serve as charge traps for enhancing singlet oxygen generation under ultrasound irradiation. Additionally, released vanadium species overcome
Tingting Zhang, Jing Zhu, Yunyun Wu, Daqing Xia, Xiyue Xie, Lin Li, Zhenqiang Wang, Kaiyong Cai, Jixi Zhang   +8 more
wiley   +1 more source

Geochemical Variations in Sedimentary Records of Oxygen‐Depleted Marine Environments in Representative Geological Periods: New Perspectives From an Independent Component Analysis

Paleoceanography and Paleoclimatology, Volume 40, Issue 4, April 2025.
Abstract Throughout the Phanerozoic, the oceans repeatedly became oxygen depleted and deposited marine sediments called black shales. The mechanisms responsible for the compositional variability of black shales deposited at different times and places, however, are not yet fully understood.
M. Yano, K. Yasukawa, K. Nakamura, J. Kuroda, M. Ikehara, H. Iwamori, Y. Kato   +6 more
wiley   +1 more source

Broad-band spectroscopy of a vanadyl porphyrin: a model electronuclear spin qudit

Chemical Science, 2021
We show that a sizeable electronuclear entanglement of the S = 1/2 and I = 7/2 spins of a vanadyl porphyrin provides the conditions to act as a universal 4-qubit processor, and thus implement quantum error correction at the molecular level.
Gimeno, Ignacio, Urtizberea, Ainhoa, Román-Roche, Juan, Zueco, David, Camón, Agustín, Alonso, Pablo J., Roubeau, Olivier, Luis, Fernando   +7 more
openaire   +6 more sources

Magnetic Molecules as Building Blocks for Quantum Technologies

Advanced Quantum Technologies, Volume 8, Issue 2, February 2025.
Quantum effects have led to advanced technologies like quantum sensing and computing, requiring precise manipulation of quantum states. Magnetic molecules are promising candidates for such tasks due to their controllable properties, coherence preservation, and ability to function as qubits or qudits.
Eufemio Moreno‐Pineda, Wolfgang Wernsdorfer   +1 more
wiley   +1 more source

Advances in Exploring Mechanisms of Oxidative Phenolic Coupling Reactions

Advanced Synthesis &Catalysis, Volume 366, Issue 21, Page 4347-4384, November 5, 2024.
Abstract Biphenolic compounds serve as important scaffolds for the development of biologically active molecules. Among the methods for the synthesis of biarenols, oxidative coupling, which directly forms a C−C bond, has been extensively explored in various metal‐catalyzed (V, Cr, Co, Fe, Cu, etc.) reactions, electrochemical reactions, and photochemical
Haeun Choi, Sung‐Eun Suh, Houng Kang
wiley   +1 more source

Spin‐bearing molecules as optically addressable platforms for quantum technologies

Nanophotonics, Volume 13, Issue 24, Page 4357-4379, November 2024.
Abstract Efforts to harness quantum hardware relying on quantum mechanical principles have been steadily progressing. The search for novel material platforms that could spur the progress by providing new functionalities for solving the outstanding technological problems is however still active.
Senthil Kumar Kuppusamy, David Hunger, Mario Ruben, Philippe Goldner, Diana Serrano   +4 more
wiley   +1 more source

Conjugated Porphyrin Tapes as Quantum Mediators for Vanadyl Qubits

, 2022
Vanadium(IV) magnetic centers are prime candidates as molecular quantum information units. One of the longstanding problems is to obtain an extendable scaffold that transmits the magnetic interaction to a degree usable for quantum processing, and allows upscaling to multiple centers, while preserving a sufficiently long coherence time.
Iago Pozo, Federico Lombardi, Dimitris Alexandropoulos, Fanmiao Kong, Jie-Ren Deng, Peter Horton, Simon Coles, William Myers, Lapo Bogani, Harry Anderson   +9 more
openaire   +1 more source

Two‐ and Three‐Spin Hybrid Inorganic‐Organic [2]Rotaxanes Containing Metallated Salen Groups

Chemistry – An Asian Journal, Volume 19, Issue 20, October 16, 2024.
Heterometallic paramagnetic rotaxanes substituted with additional spins are reported. These additional spins are coordinated to salen ligands and the structure is confirmed in solution by pulsed EPR spectroscopy‐ Abstract Mono‐ and bis‐salen functionalised [2]rotaxanes have been synthesised from the esterification of [2]rotaxanes containing phenol ...
Tom S. Bennett, Selena J. Lockyer, Deepak Asthana, George F. S. Whitehead, Inigo J. Vitorica‐Yrezabal, Grigore A. Timco, Richard E. P. Winpenny, Eric J. L. McInnes   +7 more
wiley   +1 more source