Results 51 to 60 of about 170,894 (344)

Nonbonding oxygen holes and spinless scenario of magnetic response in doped cuprates [PDF]

, 2004
Both theoretical considerations and experimental data point to a more complicated nature of the valence hole states in doped cuprates than it is predicted by Zhang-Rice model. Actually, we deal with a competition of conventional hybrid Cu 3d-O 2p $b_{1g}\
A. A. Gippius, A. J. Millis, A. K. McMahan, A. S. Moskvin, A. S. Moskvin, A. S. Moskvin, A. S. Moskvin, B. J. Suh, B. Lake, B. Shastry, F. C. Zhang, I. Kupcic, J. B. Goodenough, J. E. Sonier, J. Haase, J. Haase, J. Tanaka, J. Tanaka, J. Yu, L. H. Tjeng, M. V. Eremin, P. C. Hammel, P. Husser, P. W. Anderson, R. L. Martin, S. Fujiyama, T. Goto, T. Imai, T. J. Smith, T. Tsuda, Y. Itoh, Y. Sidis, Y. Yoshinari, Y. Yoshinari, Y.-Q. Song   +34 more
core   +3 more sources

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

Lactate Dehydrogenase-B Oxidation and Inhibition by Singlet Oxygen and Hypochlorous Acid

Oxygen
Alterations in cellular energy metabolism are a hallmark of cancer and lactate dehydrogenase (LDH) enzymes are overexpressed in many cancers regardless of sufficient oxygen and functional mitochondria. Further, L-lactate plays signaling roles in multiple
Lisa M. Landino, Emily E. Lessard
doaj   +1 more source

A One-Hole Cu\u3csub\u3e4\u3c/sub\u3eS Cluster with N\u3csub\u3e2\u3c/sub\u3eO Reductase Activity: A Structural and Functional Model for Cu\u3csub\u3eZ\u3c/sub\u3e [PDF]

, 2016
During bacterial denitrification, two-electron reduction of N2O occurs at a [Cu4(μ4-S)] catalytic site (CuZ*) embedded within the nitrous oxide reductase (N2OR) enzyme.
Antholine, William E., Graham, Michael J., Johnson, Brittany J., Lindeman, Sergey, Mankad, Neal P.   +4 more
core   +2 more sources

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Janus electrocatalytic flow-through membrane enables highly selective singlet oxygen production

Nature Communications, 2020
Electrocatalytic processes are promising for automated and scalable synthesis of singlet oxygen, but they are energy- and chemical-intensive. Here the authors present a Janus electrocatalytic membrane that selectively produces singlet oxygen with low ...
Yumeng Zhao, Meng Sun, Xiaoxiong Wang, Chi Wang, Dongwei Lu, Wen Ma, Sebastian A. Kube, Jun Ma, Menachem Elimelech   +8 more
doaj   +1 more source

Non-adiabatic Effects in the Dissociation of Oxygen Molecules at the Al(111) Surface

, 2007
The measured low initial sticking probability of oxygen molecules at the Al(111) surface that had puzzled the field for many years was recently explained in a non-adiabatic picture invoking spin-selection rules [J. Behler et al., Phys. Rev. Lett.
A. Hellman, E. Wigner, G. Herzberg, G. Herzberg, Jörg Behler, Karsten Reuter, M. Born, Matthias Scheffler, O. Gunnarsson, P. M. W. Gill, W. H. Press, W. J. Hehre   +11 more
core   +1 more source

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

Advanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He, Minxian Zhang, Jinqiang Zhang, Hongqi Sun, Shaobin Wang, Xiaoguang Duan   +5 more
wiley   +1 more source

Reduction of three-band model for copper oxides to single-band generalized t~-~J model

, 1993
A three-band model for copper oxides in the region of parameters where the second hole on the copper has energy close to the first hole on the oxygen is considered. The exact solution for one hole on a ferromagnetic background of the ordered copper spins
A. L. Chernyshev, A.F. Barabanov, C. Castellani, C. Castellani, C. X. Chen, E. Dagotto, E. Gagliano, F.C. Zhang, F.C. Zhang, F.C. Zhang, G.L. Bir, H.B. Pang, J. Fink, J.L. Shen, K.J. von Szczepanski, M. Luchini, M.S. Hybertsen, P. Entel, S.V. Lovtsov, S.V. Lovtsov, V. I. Belinicher, V.I. Belinicher, V.J. Emery, V.J. Emery, V.J. Emery, V.V. Flambaum, W.E. Pickett, Y. Barry   +27 more
core   +1 more source