Results 71 to 80 of about 162,281 (356)

Controlled Aggregation of Pyrene‐Based Supramolecular Nanostructures for Light‐Driven Switchable H2 or H2O2 Production

Advanced Functional Materials, EarlyView.
This work reports the self‐assembly of a pyrene derivative into two distinct nanostructures and their application in visible‐light photocatalysis. The two nanostructures exhibit completely different yet complementary photocatalytic activities, promoting either H2 or H2O2 evolution.
Marianna Barbieri, Matilde Doardo, Ilaria Fortunati, Anna Fortunato, Elisabetta Collini, Francesca Arcudi, Luka Ðorđević   +6 more
wiley   +1 more source

Ratiometric Singlet Oxygen Sensor Based on BODIPY-DPA Dyad

Molecules, 2022
Compounds sensitive to reactive oxygen species are widely used in the study of processes in living cells and in the development of therapeutic agents for photodynamic therapy.
Alexey A. Pakhomov, Anastasia S. Belova, Arevik G. Khchoyan, Yuriy N. Kononevich, Dmitriy S. Ionov, Margarita A. Maksimova, Anastasiya Yu. Frolova, Mikhail V. Alfimov, Vladimir I. Martynov, Aziz M. Muzafarov   +9 more
doaj   +1 more source

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

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

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

Photodissociation of singlet oxygen in the UV region [PDF]

Physical Chemistry Chemical Physics, 2014
Photodissociation of singlet oxygen, O2 a(1)Δg, by ultraviolet radiation in the region from 200 to 240 nm has been investigated using velocity map imaging of the atomic oxygen photofragments. Singlet oxygen molecules are generated in a pulsed discharge and studied by one-laser photodissociation and detection around 226 nm as well as two color ...
Farooq, Z., Chestakov, D.A., Yan, B., Groenenboom, G.C., Zande, W.J. van der, Parker, D.H.   +5 more
openaire   +5 more sources

Cu2O/Cu Chiral Catalysts for Highly Selective Solar‐Assisted CO2‐to‐CO Electroreduction

Advanced Functional Materials, EarlyView.
To address the poor target‐product selectivity of the eCO2RR, breakthrough approaches based on the chiral‐induced spin selectivity phenomenon enhance the Faradaic efficiency (FE) for target hydrocarbons, such as CO. To induce this spin polarization strategy in Cu2O/Cu catalysts, it is proposed using amine‐based intermediate organic molecules with ...
Hyungsoo Lee, Young Sun Park, Eunji Kwon, Chang‐Seop Jeong, Juwon Yun, Subin Moon, Soobin Lee, Jun Hwan Kim, Donghyun Kim, Wooyong Jeong, Jaehyun Son, Jihwon Park, Seungho Yu, Jooho Moon   +13 more
wiley   +1 more source

Synthesis, physicochemical and photophysical characterization of 4-(1-Pyrenyl)-Butyl-α-d-mannopyranoside [PDF]

, 2015
Indexación: Web of Science; Scopus; Scielo.Glycolipids are biomolecules composed of a lipid chain (lipophilic) and a monosaccharide or oligosaccharide as hydrophilic group.
Arriagada, F.S., De La Fuente, J.R., Gunther, G., Morales, J., Nonell, S., Pizarro, N., Sanchez, S.A., Sandoval, C.   +7 more
core   +3 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

Oxygen-catalysed sequential singlet fission

Nature Communications, 2019
Singlet fission is a promising carrier multiplication process, where a singlet exciton is split in two triplet states. Here the authors propose an oxygen-assisted two-step mechanism for singlet fission accounting for ~ 40% triplet quantum yield in dilute
Nikolaus Wollscheid, J. Luis Pérez Lustres, Oskar Kefer, Sebastian Hahn, Victor Brosius, Uwe H. F. Bunz, Marcus Motzkus, Tiago Buckup   +7 more
doaj   +1 more source