Results 41 to 50 of about 140,323 (303)

Synthesis and Spectroscopic Characterization of High-Spin Mononuclear Iron(II) \u3cem\u3ep\u3c/em\u3e-Semiquinonate Complexes [PDF]

, 2014
Two mononuclear iron(II) p-semiquinonate (pSQ) complexes have been generated via one-electron reduction of precursor complexes containing a substituted 1,4-naphthoquinone ligand. Detailed spectroscopic and computational analysis confirmed the presence of
Baum, Amanda E., Fiedler, Adam T., Lindeman, Sergey V., Park, Heaweon   +3 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

Characterization and Trypanocidal Activity of a Novel Pyranaphthoquinone

Molecules, 2017
Chagas disease is an endemic parasitic infection that occurs in 21 Latin American countries. New therapies for this disease are urgently needed, as the only two drugs available (nifurtimox and benznidazol) have high toxicity and variable efficacy in the ...
Elen Diana Dantas, Fabia Julliana Jorge de Souza, William Nascimento Litaiff Nogueira, Cláudia Cândida Silva, Pedro Henrique Antunes de Azevedo, Cícero Flávio Soares Aragão, Patricia Danielle Oliveira de Almeida, Mariana Filomena do Carmo Cardoso, Fernando de Carvalho da Silva, Eduardo Pereira de Azevedo, Euzébio Guimarães Barbosa, Emerson Silva Lima, Vitor Francisco Ferreira, Ádley Antonini Neves de Lima   +13 more
doaj   +1 more source

Studies on 1,4-Quinone Derivatives Exhibiting Anti-Leukemic Activity along with Anti-Colorectal and Anti-Breast Cancer Effects

Molecules, 2022
Colorectal cancer (CRC), breast cancer, and chronic myeloid leukemia (CML) are life-threatening malignancies worldwide. Although potent therapeutic and screening strategies have been developed so far, these cancer types are still major public health ...
Halilibrahim Ciftci, Belgin Sever, Nusret Kaya, Nilüfer Bayrak, Mahmut Yıldız, Hatice Yıldırım, Hiroshi Tateishi, Masami Otsuka, Mikako Fujita, Amaç Fatih TuYuN   +9 more
doaj   +1 more source

Production, characterization and determination of the real catalytic properties of the putative "succinate dehydrogenase" from Wolinella succinogenes [PDF]

, 2009
Both the genomes of the epsilonproteobacteria Wolinella succinogenes and Campylobacter jejuni contain operons (sdhABE) that encode for so far uncharacterized enzyme complexes annotated as ‘non-classical’ succinate:quinone reductases (SQRs).
Ackrell, Altschul, Baar, Bamford, Berks, Biel, Blaut, Bronder, Carlone, Clark, Collins, Collins, Dietrich, Gomes, Groß, Hägerhäll, Hedderich, Hederstedt, Heim, Huang, Iverson, Iverson, Janausch, Kenney, Körtner, Krafft, Kröger, Kyhse-Andersen, Laemmli, Lancaster, Lancaster, Lancaster, Lancaster, Lancaster, Lancaster, Lancaster, Lehman, Lemma, Lemos, Lemos, Leys, Lorenzen, Madej, Madej, Maguire, Mewies, Mileni, Ohnishi, Palmer, Park, Parkhill, Pealing, Rais, Rich, Robinson, Robinson, Schäfer, Schmid, Simon, Simon, Singer, Sun, Taylor, Thummer, Tietze, Unden, Unden, Wang, Wardman, Wild, Woodall, Yankovskaya   +71 more
core   +1 more source

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

Advanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin, Anila Antony, Hongtao Cai, Antonia Debevc, Ceyda Topal, Anne Linhardt, Alla Synytska, Leonid Ionov   +7 more
wiley   +1 more source

The Old Yellow Enzyme OfrA Fosters Staphylococcus aureus Survival via Affecting Thiol-Dependent Redox Homeostasis

Frontiers in Microbiology, 2022
Old yellow enzymes (OYEs) are widely found in the bacterial, fungal, and plant kingdoms but absent in humans and have been used as biocatalysts for decades.
Eslam S. Ibrahim, Eslam S. Ibrahim, Knut Ohlsen   +2 more
doaj   +1 more source

Light-harvesting in bacteria exploits a critical interplay between transport and trapping dynamics [PDF]

, 2010
Light-harvesting bacteria Rhodospirillum Photometricum were recently found to adopt strikingly different architectures depending on illumination conditions.
Felipe Caycedo-Soler, Ferney J. Rodríguez, H. van Amerongen, Luis Quiroga, Neil F. Johnson   +4 more
core   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Semiquantitative Infrared Analysis of Diketones and Anhydrides in a Reaction Mixture [PDF]

, 1976
The ozonolysis of a hydroxymethylene ketone yields a mixture of diketone and anhydride. Treatment of hydroxymethylene camphor with ozone affords, in addition to the expected camphor quinone, a surprisingly large amount of camphoric anhydride (56%) via ...
Getty, R., Lay, J. O., Watson, F. H., Jr., Yang, Dominic T.C.   +3 more
core   +2 more sources