Results 81 to 90 of about 344,103 (291)

Integrated Visible Light and Oxidant Protection Through Multifunctional Sunscreens

Advanced Healthcare Materials, EarlyView.
High‐energy visible radiation (HEVR), although less energetic than UV light, penetrates deeper into the skin and contributes to photoaging, pigmentation disorders, and oxidative stress. The development of new HEVR‐targeted filters, therefore, represents not only a scientific challenge but also a pressing public health and cosmetic industry need.
Beatriz Peñín, Raúl Losantos, Ignacio Funes‐Ardoiz, Diego Sampedro   +3 more
wiley   +1 more source

Hydrogen production by methanol steam reforming on NiSn/MgO-Al 2O3 catalysts: The role of MgO addition [PDF]

, 2011
The effect of the magnesia loading on the surface structure and catalytic properties of NiSn/MgO-Al2O3 catalysts for hydrogen production by methanol steam reforming has been investigated. The catalysts have been obtained by impregnation of γ-Al2O3 by the
Bobadilla Baladrón, Luis Francisco, Centeno Gallego, Miguel Ángel, Domínguez Leal, María Isabel, Ivanova, Svetlana, Odriozola Gordón, José Antonio, Penkova, Anna Dimitrova, Roger, Anne-Cécile, Romero Sarria, Francisca   +7 more
core   +1 more source

Stepwise On‐Surface Synthesis and Transformations of Two‐Dimensional Covalent Organic Frameworks by Controlled Thermal Stimuli

Advanced Materials, EarlyView.
The seminal transformation of a 2D‐COF (SURFCOF‐IMDEA1) into a 2D porous COF (SURFCOF‐IMDEA2) on Au(111) by a sequential C‐C coupling and ladderization triggered by thermal annealing steps at increasing temperatures is reported. Abstract The development of covalent organic frameworks (COFs) is currently a primary objective in materials science, taking ...
Ana Barragán, Elena Pérez‐Elvira, Diego J. Vicent, Marco Lozano, Diego Soler‐Polo, Koen Lauwaet, José M. Gallego, Rodolfo Miranda, José I. Urgel, Pavel Jelínek, Nazario Martín, David Écija   +11 more
wiley   +1 more source

Bacteria‐Responsive Nanostructured Drug Delivery Systems for Targeted Antimicrobial Therapy

Advanced Materials, EarlyView.
Bacteria‐responsive nanocarriers are designed to release antimicrobials only in the presence of infection‐specific cues. This selective activation ensures drug release precisely at the site of infection, avoiding premature or indiscriminate release, and enhancing efficacy.
Guillermo Landa, Gracia Mendoza, Silvia Irusta, Manuel Arruebo   +3 more
wiley   +1 more source

Crystal structure and Hirshfeld surface analysis of 3-(cyclopropylmethoxy)-4-(difluoromethoxy)-N-(pyridin-2-ylmethyl)benzamide

Acta Crystallographica Section E: Crystallographic Communications, 2019
The title compound, C18H18F2N2O3, crystallizes with two independent molecules (A and B) in the asymmetric unit. They differ essentially in the orientation of the pyridine ring with respect to the benzene ring; these two rings are inclined to each other ...
G. Artheswari, V. Maheshwaran, N. Gautham   +2 more
doaj   +1 more source

Impact of Controlling the Site Distribution of Al Atoms on Catalytic Properties in Ferrierite-Type Zeolites [PDF]

, 2011
Zeolites with the ferrierite (FER) topology are synthesized using a combination of tetramethylammonium (TMA) cations with differently sized cyclic amines (pyrrolidine (Pyr), hexamethyleneimine (HMI), and 1,4- diazabicyclo[2.2.2]octane (DAB)).
Bhan A., Boronat M., Burton A., Carpenter J. R., Cheung P., Cheung P., Corma A., Fan W., Frillette V. J., Gabova V., Gabova V., Gies H., Gil B., Gómez-Hortigüela L., Jiang J., Jongkind H., Lewis J. E., Manuel Moliner, Mark E. Davis, Martínez-Alvarez C., Moliner M., Pinar A. B., Shantz D. F., Sun J., Wagner P., Wichterlova B., Yuriy Román-Leshkov, Zones S. I.   +27 more
core   +3 more sources

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

Advanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti, Valerio Di Lisio, Lucia Cardo, Alessandro Camilli, Estela Moretón Alfonsín, Daniele Cangialosi, Amaia Iturrospe Ibarra, Arantxa Arbe, Maurizio Prato   +8 more
wiley   +1 more source

Crystal structure of a second polymorph of tetrakis(pyridin-2-yl)methane

Acta Crystallographica Section E, 2014
A second polymorph of the title compound, C21H16N4, is reported. The original polymorph was solved by our group [Matsumoto et al. (2003). Tetrahedron Lett. 44, 2861–2864] in the monoclinic space group C2/c and refined to R = 0.050.
Kouzou Matsumoto, Masaki Kannami, Akira Fuyuhiro, Masaji Oda   +3 more
doaj   +1 more source

A comparative study of the electrochemical properties of vitamin B-6 related compounds at physiological pH [PDF]

, 2011
A comparative study of vitamin B6 group and related compounds in buffered solutions using electrochemical techniques has been performed at neutral pH.
A. Pocker, A. Temizer, A.E. Braunstein, A.J. Bard, A.J. Román, A.K. Lunn, C.M. Harris, C.M. Metzler, D. Manousek, E.E. Snell, H. Lund, J. Gonzalez-Rodríguez, J. Llor, J. Llor, J. M. Sevilla, J.M. Rodríguez Mellado, J.M. RodrÍguez Mellado, J.M. RodrÍguez Mellado, J.M. RodrÍguez Mellado, L. Camacho, M. Blázquez, M. Blázquez, M. Heyrovský, M. Stanulovic, M.L. Ahrens, M.S. Ibrahim, N.P. Bazhulina, P. Zuman, P. Zuman, R. Izquierdo, R. Izquierdo, R. Schwartz, S.G. Mairanoskii, T. Pineda, T. Pineda, T. Pineda, V. Mirceski, W.F. Wolkers, Y.V. Morozov   +38 more
core   +1 more source

Self‐Cooling Molecular Spin Qudits

Advanced Materials, EarlyView.
A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios, David Aguilà, David Gracia, Diamatoula Maniaki, Leoní A. Barrios, Alessandro Chiesa, Jesús I. Martínez, Valentin Novikov, Olivier Roubeau, Stefano Carretta, Marco Evangelisti, Guillem Aromí, Fernando Luis   +12 more
wiley   +1 more source