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Mostrando ítems 191-200 de 256
Artículo
Understanding gold nanoparticles interactions with chitosan: Crosslinking agents as novel strategy for direct covalent immobilization of biomolecules on metallic surfaces
(Elsevier, 2020-03-15)
The development of a new method for covalent immobilization of biomolecules on the surface of bare gold nanoparticles (AuNPs) by using crosslinking agents in one step is presented. A very compatible biopolymer such ...
Artículo
Redox-Active Hybrid Polyoxometalate-Stabilised Gold Nanoparticles
(Wiley, 2020)
We report the design and preparation of multifunc-tional hybrid nanomaterials through the stabilization of goldnanoparticles with thiol-functionalised hybrid organic–inor-ganic polyoxometalates (POMs). The covalent attachment ...
Artículo
Copper-nitroxide based breathing crystals: a unified mechanism of gradual magnetostructural transition supported by quantum chemistry calculations
(Royal Society of Chemistry, 2019)
The molecular magnets Cu(hfac)2LR based on copper(II) and pyrazolyl-substituted nitronyl nitroxide radicals LR exhibit thermally and optically-induced magnetostructural transitions, similar to the spin-crossover and ...
Artículo
Charting the Lattice Thermal Conductivities of I-III-VI2Chalcopyrite Semiconductors
(American Chemical Society, 2022)
Chalcopyrite-structured semiconductors have promising potential as low-cost thermoelectric materials, but their thermoelectric figures of merit must be increased for practical applications. Understanding their thermal ...
Artículo
Inverse Oxide/Metal Catalysts in Fundamental Studies and Practical Applications: A Perspective of Recent Developments
(American Chemical Society, 2016)
Inverse oxide/metal catalysts have shown to be excellent systems for studying the role of the oxide and oxide-metal interface in catalytic reactions. These systems can have special structural and catalytic properties due ...
Artículo
Low pressure CO2 hydrogenation to methanol over gold nanoparticles activated on a CeOx/TiO2 Interface
(American Chemical Society, 2015)
Capture and recycling of CO2 into valuable chemicals such as alcohols could help mitigate its emissions into the atmosphere. Due to its inert nature, the activation of CO2 is a critical step in improving the overall reaction ...
Artículo
Proposal of an extended t-J Hamiltonian for high-Tc cuprates from ab initio calculations on embedded clusters
(American Physical Society, 2001)
A series of accurate ab initio calculations on CupOq finite clusters, properly embedded in the Madelung potential of the infinite lattice, have been performed in order to determine the local effective interactions in ...
Artículo
Phytochemical Analysis and Anti-Inflammatory Potential of Acanthus mollis L. Rhizome Hexane Extract
(Multidisciplinary Digital Publishing Institute (MDPI), 2023)
The rhizomes of Acanthus mollis have traditionally been used for the treatment of several ailments involving inflammation. However, to the best of our knowledge, their chemical composition and pharmacological properties ...
Artículo
Optical absorption and nonradiative decay mechanism of E′ center in silica
(American Physical Society, 1998)
We report ab initio configuration interaction calculations on the optical transitions of the E′ center, a hole trapped at an oxygen vacancy, ( - O)3Si• +(O - )3, in silica. We found two competing excitation mechanisms: (1) ...
Artículo
DNA conformational changes induced by cationic gemini surfactants: the key to switching DNA compact structures into elongated forms
(Royal Society of Chemistry, 2015)
The DNA conformational changes induced by different members of the N,N0-bis(dimethyldodecyl)-a-ualkanediammonium dibromide series (m-s-m, m ¼ 12, s ¼ 3 and 6) and the analogous series of hexadecyl gemini surfactants (m ...