Listar Química molecular e de materiais (QUIMOLMAT) por título
Mostrando ítems 11-30 de 89
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Antiviral and Antiproliferative Potential of Marine Organisms from the Yucatan Peninsula, Mexico
(Frontiers, 2020-08-20)[Abstract] Viral infections are one of the main human health problems in recent decades and the cancer remains one of the most lethal diseases worldwide. The development of new antiviral drugs for the treatment of human ... -
Apparent colossal dielectric constants in nanoporous Metal Organic Frameworks
(American Chemical Society (ACS), 2012-05-30)[Abstract] In this work, we show that the hybrid material Co2(1,4-bdc)2(dabco)•[4DMF•1H2O], shows an apparent colossal dielectric constant at room temperature (r5000 at 300 K for =100 Hz). Nevertheless, such response ... -
Atypical Magnetic Behavior in the Incommensurate (CH3NH3)[Ni(HCOO)3] Hybrid Perovskite
(ACS, 2023-02-02)[Abstract] A plethora of temperature-induced phase transitions have been observed in (CH3NH3)[M(HCOO)3] compounds, where M is Co(II) or Ni(II). Among them, the nickel compound exhibits a combination of magnetic and nuclear ... -
Bioactivity and Metabolome Mining of Deep-Sea Sediment-Derived Microorganisms Reveal New Hybrid PKS-NRPS Macrolactone from Aspergillus versicolor PS108-62
(MDPI, 2023-01-28)[Abstract] Despite low temperatures, poor nutrient levels and high pressure, microorganisms thrive in deep-sea environments of polar regions. The adaptability to such extreme environments renders deep-sea microorganisms ... -
Biologically Active Peptides from Venoms: Applications in Antibiotic Resistance, Cancer, and Beyond [Review]
(MDPI, 2022-12-06)[Abstract] Peptides are potential therapeutic alternatives against global diseases, such as antimicrobial-resistant infections and cancer. Venoms are a rich source of bioactive peptides that have evolved over time to act ... -
Bistratamides M and N, Oxazole-Thiazole Containing Cyclic Hexapeptides Isolated from Lissoclinum bistratum Interaction of Zinc (II) with Bistratamide K
(Multidisciplinary Dixital Publishing Institute, 2017-07-01)[Abstract] Two novel oxazole-thiazole containing cyclic hexapeptides, bistratamides M (1) and N (2) have been isolated from the marine ascidian Lissoclinum bistratum (L. bistratum) collected in Raja Ampat (Papua Bar, ... -
CB[7]- and CB[8]-Based [2]-(Pseudo)rotaxanes with Triphenylphosphonium-Capped Threads: Serendipitous Discovery of a New High-Affinity Binding Motif
(American Chemical Society, 2022-05-06)[Abstract] The synthesis of new triphenylphosphonium-capped cucurbit[7]uril (CB[7])- and cucurbit[8]uril (CB[8])-based [2]rotaxanes was achieved by a simultaneous threading-capping strategy. While the use of CB[7] produced ... -
Charge ordering and dielectric properties in the near half-doped Pr0.79Na0.21MnO3 perovskite
(Elsevier, 2008-06)[Abstract] The Pr0.79Na0.21MnO3 perovskite has been prepared in polycrystalline form by a ceramic method. We have carried out its structural characterization by synchrotron X-ray powder diffraction (SXRPD) at room temperature ... -
Coexistence of magnetic and electrical order in the new perovskite-like (C3N2H5)[Mn(HCOO)3] formate
(The Royal Society of Chemistry, 2013-09)[Abstract] In this work we further the structural characterization of the recently discovered (C3N2H5)[Mn(HCOO)3] metal–organic framework with perovskite-like structure, and we present its magnetic and dielectric properties ... -
Conjugation of different immunogenic enterococcal vaccine target antigens leads to extended strain coverage
(Oxford University Press, 2019-07-09)[Abstract] Enterococci have emerged as important nosocomial pathogens due to their resistance to the most commonly used antibiotics. Alternative treatments or prevention options are aimed at polysaccharides and surface-related ... -
Connection of Isolated Stereoclusters by Combining 13C-RCSA, RDC, and J-Based Configurational Analyses and Structural Revision of a Tetraprenyltoluquinol Chromane Meroterpenoid from Sargassum muticum
(MDPI, 2022)[Abstract] The seaweed Sargassum muticum, collected on the southern coast of Galicia, yielded a tetraprenyltoluquinol chromane meroditerpene compound known as 1b, whose structure is revised. The relative configuration of ... -
Controlled Binding of Organic Guests by Stimuli-Responsive Macrocycles
(Royal Society of Chemistry, 2020-05-12)[Abstract] Synthetic supramolecular chemistry pursues not only the construction of new matter, but also control over its inherently dynamic behaviour. In this context, classic host–guest chemistry, based on the development ... -
Cucurbit[8]uril (CB[8])-Based Supramolecular Switches
(Wiley, 2018-07-06)[Abstract] The use of cucurbit[8]uril as a molecular host has emerged in the chemical literature as a reliable strategy for the creation of dynamic chemical systems, owing to its ability to form homo- and heteroternary ... -
Cytotoxic furanoditerpenes from the sponge Spongia tubulifera collected in the Mexican Caribbean
(MDPI, 2019-07-16)[Abstract] Two new spongian furanoditerpenes, 3β-hydroxyspongia-13(16),14-dien-2-one (1) and 19-dehydroxy-spongian diterpene 17 (2), along with five known terpenes, the spongian furanoditerpenes 9-nor-3-hydroxyspongia-3, ... -
Dermacozine N, the First Natural Linear Pentacyclic Oxazinophenazine with UV–Vis Absorption Maxima in the Near Infrared Region, along with Dermacozines O and P Isolated from the Mariana Trench Sediment Strain Dermacoccus abyssi MT 1.1ᵀ
(MDPI, 2021-06-03)[Abstract] Three dermacozines, dermacozines N–P (1–3), were isolated from the piezotolerant Actinomycete strain Dermacoccus abyssi MT 1.1ᵀ, which was isolated from a Mariana Trench sediment in 2006. Herein, we report the ... -
Development of Antibacterial Steel Surfaces Through Laser Texturing
(AIP Publishing, 2020-09-22)[Abstract] The aim of the present study was to develop novel antibacterial touch surfaces through the laser texturing optimization of stainless steel. A wide range of laser fluence (2.11 J/cm2–5.64 J/cm2) and scanning ... -
Dicyanamide-Perovskites at the Edge of Dense Hybrid Organic–Inorganic Materials
(Elsevier, 2021-12-24)[Abstract] Hybrid organic–inorganic ABX3 perovskites with dicyanamide-ligands (dca: [N(CN)2]−) on the X-site are emerging as a distinct group of materials courtesy of their multifunctional properties. Here we present an ... -
Diimidazolium Halobismuthates [Dim]2[Bi2X10] (X = Cl–, Br–, or I–): A New Class of Thermochromic and Photoluminescent Materials
(American Chemical Society (ACS), 2018-06-12)[Abstract] We present a novel family of polyhalide salts of Bi(III) with the general formula [Dim]2[Bi2X10], where Dim2+ is the diimidazolium cation (C9H14N4)2+ and X is Cl–, Br–, or I–. Single-phase materials are easily ... -
Discovery of Colossal Breathing-Caloric Effect under Low Applied Pressure in the Hybrid Organic–Inorganic MIL-53(Al) Material
(American Chemical Society, 2022-03-30)[Abstract] In this work, “breathing-caloric” effect is introduced as a new term to define very large thermal changes that arise from the combination of structural changes and gas adsorption processes occurring during ... -
Dolabelladienols A–C, New Diterpenes Isolated from Brazilian Brown Alga Dictyota pfaffii
(Multidisciplinary Digital Publishing Institute, 2014)[Abstract:]The marine brown alga Dictyota pfaffii from Atol das Rocas, in Northeast Brazil is a rich source of dolabellane diterpene, which has the potential to be used in future antiviral drugs by inhibiting reverse ...