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Metal Complex - Europe PMC

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Last Updated: 23 April 2022

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Cooperative catalysis by a single-atom enzyme-metal complex.

Anchoring single metal atoms on enzymes has the ability to produce hybrid catalysts with high energy and selectivity for reactions that are unintended by traditional metal catalysts. Under ambient conditions, a factor of 300 between lipase-active site and single Pd atom increases alkyl cross-coupling reaction between 1-bromohexane and B-n-BBN with high effectiveness, surpassing that of the common catalyst Pd 2 by a factor of 300.

Source link: https://europepmc.org/article/MED/35449166


Multimode Electron Tomography sheds light on synthesis, structure, and properties of complex metal-based nanoparticles.

Electron tomography has emerged as a staple tool for the analysis of nanoparticle morphology in three dimensions. The most notable examples of these combined signals include annular dark-field scanning transmission electron microscopy with different collection angles, and the combination of ADF-STEM with energy dispersive X-ray or electron energy loss spectroscopies. This review summarizes the experimental and computational progress of several multimode tomography techniques in connection with fundamental materials science problems that multimode tomography has been instrumental in conquering.

Source link: https://europepmc.org/article/MED/35438805


Chlorination of L-tyrosine and metal complex: degradation kinetics and disinfection by-products generation.

The presence of metal ions in drinking water purification and distribution systems could interfere with the sterilization process of organic matter, which had aroused people's skepticism. The complexation of L-tyrosine with common metal ions was investigated in this paper, as well as the effect of complexation in chlorination using various experimental factors. The reaction rate constants of complex increased by 5. 6% in comparison to L-tyrosine, but trihalomethane production decreased by 21. 5 percent and the production of haloacetic acids rose by 29% at the state of metal complexation. The effect of metal complexation on chlorination was more apparent than that of metal coexistence. Mn 2+ > Fe 3+ > Ca 2+ For various metal complexation, the order of limitation on trihalomethane production was Ca 2+ > Mn 2+ > Mn 2+ > Mn 2+ > Ca 2+.

Source link: https://europepmc.org/article/MED/35392772


KB 3 H 8 ·NH 3 B 3 H 7 Complex as a Potential Solid-State Electrolyte with Excellent Stability against K Metal.

Herein, we discuss the synthesis of new KB 3 H 8 n NH 3 B 3 H 7 complexes to produce suitable solid-state conductors for batteries. For a change from a monoclinic to an orthorhombic phase, the highest value of K borohydrides reported to date and places KB 3 H 8 among the top solid-state K-ion conductors. KB 3 H 8 B 3 H 7 a promising electrolyte for all-solid-state potassium batteries, according to these results.

Source link: https://europepmc.org/article/MED/35385248


Multifunctional metal complex-based gene delivery for tumour immune checkpoint blockade combination therapy.

Fe/PEI-Tn can condensate PD-L1 trap plasmid and mediate PD-L1 trap protein expression in tumour tissues in situ, effectively blocking the PD-1/PD-L1 pathway. In comparison, Fe/PEI-Tn therapy can cause tumor cell damage and release tumour-specific antigens into the tumour microenvironment, which can raise anti-tumour immune response in mice. HA/Fe/PEI-Tn/pPD-L1 trap complexes, according to reports, could promote tumor cell formation and premature tumour formation.

Source link: https://europepmc.org/article/MED/35311603


Highly bioactive iridium metal-complex alleviates spinal cord injury via ROS scavenging and inflammation reduction.

IrFPHtz directly targets SOD1 and upregulates the expression of SOD1 to reduce the excess Reactive Oxygen Species production that resultes from SCI, shielding neuron cells from further injury. IrFPHtz therefore shielded the neurons and myelin sheaths against injury, lessened glial scar mold formulations, and encouraged neurons repair and long-axon expansion in the glial scar. Consequently, this research provides information about a novel treatment for SCI using IrFPHtz as a potential drug and discusses the clinical importance of metal complexes in diseases characterized by elevated ROS species.

Source link: https://europepmc.org/article/MED/35405576


Metal organic frameworks as advanced adsorbent materials for separation and analysis of complex samples.

The pre-treatment of a sample is of utmost importance for research protein phosphorylation and glycosylation. The sample preparation methods based on metal-organic frameworks are based on efficient and precise enrichment of phosphoprotein and glycoprotein. In addition, the prospect of sample pre-treatment in proteomics is investigated.

Source link: https://europepmc.org/article/MED/35378322

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions