Discover Top Posts Tagged with #ligands

A new way to 'cage' plutonium

Plutonium (Pu) exhibits one of the most diverse and complex chemistries of any element in the periodic table. Since its discovery in 1940, scientists have synthesized and studied many different types of plutonium-containing compounds using tools that reveal both their atomic structures and how they interact with light. Not only does plutonium have numerous alloys and metallic phases, but it can also exist in coordination compounds—molecules in which a central metal atom is surrounded by and bound to other molecules or ions, known as ligands. In these compounds, plutonium appears as plutonium cations, meaning positively charged plutonium ions that form chemical bonds with their surroundings. While hundreds of such plutonium coordination structures are known today, only a tiny fraction of these compounds involve polyoxometalates (POMs), a special class of large, metal–oxygen molecular clusters that can act as rigid, inorganic "molecular cages" for metal ions.

Unconventional Discovery

Greater understanding of how cell molecules interact – the conjunction of ligands and their receptors – to bring about activation of their function. This study in fruit flies reveals an unconventional mechanism for TNF receptor binding its ligands

Read the published research paper here

Image from work by Annalisa Letizia and colleagues

Department of Cells and Tissues. Institut de Biologia Molecular de Barcelona, IBMB-CSIC. Parc Científic de Barcelona, Baldiri Reixac, Barcelona, Spain

Image originally published with a Creative Commons Attribution 4.0 International (CC BY 4.0)

Published in Nature Communications, September 2023

You can also follow BPoD on Instagram, Twitter and Facebook

#science #biomedicine #immunofluorescence #biology #tnf receptor #tnf #ligands #receptors

28 Jan 2017 // 7:35 pm

Today was the Southeastern Undergraduate Research Conference! Pictured is my amazing poster on Mercury (II) Halide complexes, which I might have done over a year ago... Overall, the conference went pretty well and I was told multiple times that I did really well on presenting my information! Super confident now on going to these research conference so I can’t wait for the next one in May.

#SURC #USC #Chemistry #inorganic chemistry #Personal #Mine #Research #Ligands #imidazolinium thione

Scientists build arsenic-lined crystal pore framework to boost rhodium catalyst performance

Rhodium is one of the most powerful catalytic metals known to chemistry. Small amounts of it can drive reactions that produce millions of tons of useful chemicals every year. But getting rhodium to work well—quickly, selectively, and without degrading—depends heavily on the ligands surrounding it. In a paper published in the Journal of the American Chemical Society, my colleagues and I show that swapping the usual phosphorus-based ligands for arsenic-based ones, and locking them inside a crystalline porous material, gives rhodium catalysts a significant performance boost.

Iron outperforms rare metals in stunning chemistry advance

A blue light activated iron catalyst just replaced rare metals and achieved a major first in drug synthesis.

Photocatalysts are materials that absorb light and use that energy to drive chemical reactions. In organic synthesis, metal based photocatalysts are especially valuable because they are durable and can be customized. By adjusting the ligands attached to the central metal atom, chemists can fine tune how the catalyst behaves. Many widely used photocatalyst metals, including ruthenium and iridium, are scarce and expensive. Researchers at Nagoya University in Japan previously introduced an iron based substitute, but that earlier version depended on large quantities of costly chiral ligands. These ligands act as spatial guides, determining the three dimensional arrangement of the final chemical products.

Over a decade in the making: Lanthanide nanocrystals illuminate new possibilities

In a discovery shaped by more than a decade of steady, incremental effort rather than a dramatic breakthrough, scientists from the National University of Singapore (NUS) and their collaborators demonstrated that great ideas flourish when paired with patience. Flashback to 2011: a small group of young researchers gathered around an aging optical bench at the NUS Department of Chemistry, watching a faint, flickering glow on a screen. Their goal seemed deceptively simple: make an insulating crystal emit light when electricity flowed through it. The challenge, however, was nearly impossible. Lanthanide nanocrystals, known for their chemical stability and pinpoint color purity, were insulators, notoriously resistant to electrical excitation.

From brighter TV screens to better medical diagnostics and more efficient solar panels, new research has discovered how to make more molecul

From brighter TV screens to better medical diagnostics and more efficient solar panels, new Curtin-led research has discovered how to make more molecules stick to the surface of tiny nanocrystals, in a breakthrough that could lead to improvements in everyday technology. Lead author Associate Professor Guohua Jia from Curtin's School of Molecular and Life Sciences, said the study investigated how the shape of zinc sulfide nanocrystals affected how well molecules, known as ligands, stick to their surface. "Ligands, play an important role in controlling the behaviour and performance of zinc sulfide nanocrystals in various important technologies," Associate Professor Jia said.

Chemical chameleon reveals novel pathway for separating rare-earth metals

Researchers at the Department of Energy's Oak Ridge National Laboratory have found a chemical "chameleon" that could improve the process used to purify rare-earth metals used in clean energy, medical and national security applications. The study, performed in collaboration with Vanderbilt University, is the latest of many efforts by ORNL's Chemical Sciences Division to lower the barriers to accessing metals called lanthanides, which are used widely in diverse products and applications, from biomedical imaging to industrial chemical production to electronics. There are 15 lanthanides, and they, along with two other elements, are collectively known as the rare-earth metals. The research is published in the Journal of the American Chemical Society.

#ligands

Trending Tags

Recently Viewed Tags

#ligands