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Book Highlight: X-ray Nanochemistry

June 11, 2018

Ting Guo’s new book, “X-ray Nanochemistry”, has been published in eBook format on June 6. 2018. The book describes X-ray nanochemistry as a discipline and all the recent developments in this exciting field. To read, please visit https://www.springer.com/us/book/9783319780023 and click “Read this book on SpringerLink” (access provided by UC Davis Libraries).

A Mechanochromic Luminescent Chemical Container Assembled from Gold(I) Phosphine Building Blocks

June 01, 2018

In a recent publication, Daniel Walters, Xian Powers and others in the Balch/Olmstead group have prepared a novel, photoluminescent molecular cage that is entirely constructed from non-luminescent components.   In its crystalline form, the resulting molecular "box" suspends an anionic guest, a chloride ion, inside.  Crystals of the box change when subject to mechanical force, which causes their rearrangement into an isomeric helicate dimer that uses the original guest as a bridge between tw

Facile C−H Bond Metathesis Mediated by a Stannylene: A Sn(I) Radical Intermediate

May 07, 2018

In a recent publication, (Power and coworkers, Journal of the American Chemistry Society, 2018) describes a C-H Activation by a low-valent tin. EPR measurements indicates the presence of a one-coordinate RE : radical as the intermediate. This shows the first example of a C-H bond metathesis carried out under mild condition by Tin. This new class of low-coordinate tin radical may facilitate further exploration into practical applications of C-H activation by earth-abundant-metal catalysts. 

Solvent Effects on Growth, Crystallinity, and Surface Bonding of Ge Nanoparticles

May 07, 2018

In a recent publication (Bernard and coworkers, Inorganic Chemistry, 2018) the Kauzlarich lab describes the synthesis and characterization of Ge nanoparticles made in a mixed solvent system. Using NMR, they demonstrated that both solvents are acting as capping ligands and that the solvent ratio impacts the nanoparticle’s crystallinity and size.

More information at https://pubs.acs.org/doi/10.1021/acs.inorgchem.8b00334

Hallucinogenic Compound in Ayahuasca Shows Therapeutic Promise

April 27, 2018

Ayahuasca, a traditional Amazonian tisane used in religious and healing ceremonies, contains a complex mixture of psychoactive natural products.  The Olson Lab has recently discovered that N,N-dimethyltryptamine (DMT), the principal hallucinogenic alkaloid in this concoction, produces antidepressant effects in rodents and reduces fear in an animal model of post-traumatic stress disorder (PTSD).  This work highlights the potential for using psychedelics and related compounds for treating neuropsychiatric disorders.

Ultrafast spectroscopy reveals photoinduced charge transfer dynamics in iron-sulfur proteins

March 20, 2018

A combined effort between the Larsen, Cramer and Goodin labs characterized direct charge-transfer photodynamics in four iron-sulfur (FeS) proteins with femtosecond transient absorption spectroscopy. The labs identified multiple ligand-to-metal charge transfer populations were found to be induced by laser excitation that evolve into low lying charge-transfer states, which is mediated by the density of states and reorganization energy.

A new material with high thermoelectric efficiency at room temperature

February 20, 2018

A collaboration among several groups in chemistry and physics at UC Davis unraveled a new thermoelectric compound for direct thermal to electrical power generation. This material presents a new structure type and an optimized composition, resulting in remarkable efficiency in the temperature range of important applications, such as solar thermoelectric generators where heat harvested from the sun power the thermoelectric generation device.