248 results found for chemistry

Until recently, most of the 24 d-block transition metals had been used primarily as useful materials for (i) construction and also as tools and containers, etc., (Ti, Zr, Fe and their alloys with V, Cr, Mn, Co, Ni, etc.), (ii) precious and ornamental....

In an evangelical spirit, three vignettes will be presented that have the character of molecular parables: stories with lessons that transcend the specific details.(1) How knowledge of the orientation of a methyl group with respect to a neighboring d....

Catalysis by solid surfaces is, among others, of importance for the chemical industry (e.g. the Haber-Bosch process) as well as for environmental chemistry (car exhaust catalyst).  Surface physical techniques enable investigation of the underlying e....

The palladium-catalyzed cross-coupling reaction between different types of organoboron compounds and various organic halides in the presence of base provides a powerful and general methodology for the formation of carbon-carbon bonds.  The (sp3)C-B ....

G protein coupled receptors (GPCRs) conduct the majority of cellular responses to hormones and neurotransmitters, and are therefore the largest group of pharmaceutical targets for a broad spectrum of diseases.  Identification of genes for GPCRs, ini....

Olefin metathesis is an irresistible way to make C=C bonds catalytically in organic molecules and polymers, both as a consequence of its very nature, i.e. the synthesis of C=C bonds from C=C bonds, and because of the control that can be exercised thr....

Much of the chemical industry is based on processes that were developed decades ago.  The change in the cost of petroleum carbon and energy sources and the need to control emissions of carbon dioxide and other pollutants will change the rules of the....

Supramolecular chemistry lies beyond molecular chemistry.  It aims at implementing highly complex chemical systems from molecular components held together by non-covalent intermolecular forces and effecting molecular recognition, catalysis and trans....

We consider two fields of single molecule studies of intermittently fluorescing systems.  In both fields the intermittency is assumed to involve diffusion controlled electron transfer.  One of these studies involves the initial steps in dye-sensiti....

Some observers might think that fierce scientific competition borders on a rat race.  According to Wikipedia: "A rat race is an endless, self-defeating, or pointless pursuit.  It conjures up the image of the futile efforts of a lab rat trying to es....

Jonathan Christian discusses what it means to be a material/physical chemist. He shows how a physical chemist characterizes materials using his research into Chromium 3+ polyoxometalates.