In such a way that σ-aromaticity, π-aromaticity, etc., have become nowadays part of the modern chemist’s toolbox in order to describe general electron delocalization in ring-like electron deficient structures. The application of the theory to a vast number of clusters has shown that the ...
The first feature of the binding metal center which commonly strikes a coordination chemist's attention is the metal itself and therefore its position in the periodic table, although this is not necessarily the main aspect. General correlations between the electron acceptor and donor properties of ...
I am sceptical that humans are the main cause of climate change, and that it will be catastrophic in the near future. There is no scientific proof of this hypothesis, yet we are told “the debate is over”, the “science is settled”. My scepticism begins with the warmists’ certainty t...
"Life is about redox chemisty" leans, of course, on Albert Szent-Györgyi's famous but extremely difficult-to-pinpoint quote" Life is nothing but an electron looking for a place to rest". Is this view more useful than Schrödingers's negentropy? It depends on the meaning of 'useful...
The fundamentals of this paper were illustrated by Perutz during the opening Conference of the VIII International Congress of Biochemistry in Interlaken (CH). I remember sitting near my dear friend Takashi Yonetani in the grand Auditorium full of biochemists lissening at Max illustrating the 3D st...
Hence, to avoid this cryptic situation, the direct (hetero)arylation (DHA) appears to be method of choice, from the chemist point of view, to afford the next generation of π-conjugated materials [8–15]. The latter indeed offers several practical advantages such as (i) a simplified and ...
(SEM), Energy Dispersive Spectroscopy (EDS), X-Ray Diffractometry (XRD), Fourier Transform Spectroscopy Infrared-Attenuated Total Reflectance (FTIR-ATR), and colorimetric analysis (CIElab), and the Antimicrobial Activity Test (American Association of Textile Chemist and Colourists - AATCC Test Method...
GrahamLampardEBSCO_bspManufacturing Chemist
It is named after the German chemist Bernhard Tollens, who first reported the method (Tollens, 1882). Interestingly, the one-step process in the Tollens synthesis method gives AgNPs with a controlled size (Saito et al., 2003; Kvítek et al., 2005; He et al., 2006; Sarkar et al., ...
In 1828, a professor of pharmacology in Munich, Johann Andreas Buchner, isolatedsalacinfrom the extract of willow bark in water, and removed the tanins and other impurities.21In 1838 Rafaelle Piria, an Italian chemist working at the Sorbonne in Paris, dividedsalicininto a sugar component and ...