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151.
Simon Eder Dong-Joo Yoo Dr. Wojciech Nogala Matthias Pletzer Dr. Alejandro Santana Bonilla Dr. Andrew J. P. White Dr. Kim E. Jelfs Prof. Martin Heeney Prof. Jang Wook Choi Dr. Florian Glöcklhofer 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2020,132(31):13058-13064
Aromatic organic compounds can be used as electrode materials in rechargeable batteries and are expected to advance the development of both anode and cathode materials for sodium-ion batteries (SIBs). However, most aromatic organic compounds assessed as anode materials in SIBs to date exhibit significant degradation issues under fast-charge/discharge conditions and unsatisfying long-term cycling performance. Now, a molecular design concept is presented for improving the stability of organic compounds for battery electrodes. The molecular design of the investigated compound, [2.2.2.2]paracyclophane-1,9,17,25-tetraene (PCT), can stabilize the neutral state by local aromaticity and the doubly reduced state by global aromaticity, resulting in an anode material with extraordinarily stable cycling performance and outstanding performance under fast-charge/discharge conditions, demonstrating an exciting new path for the development of electrode materials for SIBs and other types of batteries. 相似文献
152.
I.R. Bonilla 《Journal of Quantitative Spectroscopy & Radiative Transfer》1982,28(6):527-529
The normal modes of the Raman-active phonons in the center of the Brillouin zone in a natural monocrystal of Mg2SiO4 were measured by using Raman scattering. All of the modes predicted by group theory were observed and measured. Some deviations from previously published values in synthetic samples were observed for the low energy phonons. 相似文献
153.
Daniel A. Guerrero Bonilla María G. Granda-Albuja Mabel Guevara Gabriel A. Iturralde Tatiana Jaramillo-Vivanco Francesca Giampieri 《Natural product research》2020,34(18):2652-2655
AbstractChuquiraga jussieui J.F.Gmel is grown between 3000 and 5000 meters above sea level throughout the Andean region of Ecuador and used by the indigenous populations of the Andes for medicinal purposes. Here, we determined the total phenolic, flavonoids, vitamin C and carotenoids content of the leaves and flowers of Ch. jussieui J.F.Gmel from different highlands of Ecuador as well as the capacity of a crude methanolic extract from the both parts of the plant to scavenge free radicals and protect red blood cell membranes from lipid oxidation. The leaves showed a high bioactive compound content in comparison to the flowers. The crude extract from the leaves proved to be more effective than the flowers in reducing iron and scavenging the DPPH, O2? and H2O2 radicals, as well as in protecting cellular membrane against lipid oxidation, demonstrating that Ch. jussieui J.F.Gmel represents an important source of bioactive compounds with relevant healthy properties. 相似文献