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排序方式: 共有755条查询结果,搜索用时 8 毫秒
751.
Etienne Levernier Khaoula Jaouadi Heng-Rui Zhang Dr. Vincent Corcé Aurélie Bernard Geoffrey Gontard Claire Troufflard Dr. Laurence Grimaud Dr. Etienne Derat Dr. Cyril Ollivier Prof. Louis Fensterbank 《Chemistry (Weinheim an der Bergstrasse, Germany)》2021,27(34):8782-8790
While the generation of aryl radicals by photoredox catalysis under reductive conditions is well documented, it has remained challenging under an oxidative pathway. Because of the easy photo-oxidation of alkyl bis-catecholato silicates, a general study of phenyl silicates bearing substituted catecholate ligands has been achieved. The newly synthesized phenyl silicates have been fully characterized, and their reactivity has been explored. It was found that, thanks to the substitution of the catecholate moiety, notably with the 4-cyanocatecholato ligand, the phenyl radical could be generated and trapped. Computational studies provided a rationale for these findings. 相似文献
752.
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option. 相似文献
753.
754.
Etienne Garand Torsten Wende Daniel J. Goebbert Risshu Bergmann Gerard Meijer Daniel M. Neumark Knut R. Asmis 《ChemInform》2010,41(18):no-no
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option. 相似文献
755.
Dr. Youssef Doubi Prof. Bouchaib Hartiti Prof. Maryam Siadat Prof. Hicham Labrim Prof. Salah Fadili Prof. Mounia Tahri Prof. Mohamed Stitou Prof. Philippe Thevenin Etienne Losson 《欧洲无机化学杂志》2023,26(22):e202300047
The semiconductor realization is a very significant stage in gas sensor application. Herein, the Mn3O4 semiconductor was deposited using chemical spray pyrolysis. The effect of deposition temperature on structural, vibrational optical and electrical Mn3O4 thin layers properties were investigated through: X-ray diffraction, Raman spectroscopy, UV-visible spectrophotometer, and two points electrometers respectively. The X-ray diffraction showed the appearance of spinel phase of tetragonal Mn3O4 with strong formation direction along (101) plan and without any secondary phase indicating the formation of pure Mn3O4. The Raman spectroscopy confirmed the results obtained in XRD and certified the high-quality formation of Mn3O4. In addition, the crystallinity improvement (the increase of crystallite size and the decrease of dislocation density) was caused by the increasing of deposition temperature from 350 °C to 450 °C. Optical properties such as transmittance, absorbance and band gap energy were extracted by UV-Visible spectrophotometer. Thus, low transmittance, high absorbance and small band gap energy were observed at the highest substrate temperature (450 °C). The electrical conductivity showed good values between 4.83 and 13.89 mS.cm−1. These properties make Mn3O4 an appropriate material to be used as a sensitive layer in gas sensors applications. 相似文献