Isolation and Electrochemical Property of Ho<sub>2</sub>O@C<sub>90</sub> Isomers
نویسندگان
چکیده
Four oxide clusterfullerenes Ho 2 O@C 90 (I–IV) were prepared by a modified arc discharge method and isolated multistage high performance liquid chromatography procedure. Based on their vis-NIR spectra, the carbon cage symmetries in (I, III, IV) are confirmed to be C (43)-C , (40)-C (41)-C respectively. Electrochemical studies display that first second reduction potentials of isomers close those Er @C ones, but much lower than Sm@C ones. Moreover, it is found electrochemical band gaps also very isomers. A detailed investigation redox based EMFs reveals endohedral clusters/atoms have greater effect properties EMFs.
منابع مشابه
asymptotic property of order statistics and sample quntile
چکیده: فرض کنید که تابعی از اپسیلون یک مجموع نامتناهی از احتمالات موزون مربوط به مجموع های جزئی براساس یک دنباله از متغیرهای تصادفی مستقل و همتوزیع باشد، و همچنین فرض کنید توابعی مانند g و h وجود دارند که هرگاه امید ریاضی توان دوم x متناهی و امیدریاضی x صفر باشد، در این صورت می توان حد حاصلضرب این توابع را بصورت تابعی از امید ریاضی توان دوم x نوشت. حالت عکس نیز برقرار است. همچنین ما با استفاده...
15 صفحه اولIsolation and Identification of Streptomyces ramulosus from Soil and Determination of Antimicrobial Property of its Pigment
Background and objective: Pigment production by microorganisms is important due to more rapid growth, higher efficiency, easier extraction, and antimicrobial effects compared to other methods. The aim of the present study is to isolate and identify antibiotic pigment-producing actinomycetes from the soil of the Persian Gulf and to evaluate the antibiotic activity of their pigments in the second...
متن کاملIsolation of two isochlorogenic acid isomers from phenolic rich fraction of Artemisia turanica Krasch.
Total phenolic content (TPC) and antioxidant capacity of five different extracts (petroleum ether (40-60), dichloromethane, ethyl acetate, ethanol and ethanol-water (1:1 v/v)) of Artemisia turanica (A. turanica) aerial parts were determined and phytochemical study on the most promising extract was carried out. Folin–Ciocalteu method, 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging test...
متن کاملProduction, isolation and structural characterization of [92]fullerene isomers.
High-resolution 13C NMR has been used to structurally characterize a single isomer possessing C2 molecular symmetry as well as an inseparable mixture of other isomers of [92]fullerene, produced from dysprosium arc-burned soot, separated and isolated via multi-stage recycling HPLC.
متن کاملIsolation of rotational isomers and developments derived therefrom
Isolation of rotational isomer models of ethane-type molecules is described. We could experimentally prove that, if rotational isomers whose molecular shape was chiral, the molecule could be optically active, even though it did not carry an asymmetric carbon atom. As an extension, other types of stereochemically fundamental and optically active molecules were isolated and their absolute stereoc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of The Electrochemical Society
سال: 2022
ISSN: ['0013-4651', '1945-7111']
DOI: https://doi.org/10.1149/1945-7111/ac4f74