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981.
Ng Wei Wuen Thiam Hui San Pang Yean Ling Lim Yun Seng Wong Jianhui 《Journal of Solid State Electrochemistry》2023,27(6):1477-1492
Journal of Solid State Electrochemistry - Getting the direct methanol fuel cell (DMFC) closer to mass production requires the creation of a high-performance and long-lasting proton exchange... 相似文献
982.
Five‐coordinate bicycloazastannoxides containing a β‐hydroxy‐α‐amino acid moiety were synthesized. By hydrolysis under the action of 10% HCl, five β‐hydroxy‐α‐amino acids were prepared, and their structures were characterized by 1H NMR spectroscopy, MS, and elemental analyses. The mechanism of the hydrolysis of the organotin (IV) complexes is discussed, and the yields of diastereomers are investigated by the HPLC method. This represents a new method for preparing β‐hydroxyl‐α‐amino acids. © 1999 John Wiley & Sons, Inc. Heteroatom Chem 10: 183–186, 1999 相似文献
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Estibaliz Ruiz-Bilbao Dr. Amaia Iturrospe Dr. Santiago Reinoso Dr. Beñat Artetxe Dr. Garikoitz Beobide Dr. Leire San Felices Prof. Luis Lezama Prof. Juan M. Gutiérrez-Zorrilla Dr. Shaza Darwish Dr. Debobroto Sensharma Prof. Michael J. Zaworotko 《Angewandte Chemie (International ed. in English)》2023,62(42):e202307436
The 3D hybrid framework [{Cu(cyclam)}3(κ-Mo8O27)] ⋅ 14H2O ( 1 ) (cyclam=1,4,8,11-tetraazacyclotetradecane) undergoes sequential single-crystal-to-single-crystal transformations upon heating to afford two different anhydrous phases ( 2 a and 3 a ). These transitions modify the framework dimensionality and enable the isomerization of κ-octamolybdate (κ-Mo8) anions into λ ( 2 a ) and μ ( 3 a ) forms through metal migration. Hydration of 3 a involves condensation of one water molecule to the cluster to afford the γ-Mo8 isomer in 4 , which dehydrates back into 3 a through the 6 a intermediate. In contrast, 2 a reversibly hydrates to form 5 , exhibiting the same Mo8 cluster as that of 1 . It is remarkable that three of the Mo8 clusters (κ, λ and μ) are new and that up to three different microporous phases can be isolated from 1 ( 2 a , 3 a , and 6 a ). Water vapor sorption analyses show high recyclability and the highest uptake values for POM-based systems. The isotherms display an abrupt step at low humidity level desirable for humidity control devices or water harvesting in drylands. 相似文献
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Ezio Rizzardo John Chiefari Bill Y.K. Chong Frances Ercole Julia Krstina Justine Jeffery Tam P.T. Le Roshan T.A. Mayadunne Gordon F. Meijs Catherine L. Moad Graeme Moad San H. Thang 《Macromolecular Symposia》1999,143(1):291-307
This paper describes a versatile and effective method for the control of free radical polymerization and its use in the preparation of narrow polydispersity polymers of various architectures. Living character is conferred to conventional free radical polymerization by the addition of a thiocarbonylthio compound of general structure S=C(Z)SR, for example, S=C(Ph)SC(CH3)2Ph. The mechanism involves Reversible Addition-Fragmentation chain Transfer and, for convenience of referral, we have designated it the RAFT polymerization. The process is compatible with a very wide range of monomers including functional monomers such as acrylic acid, hydroxyethyl methacrylate, and dimethylaminoethyl methacrylate. Examples of narrow polydispersity (≤1.2) homopolymers, copolymers, gradient copolymers, end-functional polymers, star polymers, A-B diblock and A-B-A triblock copolymers are presented. 相似文献
989.
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