Results 91 to 100 of about 300,802 (279)
Indonesian Journal of Chemistry, 2010 Distribution of A and B isomers of crown-ether DC18C6 on their organic and water phases (chloride, nitrate and sulphocyanide salts) and extraction of alkali and earth alkali metals has been studied.
Bambang Rusdiarso
doaj +1 more source
Crown Ether-Functionalized Polybenzoxazine for Metal Ion Adsorption
, 2020 In this study, we synthesized a new crown ether-functionalized benzoxazine monomer (crown-ether BZ) in high yield and purity through reduction of the Schiff base prepared from a dibenzo[18]crown-6 diamine derivative and salicylaldehyde and subsequent ...
Mohamed Gamal Mohamed (2886701) +3 more
core +1 more source
Counterion Effects in Decatungstate Photocatalysis
European Journal of Organic Chemistry, EarlyView.Decatungstate photocatalysis is often discussed from an anion‐centered perspective, treating the counterion as a passive charge‐balancing species. This review highlights that counterion identity can instead profoundly influence catalyst solubility, ion pairing, aggregation, stability, substrate accessibility, and catalytic performance.
Florence Babawale +2 more
wiley +1 more source
Current Density Performances in Poly Ether Ether Keton Membrane for Direct Methanol Fuel Cells [PDF]
, 2012 The objective of this study focuses on the characterization of poly ether ether ketone (PEEK) membranes for direct methanol fuel cells (DMFC) application. The PEEK membrane was modified with sulfonation in NMP solvent.
E. L. , Dewi +5 more
core +1 more source
Study of Micellar Behavior of Crown Ether and Tetraethylammonium Bromide in Aqueous Media
E-Journal of Chemistry, 2010 Conductivity measurements have been carried out to study the micellar behavior of tetraethylammonium bromide in presence of 15-crown-5 in aqueous media. The measurements were carried out at 298.15 K as a function of surfactant concentration with varying ...
R. D. Singh, Rajni Garg
doaj +1 more source
Functionalization of 1,3-Phenylene-16-crown-5 via Direct Lithiation
, 2016 1,3-Phenylene-16-crown-5 (1) was selectively and quantitatively lithiated at the intraannular 2-position with n-butyllithium, making functionalization of this system easier than that of the 1,3-xylylene crown ethers.
Otto S. Akkerman (3079962) +6 more
core +1 more source
Electron, EarlyView.Physics‐driven advances in optical nanobiosensors for rapid, miniaturized, and point‐of‐care diagnostics for next‐generation decentralized and personalized healthcare based on sensor intelligence. ABSTRACT Public health emergencies and the escalating burden of chronic diseases necessitate a paradigm shift from centralized laboratory testing to rapid ...
Vishal Chaudhary +5 more
wiley +1 more source
Crystals, 2019 Stimuli-responsive materials with coexisting nonlinear optical (NLO) and dielectric properties are technologically important, which enable simultaneous conversion of optoelectronic properties between different states under external stimuli. By rationally
Jing Jing +5 more
doaj +1 more source
The synthesis and study of an amine functionalized crown ether
, 2004 This study has resulted in a route to the first known NHZ functionalized xylenebased crown ether, 5-amino-2-methoxy-1,3-xylyl-18-crown-5. The route involves preparing 5-azido-2-methoxy-1,3-xylyl-18-crown-5 from 5-bromo-2-methoxy-1,3-xylyl18-crown-5 by ...
Yonekawa, Sayuri
core
Towards ionic channels with crown ethers and calix[n]arenes (with n=6,8) [PDF]
, 2006 This thesis reports the new crystal structures of crown ethers and calixarenes as well as the ionic conduction properties of crown ether channels. Chapter I gives general knowledge about ion channels.
Bergougnant, Remi
core +1 more source