Results 51 to 60 of about 1,561 (166)

Amide Methylation Empowers Concentrated Hydrogel Electrolytes for Wide‐Temperature Flexible Aqueous Sodium‐Ion Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
An aprotic poly(N,N‐dimethylacrylamide) matrix provides free C=O sites for strong ion solvation, establishing a stable and homogeneous gel phase. This unique polymer network effectively reduces H2O activity, enabling highly concentrated gel electrolytes for high‐voltage, wide‐temperature, and flexible aqueous sodium‐ion batteries.
Shibo Chai, Xianshengwei Zhang, Wenpin Li, Minghao Xu, Shengjun Zhai, Peng Gong, Yihang Zhang, Jiale Xia, Yuanyuan Li, Jinping Liu   +9 more
wiley   +1 more source

Chemoselective Aldehyde and Imine Reduction by a Macrocyclic Triazole–Borane Complex Triggered by a Non‐innocent Proton–Hydride Interaction

European Journal of Organic Chemistry, EarlyView.
This work describes the study on a new recyclable reagent, based on a macrocyclic triazole–borane complex. It showed high chemoselectivity for aldehyde reduction and reductive amination over ketones. This selectivity is driven by a noncovalent hydride–proton interaction that stabilizes the transition state for aldehydes but is sterically inhibited in ...
Luca Di Marino, Artur Brotons Rufes, Rosaria Schettini, Giorgio Della Sala, Francesco De Riccardis, Chiara Costabile, Irene Izzo   +6 more
wiley   +1 more source

Aggregation-induced emission effect on turn-off fluorescent switching of a photochromic diarylethene

Beilstein Journal of Organic Chemistry, 2019
Background: Diarylethenes are well-known photochromic compounds, which undergo cyclization and cycloreversion reactions between open- and closed-ring isomers.
Luna Kono, Yuma Nakagawa, Ayako Fujimoto, Ryo Nishimura, Yohei Hattori, Toshiki Mutai, Nobuhiro Yasuda, Kenichi Koizumi, Satoshi Yokojima, Shinichiro Nakamura, Kingo Uchida   +10 more
doaj   +1 more source

Leveraging Isomerization of Azo Dyes and Imines for the Facile Synthesis of Oxadiazepines and Related Heterocycles

Journal of Heterocyclic Chemistry, EarlyView.
A robust method for synthesizing substituted oxadiazepines and related heterocycles via intramolecular SNAr is detailed. Under mild conditions, this methodology has been leveraged to afford products of varying electronic and aryl nature in up to 99% yields.
Matthew W. Reeves, Christian A. Guzman, Herbi Yuliantoro, Peng Li, Elizabeth R. Young   +4 more
wiley   +1 more source

Fluorescence and photostability studies of anthracene-9-carboxylic acid in different media

International Journal of Photoenergy, 2000
Electronic absorption and fluorescence spectra of anthracene-9-carboxylic acid (ANCA) were studied in different homogeneous solvents, binary protic/aprotic solvent mixtures and in heterogeneous solutions of the cationic cetyltrimethyl ammonium bromide ...
M. S. A. Abdel-Mottaleb, H. R. Galal, A. F. M. Dessouky, M. El-Naggar, D. Mekkawi, S. S. Ali, G. M. Attya   +6 more
doaj   +1 more source

Interaction With Surface Spins as a Contribution to Nuclear Magnetic Relaxation of Liquids Adsorbed in Mesoporous Materials

Magnetic Resonance in Chemistry, EarlyView.
Liquids at silica interfaces experience demixing as a consequence of their respective polarity. The distribution of liquids and their primary relaxation contributions are studied by surface modification with OD and radical moieties, respectively. ABSTRACT NMR relaxation of liquids in the presence of solid interfaces, such as silica gel or porous glass,
Carlos Mattea, Hannah Leptin, Moritz Schmidt, Siegfried Stapf   +3 more
wiley   +1 more source

Transport properties of protic and aprotic guanidinium ionic liquids [PDF]

, 2018
Ionic liquids (ILs) are a promising class of solvents, functional fluids and electrolytes that are of high interest for both basic as well as applied research.
Rauber, Daniel, Kickelbick, Guido, Natter, Harald, Philippi, Frederik, Zapp, Josef, Hempelmann, Rolf   +5 more
core   +1 more source

New green strategies for labelling of glycoprotein N-glycans [PDF]

RSC Advances
2,2,5,5-Tetramethyloxolane (TMO) and Cyrene are recognised as sustainable, bio-based solvents that match the analytical performance of acetonitrile (MeCN) for fluorescent labelling of N-glycans.
Emily Harlin, Fergal Byrne, Robert B. P. Elmes, Róisín O'Flaherty   +3 more
doaj   +1 more source

Unspecific Molecular Adsorption (UMA) Sample Preparation Method for Bottom‐up and Whole Protein Analysis: The Foundation

PROTEOMICS, EarlyView.
ABSTRACT The protein sample preparation methods for shotgun proteomics are nowadays well‐established unlike the ones for whole protein analysis. The goal of my work has been to create a simple methodology which provides a single uncomplicated sample preparation tool for these two fields. Nowadays the bulk of proteomics work is done using detergents for
Alexandre Zougman
wiley   +1 more source

PGSE and NOE NMR Evidence for Higher Order Aggregation in Some Cationic Ruthenium Complexes in Both Protic and Aprotic Solvents

, 2016
PGSE and NOE NMR measurements were carried out for complexes [Ru(η6-cymene)((2-R-C6H4)NC(Me)C(Me)N(2-R-C6H4))Cl]X (X = BF4 or BPh4) in both protic and aprotic solvents with a relative permettivity (εr) ranging from 2.27 (benzene-d6) to 46.45 (dimethyl
Gianfranco Bellachioma (2239336), Stefano Sabatini (1316760), Eric Clot (1574785), Giuseppe Cardaci (2942217), Alceo Macchioni (1348728), Daniele Zuccaccia (1402813)   +5 more
core   +1 more source