Results 71 to 80 of about 373,610 (343)

Low temperature MQ NMR dynamics in dipolar ordered state

, 2013
We investigate analytically and numerically the Multiple Quantum (MQ) NMR dynamics in dipolar ordered spin systems of nuclear spins 1/2 at a low temperatures. We suggest two different methods of MQ NMR.
Furman, G. B., Meerovich, V. M., Sokolovsky, V. L.   +2 more
core   +1 more source

Sustainable Catalyst‐Free PLG Networks: Recyclability, Biodegradability, and Functional Performance

Advanced Functional Materials, EarlyView.
A catalyst‐additive free covalent adaptable network is developed from star‐shaped poly(lactide‐co‐glycolide) cross‐linked with pyromellitic dianhydride, enabling internal carboxylic acid‐driven transesterification. The resulting biodegradable network exhibits mechanical robustness (Young's modulus ≈1.6 GPa), complete recyclability, rapid biodegradation
Lars Schwarzer, Emilia Fulajtar, Seema Agarwal   +2 more
wiley   +1 more source

Design of in situ Solid-State NMR Rotor Inserts and Their Application to Catalytic Reactions

Chinese Journal of Magnetic Resonance
In situ solid-state nuclear magnetic resonance (NMR) serves as a powerful means to study catalytic reactions under operating conditions. Standard solid-state NMR rotors typically struggle to match the pressure and temperature of active reactions during ...
SHEN Xueyuan, WANG Ruichen, QI Guodong, XU Jun, DENG Feng   +4 more
doaj   +1 more source

Diels−Alder Topochemistry via Charge-Transfer Crystals:  Novel (Thermal) Single-Crystal-to-Single-Crystal Transformations [PDF]

, 2001
The solid-state [4+2] cycloaddition of anthracene to bis(N-ethylimino)-1,4-dithiin occurs via a unique single-phase topochemical reaction in the intermolecular (1:1) charge-transfer crystal.
Hubig, S. M., Kim, J. H., Kochi, Jay K., Lindeman, Sergey V.   +3 more
core   +1 more source

Investigation of Initial Lithiation of Silicon (100) Using Solid-State 7Li NMR

, 2014
Structural changes in amorphous LixSi during the initial lithiation of single crystal Si to amorphous LixSi were investigated as a function of Li flux and total charge using solid-state 7Li nuclear magnetic resonance (NMR) spectroscopy.
Chon, Michael J., Guduru, Pradeep R., Nadimpalli, Siva P. V., Sethuraman, Vijay A., Song, Myeonghun, Wang, Li-Qiong   +5 more
core   +1 more source

Synthesis, Crystal Structure, and Solid-State NMR Investigations of Heteronuclear Zn/Co Coordination Networks - A Comparative Study [PDF]

, 2013
Synthesis and solid-state NMR characterization of two isomorphous series of zinc and cobalt coordination networks with 1,2,4-triazolyl benzoate ligands are reported. Both series consist of 3D diamondoid networks with four-fold interpenetration.
Baias, M, Bertmer, M, Haase, J, Hofmann, J, Kobalz, M, Koenig, K, Krautscheid, H, Kuttatheyil, AV, Laessig, D, Lincke, J, Pickard, CJ   +10 more
core   +1 more source

Afterglow Solid-State NMR Spectroscopy [PDF]

, 2017
Biomolecular solid-state NMR experiments have traditionally been collected through detection of 13C or 15N nuclei. Since these nuclei have relatively low sensitivity stemming from their smaller gyromagnetic ratios relative to 1H, the time required to collect multi-dimensional datasets serves as a limitation to resonance assignment and structure ...
Gili, Abramov, Nathaniel J, Traaseth
openaire   +2 more sources

Scalable Polyelectrolyte Complex‐Based Sorbent With Hourly Sorption−Desorption Cycles for Multicyclic Atmospheric Water Harvesting in Arid Environments

Advanced Functional Materials, EarlyView.
A polyelectrolyte complex‐based sorbent is produced by scalable, environmentally benign aqueous phase inversion. Its porous, LiCl‐ and GO‐integrated architecture enables hourly adsorption−desorption cycles at low relative humidity (RH < 30%). A large‐scale prototype achieves multicyclic, solar‐driven atmospheric water harvesting of 1.37 L kg−1 day−1 ...
Seung‐Hwan Oh, Incheol Heo, Won Cheol Yoo, Soo‐Hyung Choi   +3 more
wiley   +1 more source

Mutarotational Kinetics and Glass Transition of Lactose

, 2006
We report for the first time real time in situ and quantitative measurements of the mutarotation reaction of lactose in the solid state. The experiments have been performed by 13C NMR. We show that mutarotation is initiated on heating the amorphous state,
Branca, Crowe, Crowe, Drapier-Beche, Earl, Fries, Garnier, Glasstone, Gottfried, Haase, Hagen, Hagen, Haque, Jean-François Willart, Kramers, Lefebvre, Lefort, Lerk, Libnau, Livingstone, Los, Marc Descamps, Massiot, Otsuka, O’Brien, Palazzo, Platteau, Plonka, Plonka, Rabinowitch, Ronan Lefort, Ryu, Sumi, Sumi, Vincent Caron, Willart, Willart, Yamabe, Yoshioka, Zhang   +39 more
core   +3 more sources

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source