Results 41 to 50 of about 231,461 (261)

Spectral Analyses of a Novel Ibuprofen-Phillygenin Ester

Chinese Journal of Magnetic Resonance, 2018
An ibuprofen-phillygenin ester was synthesized through the Schotten-Baumann reaction with ibuprofen and phillygenin as the starting materials. Ultraviolet absorption (UV) spectrum, infrared absorption (IR) spectrum, matrix-assisted laser desorption ...
FAN Hong-yu
doaj   +1 more source

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

Advanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng, Qian Yao, Yanan Sun, Hongyu Lv, Zhongchao Bai, Guoliang Zhang, Nana Wang, Jian Yang   +7 more
wiley   +1 more source

Towards Optimizing Neural Network-Based Quantification for NMR Metabolomics

Metabolites
Background: Quantification of metabolites from nuclear magnetic resonance (NMR) spectra in an accurate, high-throughput manner requires effective data processing tools. Neural networks are relatively underexplored in quantitative NMR metabolomics despite
Hayden Johnson, Aaryani Tipirneni-Sajja
doaj   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source

Bio‐Inspired Synthesis of Macroporous Single Crystal Particles as Scattering Agents

Advanced Functional Materials, EarlyView.
A general strategy is presented that delivers unique, single‐crystal microparticles that combine submicron macroporosity and uniform particle shapes. A bioinspired approach is used to occlude three distinct types of additives – polystyrene microspheres, polymer vesicles and amino acids – within calcite single crystals, and subsequent thermal annealing ...
Stephanie E. Foster, Gianni Jacucci, Ouassef Nahi, Thomas Kress, Zabeada Aslam, Stuart Micklethwaite, Alexander N. Kulak, Rik Drummond‐Brydson, Melinda J. Duer, Yi‐Yeoun Kim, Silvia Vignolini, Fiona C. Meldrum   +11 more
wiley   +1 more source

Implantable Ionic Memristors Based on Natural Polymer Heterojunctions

Advanced Functional Materials, EarlyView.
We report an implantable natural polymer‐based ionic memristor composed of hyaluronic acid, chitosan, and PDMS. The device achieved 98.94% accuracy in MNIST classification while reducing training time by 36.8% compared with a conventional artificial neural network (ANN).
Dong‐yup Lee, Byung Ik Park, Gihyeon Yim, Hyunjae Yoo, Sangjun Ma, Jundong Park, Jeong‐Yun Sun   +6 more
wiley   +1 more source

Semiconducting Polymers Post‐Functionalized With Ureido‐Pyrimidinone for Robust Stretchable Transistors

Advanced Functional Materials, EarlyView.
The design of intrinsically robust stretchable semiconducting polymers was achieved through OTBS‐mediated post‐functionalization of PDPP2T side chains with UPy units, generating dual hydrogen‐bonding motifs comprising weaker urethane linkages and strong quadruple UPy interactions along the long alkyl side chain, which is crucial for achieving desirable
Dinda Bazliah, Livy Laysandra, Kosuke Terayama, Xingyu Yang, Atsushi Isobe, Tai‐Chin Chiang, Tsuyoshi Michinobu, Yu‐Cheng Chiu   +7 more
wiley   +1 more source

A robust, deep learning-based analysis of time-domain signals for NMR spectroscopy

Journal of Analytical Science and Technology
When analyzing the Free Induction Decay (FID) signal produced by nuclear magnetic resonance (NMR) spectroscopy, Fourier transforms (FT) are used to decompose time-domain signals arising from nuclear interactions.
Kyungdoe Han, Eunhee Kim, Kyoung-Seok Ryu, Donghan Lee   +3 more
doaj   +1 more source

The NMR Spectra of a-Glycols

The Journal of the Society of Chemical Industry, Japan, 1965
α-グリコールの異性体のNMRスペクトルをとった結果,その水酸基の立体配置によって水酸基のプロトンの化学シフトに差が現われた。すなわち,常温で液体のα-グリコールでは,その水酸基のプロトンのシグナルはエリスロ体またはトランス体がスレオ体またはシス体より低磁場に現われた。この傾向は塩基性溶媒,ピリジンを溶媒とした時にも見られた。酸性溶媒を用いた場合には水酸基のプロトンはカルボキシル基のプロトンとexchangeして, 1本のconcetra-tion shiftを示すが, やはり水酸基のプロトンの挙動は塩基性溶媒の場合と同じであった。しかし, 5 員環化合物では酸の濃度が高いとき,異性体間の傾向が逆になることを見出した。
Yasuhisa SENDA, Shin-ichi SASAKI, Tsuneo IKENOUE   +2 more
openaire   +2 more sources

C-13 NMR spectra of aspulvinones. [PDF]

Agricultural and Biological Chemistry, 1979
(1979). C-13 NMR Spectra of Aspulvinones. Agricultural and Biological Chemistry: Vol. 43, No. 2, pp. 403-404.
SUGIYAMA, Hiroshi, OJIMA, Nobutoshi, KOBAYASHI, Masaki, SENDA, Yasuhisa, ISHIYAMA, Jun-ichi, SETO, Shuichi   +5 more
openaire   +2 more sources