Results 61 to 70 of about 231,461 (261)

Donor‐Engineered Chiral Indium–Salen Complexes for Tunable Circularly Polarized Luminescence

Advanced Functional Materials, EarlyView.
Chiral indium–salen complexes bearing electronically and structurally diverse donor substituents are presented as modular main‐group luminophores exhibiting tunable blue‐to‐green circularly polarized luminescence. Donor engineering systematically controls frontier‐orbital distribution, intraligand charge transfer, and excited‐state relaxation ...
Haein Kim, Minseo Ji, Khuslen Bazarragchaa, Yubin Choi, Gahyeon Baek, Ji Hye Lee, Heekyung Park, Houng Kang, Hyonseok Hwang, Huiyeong Ju, Jun Hui Park, Youngjo Kim, Min Kim, Youngmin You, Myung Hwan Park   +14 more
wiley   +1 more source

Pressure‐Assisted Dimensional Transformation of 2D Hydrogenated Borophene into 0D Boron Quantum Dots

Advanced Functional Materials, EarlyView.
Hydrogenated borophene (HB) is transformed into distinct boron nanostructures through a solvent‐free thermal process. Under flowing nitrogen, hydrogen escape promotes reconstruction into B2O3 nanoplatelets, whereas hydrogen‐induced pressure under sealed conditions facilitates fragmentation into boron quantum dots.
Ozden Gunes Yildiz, Ramin Yazdaanpanah, Yongfeng Guo, Pouriya Naziri, Sachin Kulkarni, Martina Mercurio, Maria Cristina Larciprete, Ilaria Fratoddi, Paul Simon, Wan‐Lu Li, Koray Aydin, Umut Aydemir   +11 more
wiley   +1 more source

CO2‐to‐CO Conversion in a Gas‐Fed, Zero‐Gap, PEM Electrolyzer Enabled by Polycations and Nitrogen‐Doped Carbon‐Supported Cobalt Nanoparticles

Advanced Functional Materials, EarlyView.
A gas‐fed, zero‐gap, PEM CO2 electrolyzer is realized by incorporating PDDA+ ions onto the carbonaceous Co/N‐C electrocatalyst, with gaseous H2 and CO2 fed into the anode and cathode, respectively. Operating without an aqueous electrolyte, the system sustains a peak FECO of 65.1% at 100 mA cm−2. ABSTRACT Electrochemical carbon dioxide reduction (ECO2R)
Yuen Leong Chow, Hsi‐Wen Wu, Aimin Li, Yalou Guo, Duhong Chen, Jie Zhang, Paul A. Webley   +6 more
wiley   +1 more source

Acetoacetates Derived From Vegetable Oils: A Platform for Tailor‐Made Vinylogous Urethane Foams

Advanced Functional Materials, EarlyView.
A renewable vegetable oil is converted into acetoacetate‐functionalized precursors for the preparation of catalyst‐free vinylogous urethane foams. Room‐temperature foaming with n‐pentane generates lightweight cellular materials, while the choice of amine enables control over foam structure and mechanical properties.
Krzysztof Polaczek, Priscilla de Souza Lima, Olga Gotkiewicz, Ondrej Kopilec, Radka Hobzova, Lívia Kanizsová, Mikelis Kirpluks, Ondrej Sedlacek, Hynek Beneš   +8 more
wiley   +1 more source

Structure characterization with NMR molecular networking

Communications Chemistry
Nuclear Magnetic Resonance (NMR) is among the most widely used techniques for structure determination, yet automated workflows remain underdeveloped compared to mass spectrometry.
Cailum M. K. Stienstra, Jaegun Song, David Healey, Gennady Voronov, Eric Gardner, Abhishek Patel, Venkat Macherla, Christoph A. Krettler, Tobias Kind, Pieter C. Dorrestein, Daniel Domingo-Fernández   +10 more
doaj   +1 more source

Tunnel Effect in Widezone Crystals with Proton Conductivity [PDF]

Журнал нано- та електронної фізики, 2014
The spectrum of thermally stimulated depolarization currents, dielectric losses, thermally stimulated luminescence, IR transmission and absorption spectra and NMR-spectra of protons in widezone hydrogen-bonded crystals had been investigated.
V.M. Timokhin
doaj  

The NMR Spectra of Alkylbenzene

The Journal of the Society of Chemical Industry, Japan, 1967
23種類のモノアルキルベンゼンのNMRスペクトルから,プロトンのいろいろの型による化学シフトを測定した。側鎖アルキル基のα,β,γ位の炭素についているプロトンの化学シフトは,ベンゼン環の環電流によって顧著な影響を受け,αとβのプロトンは低磁場の方向に,γのプロトンは高磁場の方向にシフトする。これらの化学シフトの範囲を,側鎖アルキル基のプロトンの型および位置について詳細に決定した。その結果,ベンゼン環に近いところに枝分かれしたアルキル基があると,化学シフトに対する環電流の影響はより強くなることが認められた。これらのデーターを組合わせると,アルキルベンゼンの側鎖の詳細な構造について多くの情報を提供するであろう。
Kazuyoshi ITOH, Sawako HAMANAKA, Fukiko YAMADA, Masaya OGAWA   +3 more
openaire   +2 more sources

Photo‐Switchable Molecular Module Programming PET Biodegradation in Aquatic Environments

Advanced Functional Materials, EarlyView.
We address the plastic durability paradox by integrating an itaconic acid–derived pyrrolidone module into polymer backbones. Sunlight in water triggers Norrish Type I ring‐opening and hydrophilization, enabling rapid biodegradation into nontoxic minerals.
Mohammad Asif Ali, Jixin Zheng, Satoshi Wakai, Jie Liu, Hidetaka Nomaki, Misato Tsukatani, Noriyuki Isobe, Jingcheng Sang, Yuriko Aoki, Hideo Okamura, Daisuke Sasaki, Chiaki Ogino, Yuzo Yamazaki, Takashi Nishikaze, Kenji Takada, Maiko K. Okajima, Tatsuo Kaneko   +16 more
wiley   +1 more source

Photo‐Degradable Polyester Networks and Multi‐Photon Printed Objects Based on Cyclic Ketene Acetals

Advanced Functional Materials, EarlyView.
The current work introduces a photoreversible polyester network derived from radical ring‐opening polymerization of cyclic ketene acetals. It combines photoreversible cross‐linking with initiator‐free multi‐photon printing. Reversible network formation, tunable mechanical properties, and selective degradation highlight its potential as a versatile ...
Till Meissner, Julian Fanelli, Vinh Xuan Truong, Rob Jones, Jens Gaitzsch, Christopher Barner‐Kowollik   +5 more
wiley   +1 more source

NMR data for the hydroxyl groups detected by NOESY spectra in sesquiterpene lactones

Data in Brief, 2019
In this article we present the correlations observed in the NOESY spectra, which provide direct and unequivocal detection of hydroxyl groups occurring in the chemical structures of three sesquiterpene lactones - a germacranolide (8α-(E)-4 ...
Jaromir Budzianowski, Joanna Nawrot, Gerard Nowak   +2 more
doaj   +1 more source