Results 151 to 160 of about 283,318 (216)

Characterization of <i>Xiaoqu Qingxiangxing</i> Baijiu by gas chromatography-olfactometry, quantitative measurements, aroma recombination, and omission experiments. [PDF]

Food Chem X
Li C, Yin L, Zhu W, Luo M, Zou M, Song Y, Zhang Y, Qiu S, Zeng X, Yan Y.   +9 more
europepmc   +1 more source

Flavin Catalysts in Organic Synthesis

Angewandte Chemie, EarlyView.
Flavins and their congeners are potent catalysts for organic synthesis inspired by enzymatic transformations. In addition to catalysis in the flavin ground state via covalent intermediates, the excited singlet and triplet states unlock applications including photooxidation, photoreduction, and energy transfer via sensitization.
Jan Freudenberg, Golo Storch
wiley   +2 more sources

Microenvironmental Tuning in Isostructural Conjugated Metal–Organic Frameworks for Superior Photocatalytic H2O2 Generation

Angewandte Chemie, EarlyView.
Two isostructural conjugated‐MOFs (Fe‐Tp and Mn‐Tp) photocatalysts were engineered with nonequivalent microenvironmental redox tuning for hydrogen peroxide production. The manganese analog engages both the oxygen reduction reaction and the water oxidation reaction while suppressing decomposition, delivering 10 487 µmol g−1 h−1 with an apparent quantum ...
Kayaramkodath Chandran Ranjeesh, Avanti Chakraborty, Pilar Pena Sánchez, Jose Ignacio Martinez, Abdul Khayum Mohammed, Nada Elmerhi, Stefano Canossa, Matjaž Finšgar, Felipe Gándara, Pradip Pachfule, Dinesh Shetty   +10 more
wiley   +2 more sources

Unveiling key aroma-active compounds of two distinct aroma-types oriental melon: An integrated sensomics approach utilizing GC × GC-O-TOF-MS, GC-MS, aroma recombination and omission experiments. [PDF]

Food Chem X
Li X, Zhang C, Li S, Wang H, Yu P, Shao H, ShenhaoWang, Wang H, Jin F.   +8 more
europepmc   +1 more source

Up to 16% Optical Carbon‐13 Hyperpolarization of Donor–Acceptor Molecules at 14.1 T

Angewandte Chemie, EarlyView.
Up to 16% 13C nuclear polarization is achieved using a rationally designed photo‐CIDNP polarizing agent (PA) in magic‐angle‐spinning NMR experiments at 14.1 T. The PA was designed using a combination of theoretical photocycle calculations and magnetic field dependent experiments to identify important new design principles.
Marcel Levien, Máté Visegrádi, Ganesan Karthikeyan, Gilles Casano, Christian Reiter, Sebastian Wegner, Armin Purea, Michael R. Wasielewski, Federico De Biasi, Olivier Ouari, Lyndon Emsley   +10 more
wiley   +2 more sources

Cobalt‐Catalyzed [2σ+2π] Cycloaddition via Site‐Selective Capture of Bicyclobutane Diradical

Angewandte Chemie, EarlyView.
We report a Co(II)‐catalyzed strategy that combines thermal activation of bicyclo[1.1.0]butane (BCBs) with site‐selective radical capture to furnish head‐to‐head fused bicyclo[2.1.1]hexanes via [2σ+2π] cycloaddition with indoles. Detailed mechanistic studies (31P NMR, EPR, CV, and DFT) support the catalytic pathway, while phosphine‐oxide trapping and X‐
Tanmayee Nanda, Alexander Umanzor, Julia Gartzke, Jeremy T. Maddigan‐Wyatt, Philipp Thielert, Stefan Weber, Sabine Richert, Shuming Chen, Daniel B. Werz   +8 more
wiley   +2 more sources

Natural Sunlight IR‐Driven Highly Efficient Synthesis of Acetaldehyde From Bioethanol Over Cu/Fe2O3

Angewandte Chemie, EarlyView.
This work reports a Cu/Fe2O3 catalyst for the conversion of bioethanol into valuable acetaldehyde and green hydrogen under both infrared (IR) light and natural sunlight. This IR‐driven system sets a new performance benchmark, with TON and initial TOF enhanced by at least one order of magnitude, enabled by a constructed IR photon‐to‐phonon channel and ...
Xiyi Li, Jiangting Zhao, Junjun Guo, Ze‐Kai Yu, Enqi Chen, Qiong Liu, Tieou Wang, Asterios Gavriilidis, Xue‐Qing Gong, Yang Lan, Junwang Tang   +10 more
wiley   +2 more sources

Fluorene‐Framework Engineering Enables Narrowband Red Multi‐Resonance Emitters for High‐Efficiency With Negligible Roll‐Off Toward BT.2020

Angewandte Chemie, EarlyView.
σ‐Decoupled C9 fluorene‐framework topology control enables narrowband red MR emitters. SF‐BNO and PF‐BNO share the same BNO core, but differ in closed/open fluorene ring closure. SF‐BNO improves steric shielding and stability, while PF‐BNO enhances PLQY, orientation, and efficiency. Ex‐PSF and TE‐OLED architectures deliver ultra‐low efficiency roll‐off
Aradhya Rajput, Nisha Vergineya S, Subramanian Muruganantham, Meghana Tirupati, Odugu Pavan Kumar, Jun‐Yun Kim, Mi Young Chae, Jang Hyuk Kwon   +7 more
wiley   +2 more sources

Ultrasonic-Assisted Stewing Enhances Chicken Soup Flavor by Promoting Flavor Precursor Release and Key Aroma Compound Formation. [PDF]

Foods
Zhang D, Yue Z, Chen R, Guo H, Guo W, Feng C, Zhu Y.   +6 more
europepmc   +1 more source

Glutaredoxins Rapidly Reduce Glutathione Hydroper‐ and Polysulfides

Angewandte Chemie International Edition, EarlyView.
Glutaredoxins (Grx) rapidly reduce glutathione polysulfides (GSSnSG) to glutathione hydroper/polysulfides (GSSnH) or GSSnH to hydrogen (poly)sulfides (H2Sn). Reduction of glutathionylated glutaredoxins by reduced glutathione (GSH) yields glutathione disulfide (GSSG).
Philipp Reinert, Seiryo Ogata, Laura Leiskau, Sernur Sena Yildiz, Takaaki Akaike, Uladzimir Barayeu, Marcel Deponte   +6 more
wiley   +1 more source