Results 91 to 100 of about 2,950,856 (378)

Covalent Organic Frameworks for Photocatalysis

Advanced Materials, EarlyView.
This review provides an overview of recent advances in covalent organic frameworks (COFs) for photocatalysis, focusing on sustainable energy applications like water splitting, hydrogen peroxide generation, and CO2 and N2 reduction. It discusses design principles, structure‐function relationships, challenges in COF photocatalysis, and strategies to ...
Bikash Mishra, Akhtar Alam, Avanti Chakraborty, Bidhan Kumbhakar, Samrat Ghosh, Pradip Pachfule, Arne Thomas   +6 more
wiley   +1 more source

Cooperative Photometallobiocatalysis: Nonheme Fe Enzyme‐Catalyzed Enantioconvergent Radical Decarboxylative Azidation, Thiocyanation, and Isocyanation of Redox‐Active Esters

Angewandte Chemie, EarlyView.
Through the directed evolution of an underexploited nonheme Fe extradiol dioxygenase, we developed a unified cooperative photobiocatalytic strategy to allow for three types of enantioconvergent radical transformations, including azidation, thiocyanation, and isocyanation.
Liu‐Peng Zhao, Ken Lin, Pei‐Pei Xie, Huichong Liu, Hengye Xiang, Xin Liu, Yunlong Zhao, Peng Liu, Yang Yang   +8 more
wiley   +2 more sources

Advancements in Understanding the Physicochemical Properties of Reticular Materials: An In Situ and Operando Spectroscopic Perspective

Advanced Materials, EarlyView.
This review explores how in situ and operando spectroscopic techniques reveal the real‐time behavior of reticular materials, including MOFs and COFs. These methods track material formation and functionalization, structural changes, defect formation, dynamic responses to external triggers, and catalytic processes.
Bettina Baumgartner, Anna Wach, Xinwei Ye, Evelyn Ploetz, Bert M. Weckhuysen   +4 more
wiley   +1 more source

Organophotoredox‐Catalyzed Postfunctionalization of Poly(methacrylate) Derivatives via Radical–Polar Crossover Phosphonylation

Angewandte Chemie, EarlyView.
The organophotoredox‐catalyzed postfunctionalization of polymers with a redox‐active moiety using trialkyl phosphite nucleophiles afforded the corresponding phosphonate‐containing polymers via the radical–polar crossover process, in which a carbocation equivalent is generated to react with nucleophiles.
Tomohiro Tamano, Kosuke Sato, Hirohisa Ohmiya, Shinsuke Inagi   +3 more
wiley   +2 more sources

Branched chain aldehydes: production and breakdown pathways and relevance for flavour in foods [PDF]

, 2009
Branched aldehydes, such as 2-methyl propanal and 2- and 3-methyl butanal, are important flavour compounds in many food products, both fermented and non-fermented (heat-treated) products. The production and degradation of these aldehydes from amino acids
Engels, W.J.M., Smit, B.A., Smit, G.
core   +2 more sources

Halide Perovskite Photocatalysts for Clean Fuel Production and Organic Synthesis: Opportunities and Challenges

Advanced Materials, EarlyView.
This review provides the state‐of‐the‐art overview of halide perovskite‐based photocatalysts for hydrogen production from water and halogen acid solutions, CO2 reduction into value‐added chemicals, and organic chemical transformations. Different types of halide perovskite photocatalysts and their relative efficiencies for hydrogen generation and CO2 ...
Siddharth Singh, Zeinab Hamid, Ramavath Babu, Sergio Gómez‐Graña, Xiaowen Hu, Iain McCulloch, Robert L. Z. Hoye, Vishal Govind Rao, Lakshminarayana Polavarapu   +8 more
wiley   +1 more source

Substrate Preorganization Within Photoactive Pt12L24 Nanospheres for Accelerated Decarboxylation Catalysis at Low Concentrations

Angewandte Chemie, EarlyView.
Substrate preorganization is used to overcome the concentration and lifetime constraints of photoredox catalysis. Pt12L24 nanospheres equipped with guanidinium moieties (LGua) are able to preorganize carboxylic acids and act as photocatalysts for the decarboxylative oxygenation reaction.
Rens Ham, Bettina Baumgartner, Joost N. H. Reek   +2 more
wiley   +2 more sources

Prelog Lecture: Mechanism and Structure of Biosynthetic Enzymes. The Biosynthesis of Vitamin B6

CHIMIA, 2003
On Monday, November 11, 2002, the vice president, Prof. Dr. Gerhard Schmitt, presented the Prelog Medal 2002 to Prof. Dr. David E. Cane, Brown University, Providence, Rhode Island, USA.
David E. Cane
doaj   +1 more source

High resolution cryo-EM and crystallographic snapshots of the actinobacterial two-in-one 2-oxoglutarate dehydrogenase

Nature Communications, 2023
Actinobacteria possess unique ways to regulate the oxoglutarate metabolic node. Contrary to most organisms in which three enzymes compose the 2-oxoglutarate dehydrogenase complex (ODH), actinobacteria rely on a two-in-one protein (OdhA) in which both the
Lu Yang, Tristan Wagner, Ariel Mechaly, Alexandra Boyko, Eduardo M. Bruch, Daniela Megrian, Francesca Gubellini, Pedro M. Alzari, Marco Bellinzoni   +8 more
doaj   +1 more source

Research Progress on Vanillin in Alcoholic Beverages

Shipin gongye ke-ji, 2022
Vanillin is a very important aroma compound in alcoholic beverages. It has been widely concerned because of its pleasant sweet aroma, vanilla aroma and physiological function.
Xinliang MO, Liang YANG, Mingde TENG, Yanxia ZHONG, Fangxiang LI   +4 more
doaj   +1 more source