Results 91 to 100 of about 4,722 (253)

Data‐Guided Photocatalysis: Supervised Machine Learning in Water Splitting and CO2 Conversion

Advanced Intelligent Discovery, EarlyView.
This review highlights recent advances in supervised machine learning (ML) for photocatalysis, emphasizing methods to optimize photocatalyst properties and design materials for solar‐driven water splitting and CO2 reduction. Key applications, challenges, and future directions are discussed, offering a practical framework for integrating ML into the ...
Paul Rossener Regonia, Christian Mark Pelicano   +1 more
wiley   +1 more source

Photochemical Reaction Discovery Enabled by the Dynamic Speciation of Copper Complexes

Angewandte Chemie, EarlyView.
A strategy for accelerated photochemical reaction discovery is reported that harnesses the dynamic speciation of copper complexes, driven by their labile metal–ligand bonds. This platform simplifies reaction screening by combining an earth‐abundant copper(II) salt with commercially available ligands, which reversibly generate multiple catalytic species
Alessio Regni, Siyu Liang, Supreeta Sen, Hailey Hendricks, Xijue Wu, Matthew V. Pecoraro, Jose B. Roque   +6 more
wiley   +2 more sources

Comparison of the environmental impacts of heating systems in Chile by life cycle assessment

Cleaner Environmental Systems
The present study conducts a Life Cycle Assessment (LCA) to evaluate the environmental impacts of heating technologies commonly used in Chile based on six environmental indicators: Climate Change (CC), Human Toxicity (HT), Formation of Particulate Matter
Adrián-Enrique Ortiz-Rojas, Ismaela Magliotto-Quevedo, Leonardo Guerra, Carlos Gaete-Morales, Paula Guerra, Camila Mery-Araya   +5 more
doaj   +1 more source

T‐Shaped Stibenium(III) Cation: Hydrostibination Without Sb─H Bond

Angewandte Chemie, EarlyView.
A cationic, structurally constrained stibenium platform mediates anti‐Markovnikov hydrostibination of alkenes via element–ligand cooperativity (ELC), thereby bypassing the need for weak Sb─H bonds. ABSTRACT The hydrostibination of alkenes represents a largely underdeveloped transformation, owing to the intrinsic lability of the required Sb─H reagents ...
Ekta Nag, Lars Ole Busse, Andreas Albers, Manuel Schmitt, Lutz Greb   +4 more
wiley   +2 more sources

2,3‐Dichloro‐5,6‐Dicyano‐1,4‐Benzoquinone (DDQ)‐Mediated CC Bond Formation: Redox Strategies from Stoichiometric to Catalytic Systems

ChemistryOpen
2,3‐Dichloro‐5,6‐dicyano‐1,4‐benzoquinone (DDQ) has long been recognized as a versatile organic oxidant that mediates diverse transformations through single‐electron transfer, hydride abstraction, and redox cycling.
Dohoon Cha, Sun‐Joon Min
doaj   +1 more source

Studies on the Chemical and Photochemical Oxidation of Bacteriochlorophyll [PDF]

, 1966
A simplified procedure is described for the preparation of crystalline bacteriochlorophyll from R. rubrum. The chemical dehydrogenation of bacteriochlorophyll with quinones is shown to give high yields of 2-desvinyl-2acetyl-chlorophyll a, whereas the photo-oxidation of bacteriochlorophyll results in a mixture of products of which 2-desvinyl-2acetyl ...
Smith, John R Lindsay, Calvin, Melvin
openaire   +3 more sources

Borylcyclopropanes: Synthetic Strategies and Applications

Angewandte Chemie, EarlyView.
Borylcyclopropanes (cyclopropanes bearing a boron substituent) sit at the intersection of two privileged frameworks in synthesis. This review provides the first exhaustive survey of their chemistry, spanning metal–carbene, nucleophilic cyclization, radical, hydroboration, and C─H activation routes, and documenting applications in medicinal chemistry ...
Aiza A. Butt, Joseph M. Ready
wiley   +2 more sources

A Tert‐Alkyl Terephthalate Derivative as a Universal Degradable Unit for Condensation Polymers

Angewandte Chemie, EarlyView.
A sterically bulky dicarboxylic acid core bearing a tertiary alkyl ester enables photocatalytic C─O bond cleavage via generation of a stabilized tertiary alkyl radical. Incorporated into polyarylate, polyurethane, and polyester, this universal trigger facilitates efficient degradation under identical conditions (up to 99% within 2–4 h). Remarkably, the
Yasuyuki Nitta, Ryosuke Nishikuma, Souya Kouda, Masatoshi Ohyama, Meiki Shinoda, Tsuyoshi Taniguchi, Takashi Koike, Takashi Nishikata   +7 more
wiley   +1 more source

CO2 as a Redox Shuttle Enables Photocatalytic Dehydrogenative Decarbonylation of Biomass‐Derived Alcohols to Light Alkanes

Angewandte Chemie, EarlyView.
A heterogeneous photocatalytic system has been developed that enables the dehydrogenative decarbonylation of primary alcohols under visible light using highly dispersed oxidic iron sites supported on aryl‐modified graphitic carbon nitride (Fe@f–gC3N4).
Jun Hu, Wenhao Su, Chaoqin Zeng, Bruno Vinicius Manzolli Rodrigues, Nils Rockstroh, Susanna Monti, Giovanni Barcaro, Piotr Kuśtrowski, Aleksander Jaworski, Jabor Rabeah, Adam Slabon, Shoubhik Das   +11 more
wiley   +2 more sources

Boosting Photocatalytic Overall Water Splitting Activity of Phosphorene Through Five‐Coordinate Passivation Enabled by Carbene Addition

Angewandte Chemie, EarlyView.
We report selective five‐coordinate passivation of phosphorene via P═C double bonds using a facile one‐step photochemical reaction via carbene addition. The ambient stability of functionalized phosphorene has been substantially improved compared to the pristine phosphorene.
He Zhang, Yanbo Li, Junchi Xu, Shengkun Liu, Taotao Wang, Chao Gao, Pingwu Du, Hengxing Ji, Jun Jiang, Guan‐Wu Wang, Yujie Xiong, Jong‐Beom Baek, Shangfeng Yang   +12 more
wiley   +2 more sources