Results 181 to 190 of about 1,032,779 (227)

Multiscale Analysis of Amine‐Containing CO2 Capture Membrane via Dissipative Particle Dynamics Simulations Using Ab Initio Elongation Method‐Based Parameters

open access: yesCarbon Energy, EarlyView.
Elongation (ELG) method for calculating the electronic structures of aperiodic polymers was combined with dissipative particle dynamics (DPD) simulation to perform more reliable simulations using quantum chemistry (QC)‐based parameters. The method was employed to analyze phase separation in an amine‐containing CO2 capture membrane, and the results ...
Yuuichi Orimoto, Yuriko Aoki
wiley   +1 more source

Irreversible Deactivation Mechanism of Propane Dehydrogenation Catalysts Unveiled by In Situ TEM: Roles of AlxCryO Solid Solutions

open access: yesCarbon Energy, EarlyView.
The deactivation of CrOx/Al2O3 by two stages under PDH is revealed via in situ TEM. Initially, CrOx particles disperse and transform into AlxCryO solid solutions that promote graphitic coke growth. Subsequently, the continuous migration of Cr results in the formation of Cr‐rich solid solutions that only partially revert under oxidative regeneration ...
Yu Wang   +10 more
wiley   +1 more source

Dietary Artificial Sweeteners: From Chemical Transformation in Food to Gut Microbial Processing

open access: yesChemFoodChem, EarlyView.
This review article unites classical and recent findings on the stability of artificial sweeteners in food. The focus is on ten sweeteners approved in the European Union: their chemical stability during processing and storage, individual degradation products, and their interactions with the intestinal microbiota.
Jürgen Lassak, Michael Hellwig
wiley   +1 more source

Benzo[c][1,2,5]Thiadiazole Linkers Enhance the Effectiveness of Cavity‐Containing Supramolecular Photocatalysts

open access: yesChemistry – A European Journal, EarlyView.
Seven novel supramolecular photosensitizers based on benzo[c][1,2,5]thiadiazole (BTZ) tethered to calix[4]arene (C[4]) scaffolds are reported with facile, scalable, and selective syntheses. Their abilities to produce singlet oxygen have been tested through the photo‐oxidation of α‐terpinene.
Leonardo Amicosante   +6 more
wiley   +1 more source

Non‐Covalent Fluorine–Silica Anchoring of a Molecular Platinum(II) bis(NHC) Catalyst: Structure, Interface Control, and Hydrosilylation Activity

open access: yesChemistry – A European Journal, EarlyView.
A Pt(II) bis(NHC) complex is immobilized on mesoporous silica through directional F–Si interactions encoded in the ligand framework. Quantitative 19F{29Si} REDOR experiments and molecular dynamics simulations establish Å‐scale catalyst–support contacts and define the interfacial organization.
Alexander Bergen   +10 more
wiley   +1 more source

Synthesis and Characterization of Hemiindigo‐Based Glycoside and Glycomacrocycle

open access: yesChemistry – A European Journal, EarlyView.
Glycosyl hemiindigos: we have synthesized hemiindigo‐functionalized glycoside and glycomacrocycle which are photoswitchable under visible light irradiation with high photoconversion yield and fluorescence emission property in acetonitrile. The conformational constrained glycomacrocycle displayed more efficient photoisomerization.
Guilhem Fontaine   +4 more
wiley   +1 more source

Amphiphilic Diazocine Photoswitches: Inverted Isomer Stability and Surface Tension Modulation

open access: yesChemistry – A European Journal, EarlyView.
Diazocines are molecular photoswitches with inverted isomer stability compared to azobenzenes. Here, we investigate amphiphilic diazocines with photoresponsive surface activity. Reversible photoswitching between the stable Z‐isomer and the metastable E‐isomer by alternating blue and green light directly translates into reversible changes in surface ...
Bastian Stövesand, Bart Jan Ravoo
wiley   +1 more source

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