Results 121 to 130 of about 60,682 (387)

Butterfly‐Shaped Guest Molecules Enable Tunable Room‐Temperature Phosphorescence in Host‐Guest Doped Systems

open access: yesAdvanced Science, EarlyView.
Butterfly‐shaped triphenylamine‐based guest molecules (DBDBD) doped into rigid host matrices (TPP, CA) achieve efficient, multicolor‐tunable room‐temperature phosphorescence (RTP). The host‐guest synergy enables ultralong afterglow (up to 4 s) and quantum yields (Φp = 3.42%), with applications in dynamic anti‐counterfeiting and information encryption ...
Zongyong Lou   +5 more
wiley   +1 more source

Synthesis of Alkyl Aryl Sulfones via Reaction of N-Arylsulfonyl Hydroxyamines with Electron-Deficient Alkenes

open access: yesMolecules, 2016
Alkyl aryl sulfones were prepared in high yields via the reaction of N-arylsulfonyl hydroxylamines with electron-deficient alkenes. These reactions have the advantages of simplicity, easily available starting materials and mild reaction conditions.
Yunhui Bin, Ruimao Hua
doaj   +1 more source

Customizable Manufacturing of Polyamide Membranes with Programmable Layers and High Permselectivity by Electrospray Printer

open access: yesAdvanced Science, EarlyView.
A customizable manufacturing approach is established for polyamide (PA) membrane with an original programmable electrospray 3D printer, coupled polymerization method and a numerical prediction model. The printed PA layers has ultrathin thickness, programmable crosslinking degree, and smooth surface.
Xieyang Xu   +10 more
wiley   +1 more source

Cupin‐Type Dimethylsulfoniopropionate Lyase from Pelagibacter ubique (DddKPu) Catalyzes Aza‐Michael Addition of Primary and Secondary Amines to Acrylic Acid

open access: yesAngewandte Chemie, EarlyView.
A dimethylsulfoniopropionate lyase (DddK) was identified as an efficient aza‐Michaelase for the addition of amines to acrylate. Screening 74 amines with wild‐type DddK and its W26G variant yielded N‐substituted and N,N‐disubstituted β‐amino acids in 30%–93% isolated yield.
Diletta Arceri   +5 more
wiley   +2 more sources

Synthesis of New 10-Arylthioanthralins and Oxidation of Thioanthralins to Their Corresponding Sulfones [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 1996
Treatment of 10-bromoanthralin (1) with several thiophenols (2) gave the corresponding 10-arylthioanthralins (3) in high yields. Oxidation of thioanthralins (3a-c) and (3k-m) using an excess of m-chloroperbenzoic acid gave the corresponding sulfones (4a ...
Jabbar Khalafy, John Malcolm Pruce
doaj  

Copper-Catalyzed Regioselective Synthesis of (E)-β-Fluorovinyl Sulfones

open access: yesMolecules, 2019
Organofluorine compounds are finding increasing application in a variety of fields such as pharmaceutical, agrochemical, and material sciences. However, given the scarcity of fluorine-containing natural products, advancement in this area depends almost ...
Raquel Román   +4 more
doaj   +1 more source

Enantiomeric oxidation of organic sulfides by the filamentous fungi Botrytis cinerea, Eutypa lata and Trichoderma viride [PDF]

open access: yes, 2007
The biotransformations of a series of substituted sulfides were carried out with the filamentous fungi Botrytis cinerea, Eutypa lata and Trichoderma viride.
Annunziata   +28 more
core   +2 more sources

Freestanding CuBTC‐Doped Fluorine‐Containing Flexible Membrane with Ultrafast Oil‐Water Separation via Enhanced Electrostatic Repulsion Force

open access: yesAdvanced Science, EarlyView.
A new type of CuBTC‐Doped Fluorene‐Containing Flexible Membrane (CuBTCFFM) was rapidly prepared by high internal phase emulsion template method and ultraviolet polymerization process, which has excellent oil‐water separation efficiency and high permeate flux.
Xiaoshuang Li   +7 more
wiley   +1 more source

Control of Tetrazine Bioorthogonal Reactivity by Rotaxanation

open access: yesAngewandte Chemie, EarlyView.
Control of tetrazine‐mediated inverse electron demand Diels–Alder (IEDDA) reaction has been achieved by rotaxanation. Tetrazine rotaxanes were synthesized in high yield and they displayed a much slower kinetics compared to the corresponding thread. Mechanical bond disassembly upon the right stimulus activates reactivity.
Carlos Fumero‐Medina   +10 more
wiley   +2 more sources

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