Results 101 to 110 of about 67,257 (300)
Precision Lignocellulosic Biorefinery: Process Regulation From Corn Stover to Products
Advanced Science, EarlyView.This study presents a precision biorefinery framework that transforms corn stover into high‐value bioproducts through whole‐process regulation. Mechanical fractionation separates feedstock into parenchyma‐rich short fibers and vascular‐bundle‐dominant long fibers.
Xue‐Cheng Lin +4 more
wiley +1 more source
Synthesis, properties and colour assessment of some new 5-(3- and 4-substituted phenylazo)-4,6-dimethyl-3-cyano-2-pyridones [PDF]
Journal of the Serbian Chemical Society, 2006 A series of 5-(3- and 4-substituted phenylazo)-4,6-dimethyl-3-cyano-2-pyridones were synthesized, starting from acetylacetone and arenediazonium salt, followed by condensation with cyanoacetamide using a modified literature procedure.
DUSAN MIJIN +5 more
doaj
Chemistry Central Journal, 2012 Background A series of some novel arylazo pyridone dyes was synthesized from the corresponding diazonium salt and 6-hydroxy-4-phenyl-3-cyano-2-pyridone using a classical reaction for the synthesis of the azo compounds.
Alimmari Adel +7 more
doaj +1 more source
A new look at the substituent effect
, 2017 Classical view on the substituent effect (SE) is associated with an empiric approach presented 80-years ago by Hammett [1]. He proposed a simple formula to represent the effect of a substituent upon the rate or equilibrium constants of a reaction in ...
Krygowski, T. M., Szatyłowicz, H.
core
Localizable Fluorescent Metal Ion Indicators With Tunable Colors
Advanced Science, EarlyView.A modular platform enables the generation of fluorescent metal ion indicators with tunable emission colors and precise subcellular localization. Conjugation to self‐labeling proteins yields bright, color‐tunable potassium probes that permit wash‐free live‐cell imaging, revealing dynamic potassium efflux in stimulated neurons.
Ming‐Ming Wang +3 more
wiley +1 more source
DFT Based Quantum Chemical Descriptors of 1-Substituted THβC, DHβC, βC Derivatives
Cumhuriyet Science Journal, 2017 This research hasfocused on the chemical reactivity behavior of N-1 substituted βCCM derivativeswhich are isolated from natural or synthetically sources.
Goncagul Serdaroglu, Mustafa Elık
doaj +1 more source
Effect of substituent and solvent on the structure and spectral properties of maleimide derivatives
, 2011 The maximum absorption wavelength View the MathML source, emission wavelength (λem) and the related oscillator strength (f) of the maleimides in the ground and first excited states were calculated by using the DFT, CIS and the time-dependent density ...
王伯昌
core +1 more source
Electrochemical Modulation of Laser‐Induced Covalent Functionalization of Graphene
Advanced Science, EarlyView.Photoelectrochemical functionalization of graphene introduces the electrochemical potential as an additional parameter for the laser‐induced covalent modification of graphene. Tuning of the potential allows for amplification or suppression of the functionalization reaction with constant laser parameters, which enables in situ Raman analysis of ...
Tamara Nagel +7 more
wiley +1 more source
Comparison of Various Theoretical Measures of Aromaticity within Monosubstituted Benzene
MoleculesThe effects of monosubstitution on the aromaticity of benzene are assessed using a number of different quantitative schemes. The ability of the mobile π-electrons to respond to an external magnetic field is evaluated using several variants of the NICS ...
Caleb K. Swain, Steve Scheiner
doaj +1 more source
On relation between substituent effect and aromaticity in monocyclic systems
, 2019 Aromaticity/aromatic and substituent/substituent effects belong to the most commonly used terms in organic chemistry and related fields. They are used for more than a century, and so far are the subject of thousands publications a year.
Krygowski, Tadeusz Marek +1 more
core