Results 71 to 80 of about 218,279 (284)

Electron Injection from a Carboxylic Anchoring Dye to TiO2 Nanoparticles in Aprotic Solvents [PDF]

open access: yes, 2018
Injection of photoexcited electrons in the para-Ethyl Red dye to TiO2 nanoparticles (Anatase, 40 nm diameter) is characterized by transient absorption on ultrafast time scales.
Fang, Hui   +12 more
core   +1 more source

The effect of aprotic solvents on the adsorption of phenol by alumina

open access: yesJournal of Pharmacy and Pharmacology, 1967
Abstract The isotherms for the adsorption of phenol onto alumina from cyclohexane, benzene, nitrobenzene, ethyl acetate and 1,4-dioxan solutions have been determined at 25°. The change in solvent in the above order causes a successive decrease in the amount of phenol adsorbed at the ‘saturation level’ and possible explanations of the ...
B, Higgins, J H, Richards
openaire   +2 more sources

Scope and limitations of a DMF bio-alternative within Sonogashira cross-coupling and Cacchi-type annulation

open access: yesBeilstein Journal of Organic Chemistry, 2016
Pd-catalysed C–C bond formation is an essential tool within the pharmaceutical and agrochemical industries. Many of these reactions rely heavily on polar aprotic solvents; however, despite their utility, these solvents are incompatible with the drive ...
Kirsty L. Wilson   +5 more
doaj   +1 more source

Solvolytic Reaction Rates of Secondary Aralkyl Chlorides in Dipolar Aprotic Solvents

open access: yes, 1975
Activation parameters, p-values, and .a-βeuterium effects of solvolytic reaction of 1-aryl-1-chloroethanes 2a-c were compared with those of 2-aryl-2-chloropropanes la-c in aprotic solvents.
ASAHI, Momoyo, TAKANE, Uchida
core  

Electrochemical Behavior of N2SO Schiff-Base Co(II) Complexes in Non-Aqueous Media at the Surface of Solid Electrodes

open access: yesInternational Journal of Electrochemical Science, 2009
The electrochemical behavior of three newly synthesized Schiff-base Co(II)-complex with N2SO donor group was investigated. In different non-aqueous media such as acetonitrile (AN) and %50w/w dichlromethane-dimetylsulfoxide (CH2Cl2-DMSO) mixture as ...
Sohrab Ershad   +3 more
doaj   +1 more source

Determination of Enantiomeric Excess in Confined Aprotic Solvent

open access: yesACS Electrochemistry
The validation of the stereochemical purity of synthesized compounds is a requisite for the fine-chemical industry, particularly in the production of enantiopure drug compounds. However, most methodologies employed in the determination of enantiopurity require carefully chosen chiral GC or HPLC columns, increasing associated cost, analysis time, and ...
Emer B. Farrell   +5 more
openaire   +2 more sources

Water clustering modulates activity and enables hydrogenated product formation during carbon monoxide electroreduction in aprotic media [PDF]

open access: yes
Water solvation plays a critical role in a wide range of electrochemical transformations, but its role is often convoluted since it is typically used as both solvent and proton source.
Reginaldo, Gomes   +7 more
core   +1 more source

A cautionary tale of basic azo photoswitching in dichloromethane finally explained

open access: yesCommunications Chemistry
Many studies of azobenzene photoswitches are carried out in polar aprotic solvents as a first principles characterization of thermal isomerization. Among the most convenient polar aprotic solvents are chlorinated hydrocarbons, such as DCM.
Coral Hillel   +4 more
doaj   +1 more source

Thermodynamics of metal ion cryptates and cryptand 222 in dipolar aprotic solvents. [PDF]

open access: yes, 2018
Thermodynamic parameters of transfer of single-ions from water to nitromethane are obtained using the Ph4AsPh4B convention suggested by Parker. Enthalpies of complexing of alkali-metal and silver cations with cryptand 222 in N,N-dimethylformamide ...
Ghousseini, Lily.
core  

Performance Assessment and Lab‐Scale Economic Evaluation of Alkaline Extraction and Comparative Precipitation of Cyanobacterial Proteins

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Algal proteins from cyanobacteria serve as a natural source of biopolymers. The principal challenge manifests as nonoptimization of unit operations in downstream process accounting for higher costs. This study focuses on process assessment of unit‐operations for selecting suitable recovery strategies not only based on yield, but also considers
Neha Goel   +2 more
wiley   +1 more source

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