Results 21 to 30 of about 8,250 (257)

Origin of High Efficiency and Long-Term Stability in Ionic Liquid Perovskite Photovoltaic

open access: yesResearch, 2020
Environment-friendly protic amine carboxylic acid ionic liquids (ILs) as solvents is a significant breakthrough with respect to traditional highly coordinating and toxic solvents in achieving efficient and stable perovskite solar cells (PSCs) with a ...
Lingfeng Chao   +21 more
doaj   +1 more source

Solvent effects on photodegradation of CI Reactive Orange 16 by simulated solar light [PDF]

open access: yesHemijska Industrija, 2008
Organic solvents may appear in wastewaters and other industrial waste streams containing dyes, therefore, their photodegradation catalyzed by TiO2 should be investigated.
Mijin Dušan Ž.   +3 more
doaj   +1 more source

2,5-PRODAN Derivatives as Highly Sensitive Sensors of Low Solvent Acidity

open access: yesMolecules, 2014
Two 5-acyl-2-dimethylaminonaphthalene derivatives, one with a propionyl group and the other with a fused cyclohexanone ring, are investigated as sensors of H-bond-donating ability in protic solvents of low solvent acidity.
Alexandra H. Yoon   +3 more
doaj   +1 more source

Solvatochromism studies on UV spectra of 4,5-disubstituted-1,2,4-triazoline-3-thiones

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2012
The influence of a series of organic solvents on the UV spectra of investigated 1,2,4-triazoles, was studied by implementing solvatochromic theory.
Vesna B. Dimova   +1 more
doaj   +1 more source

Impact of ionic liquid's cation alkyl chain length and reaction time on cellulose nanocrystals preparation

open access: yesCarbohydrate Polymer Technologies and Applications, 2023
Traditional methods to obtain cellulose nanocrystals typically involve mechanical and chemical processes and develop an improved process in terms of efficiency, sustainability, and the quality of CNCs produced are interesting.
Jania Betania Alves da Silva   +9 more
doaj   +1 more source

Influence of Swelling Media on the Crystallinity and Accessibility of Lyocell Fibers: An FTIR and 13C NMR Analysis

open access: yesJournal of Natural Fibers, 2022
Cellulose swelling using different protic, aprotic and alkaline solvents, which are capable of penetrating crystalline parts of cellulose is one of the important methods to enhance the accessibility and, as a result, the reactivity of cellulose in ...
Fereshteh Fadavi   +3 more
doaj   +1 more source

Polarity-Dependent Twisted Intramolecular Charge Transfer in Diethylamino Coumarin Revealed by Ultrafast Spectroscopy

open access: yesChemosensors, 2022
Twisting intramolecular charge transfer (TICT) is a common nonradiative relaxation pathway for a molecule with a flexible substituent, effectively reducing the fluorescence quantum yield (FQY) by swift twisting motions.
Jiawei Liu, Cheng Chen, Chong Fang
doaj   +1 more source

Assisted dipeptide bond formation: glycine as a case study

open access: yesHeliyon, 2021
Peptide bond formation is a crucial chemical process that dominates most biological mechanisms and is claimed to be a governing factor in the origin of life.
Sofiene Achour   +3 more
doaj   +1 more source

Evaluation of solvents’ effect on solubility, intermolecular interaction energies and habit of ascorbic acid crystals

open access: yesJournal of Saudi Chemical Society, 2019
Solubility of active pharmaceutical ingredient (API) in solvents is very important for drug development and manufacturing. Solubility data may provide further information such as thermochemical properties and intermolecular interactions that may lead to ...
S. Hassan   +3 more
doaj   +1 more source

Investigations of the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents. [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
Rate constants for the reaction of diazodiphenylmethane with isomeric pyridine carboxylic acids were determined in chosen protic and aprotic solvents at 30 °C, using the well known UV spectrophotometric method.
ALEKSANDAR D. MARINKOVIC   +3 more
doaj  

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