Results 21 to 30 of about 2,183 (174)

Synthesis, computational study, solvatochromism and biological studies of thiazole-owing hydrazone derivatives

Chimica Techno Acta, 2023
In the present work, we have synthesized thiazole-hydrazone conjugates 5(a–h) and characterized them using various analytical techniques such as UV, IR, NMR, and mass spectrometry.
C. Kiran Yadav, B.P. Nandeshwarappa, K.M. Mussuvir Pasha   +2 more
doaj   +1 more source

Using new solvatochromic parameters to investigate dye–solvent interactions

Australian Journal of Chemistry, 2022
Solvatochromic behaviours of triazine substituted dyes were evaluated using a novel approach derived from the red shift index (RsI) and associated solvation energy (ASE). These parameters were used to describe the solvation trends of the dye–solvent interactions based on their polarity changes. The concept demonstrates the effect of substituent changes
Victor Akpe, Timothy J. Biddle, Christian Madu, Tak H. Kim, Christopher L. Brown, Ian E. Cock   +5 more
openaire   +2 more sources

Synthesis, characterization and solvatochromic behaviour of new water-soluble 8-hydroxy-3,6-disulphonaphthyl azohydroxynaphthalenes

Journal of Taibah University for Science, 2022
A series of five tetracyclic mono azo dyes based on the diazotization of 1-amino-8-hydroxynaphthalene-3,6-disulphonic acid and subsequent coupling with substituted (un)sulphonated naphthalene derivatives have been synthesized.
Olusegun E. Thomas, Olajire A. Adegoke
doaj   +1 more source

Hydration‐Gated Photoinduced Electron Transfer in BODIPY Dyes

Angewandte Chemie, EarlyView.
Hydration switches photoinduced electron transfer (PET) ON in alkoxy‐coordinated BODIPY dyes via specific hydrogen bonding. This gating yields a fluorescence lifetime span of ∼6 ns, enabling fluorescence lifetime imaging microscopy (FLIM) contrast in live cells and organoids. ABSTRACT Fluorescent probes based on photoinduced electron transfer (PET) are
Venkata N. K. Mamillapalli, Irina A. Okkelman, Fatima Akhssas, Greta Sambucari, Angela C. Debruyne, Dinesh Beniwal, Christophe Bucher, Mariangela Di Donato, Ruslan I. Dmitriev, Mikhail A. Filatov   +9 more
wiley   +2 more sources

Solvatochromism of N-aryl-phenylacetamides

Zaštita Materijala, 2016
Amide derivates are biologically active compounds and they are widely used in all spheres of life. Therefore, it is very important to know their physical-chemical properties.
Suzana Lj. Apostolov, Jovana Nikolić, Aleksandar D. Marinković   +2 more
doaj   +1 more source

Kinetic parameters of ionizing power of solvents. The nature of solvation effects in heterolysis of 2-aryl-2-chloroadamantanes

Журнал органічної та фармацевтичної хімії, 2020
Aim. To find out the possibility of using tertiary substrates as benchmarks for determining the kinetic parameters of the ionizing ability of solvents Y. Results and discussion.
Oleksandr I. Vasylkevych, Iryna I. Koshchii, Genryh F. Dvorko   +2 more
doaj   +1 more source

The reactivity of α,β-unsaturated carboxylic acids. Part XVI. The kinetics of the reaction of cycloalkenecarboxylic and cycloalkenylacetic acids with diazodiphenylmethane in various alcohols [PDF]

Journal of the Serbian Chemical Society, 2002
The rate constants for the reaction of diazodiphenylmethane with 1-cyclopentenecarboxylic, 1-cycloheptenecarboxylic, cyclopent-1-enylacetic and cyclohept-1-enylacetic acids were determined in eight alcohols at 30 ºC using the appropriate UV-spectroscopic
Ušćumlić Gordana S., Nikolić Jasmina B., Krstić Vera V.   +2 more
doaj   +1 more source

Solvatochromic and Single Crystal Studies of Two Neutral Triarylmethane Dyes with a Quinone Methide Structure

Molecules, 2015
The crystal structure of two neutral triarylmethane dyes with a p-quinone methide core was determined by X-ray diffraction analysis. The spectroscopic characteristics of both compounds in 23 solvents with different polarities or hydrogen-bonding donor ...
Katherine Chulvi, Ana M. Costero, Luis E. Ochando, Salvador Gil, José-Luis Vivancos, Pablo Gaviña   +5 more
doaj   +1 more source

Mechanochemical Activation of a Bridged‐Exciplex Optical Force Probe

Advanced Science, EarlyView.
A bridged‐exciplex optical force probe is synthesized, switching from solvatochromic charge‐transfer emission in the latent state to intense locally excited emission upon activation. This dual photophysical response with additional changes in quantum yield and fluorescence lifetime enables precise environmental sensing and distinct optical readouts ...
Ronja Schumann, Andreas Bock, Felix Majer, Michael Baumann, Michael Olney‐Fraser, Lev Kazak, Fedor Jelezko, Alexander J. C. Kuehne, Robert Göstl   +8 more
wiley   +1 more source

Investigation of physical and electrochemical behaviour of N-sulfonic acid functionalized cyclic-ammonium based Brӧnsted acidic ionic liquids in molecular solvents

Journal of Ionic Liquids, 2023
Two types of six Brӧnsted acidic ionic liquids of N-SO3H tethered cyclic ammonium cations (five, six and seven membered) with four anions namely [AcO]−, [HSO4]−, [BF4]−, [PF6]− were synthesized to evaluate their physical and electrochemical behavior in ...
Kabita Boruah, Shahnaz Rohman, Ankur K. Guha, Sukanya Das, Ruli Borah   +4 more
doaj   +1 more source