Results 61 to 70 of about 3,703 (215)

Ortho-Fluorination of azophenols increases the mesophase stability of photoresponsive hydrogen-bonded liquid crystals [PDF]

open access: yes, 2018
Photoresponsive liquid crystals (LCs) whose alignment can be controlled with UV-Visible light are appealing for a range of photonic applications. From the perspective of exploring the interplay between the light response and the self-assembly of the ...
Ahmed Z.   +5 more
core   +1 more source

Dual‐State Photophysical Modulation via Bifurcated Hydrogen Bonding in a U‐Shaped Dipyridophenazine‐Cored Donor‐π‐Acceptor‐π‐Donor Fluorophore

open access: yesChemistry – A European Journal, EarlyView.
A donor–π–acceptor–π–donor (D–π–A–π–D) fluorophore bearing a U‐shaped dipyridophenazine core forms bifurcated hydrogen bonds with neutral donors such as sulfonamides or water. This interaction modulates both ground and excited states, enabling red‐shifted emission and enhanced photoluminescence in solution and solid state.
Kimiya Takei   +7 more
wiley   +1 more source

Hydrogen-bonding synthons in lamotrigine salts: 3,5-diamino-6-(2,3-dichlorophenyl)-1,2,4-triazin-2-ium 2-[(2-carboxyphenyl)disulfanyl]benzoate in its monohydrate and anhydrous forms [PDF]

open access: yes, 2016
Lamotrigine is a drug used in the treatment of epilepsy and related convulsive diseases. The drug in its free form is rather inadequate for pharmacological use due to poor absorption by the patient, which limits its bioavailability.
Baggio, Ricardo Fortunato   +2 more
core   +1 more source

Learning Strategies from Nature's Blueprint to Cyclic Carbonate Synthesis

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
The development of sustainable synthetic methods for cyclic carbonates draws inspiration from nature, focusing on eco‐friendly processes and renewable resources like CO2 and biomass. This review explore various CO2 activation mechanisms, green chemistry principles, and green catalysts.
Erika Saccullo   +4 more
wiley   +1 more source

4-[(E)-(5-tert-Butyl-2-hydroxyphenyl)diazenyl]benzoic acid benzene hemisolvate

open access: yesActa Crystallographica Section E, 2010
The title benzene hemisolvate, C17H18N2O3·0.5C6H6, features an essentially planar (the r.m.s. deviation of the non-H atoms, excluding methyl-C, is 0.071 Å) diazo molecule with an E conformation about the N=N bond, and a half ...
Edward R. T. Tiekink   +2 more
doaj   +1 more source

Designing Heat-Set Gels for Crystallizing APIs at Different Temperatures: A Crystal Engineering Approach

open access: yesChemEngineering, 2022
An organic salt crystallizes through different kinds of charge-assisted hydrogen-bonded networks depending on carboxylic functionality number and the degree of amine.
Pathik Sahoo
doaj   +1 more source

The role of acid in the formation of hydrogen-bonded networks featuring 4,4'-dicarboxy-2,2'-bipyridine (H2dcbp): Synthesis, structural and magnetic characterisation of {[Cu(H2dcbp)Cl2].H2O}2 and [Cu(H2dcbp)(NO3)2(H2O)] [PDF]

open access: yes, 2005
Reported herein are the synthesis, structural and magnetic characterisation of two hydrogen-bonded networks featuring the 4,4?-dicarboxy-2,2?-bipyridine (H2dcbp) ligand: {[Cu(H2dcbp)(Cl)2]·H2O}2 1 and [Cu(H2dcbp)(NO3)2(H2O)] 2.
Aakeroy   +63 more
core   +1 more source

7-Chloro-4-[(E)-(3-chlorobenzylidene)hydrazinyl]-1λ4-quinolinium 3-chlorobenzoate

open access: yesActa Crystallographica Section E, 2009
The title salt, C16H12Cl2N3+·C7H4ClO2−, features a non-planar cation, the dihedral angle between the quinolinium and benzene residues being 18.98 (10)°.
James L. Wardell   +4 more
doaj   +1 more source

Adventures in crystal engineering [PDF]

open access: yes, 2018
Crystals are all around us and are aesthetically pleasing as they arise from the ordered, three-dimensional assembly of chemical species which can be minerals (e.g. salt), macromolecules (e.g. proteins) or smaller chemical species (e.g.
Tiekink, Edward R. T. *
core  

Synthesis and fluorine-mediated interactions in methanol-encapsulated solid state self-assembly of an isatin-thiazoline hybrid

open access: yes, 2015
International audienceAn exciting isatin-thiazoline hybrid molecule 2 having -C=N-N=C- linkage has been synthesized in 88% yield by the reaction of 5-fluoroisatin with N-(4-fluorophenyl)hydrazinecarbothioamide followed by condensation of the resultant ...
Ahmad, Maqbool   +4 more
core   +3 more sources

Home - About - Disclaimer - Privacy