[HTML][HTML] Design, synthesis, biological activity evaluation and mechanism of action of myricetin derivatives containing thioether quinazolinone

T Liu, F Peng, Y Zhu, X Cao, Q Wang, F Liu… - Arabian Journal of …, 2022 - Elsevier
Plant bacteria and viruses have a huge negative impact on food crops in the world.
Therefore, it is important to create new and efficient green pesticides. In this paper, a series …

New wide-stability four-ring azo/ester/Schiff base liquid crystals: Synthesis, mesomorphic, photophysical, and DFT approaches

NHS Ahmed, GR Saad, HA Ahmed, M Hagar - RSC advances, 2020 - pubs.rsc.org
New four-groups-based azo/ester/Schiff base liquid crystals,((4-substitutedphenylimino)
methyl) phenyl 4-[2-(4-alkoxyhenyl) diazenyl] benzoate, Ina–d, were synthesized and …

Mesophase behavior and DFT conformational analysis of new symmetrical diester chalcone liquid crystals

M Hagar, HA Ahmed, TH El-Sayed… - Journal of Molecular …, 2019 - Elsevier
Synthesis, geometrical structures, conformational analysis, mesomorphic and optical
characterizations of new angular chalcone liquid crystals, 4-(1, 5-(3-oxopenta-1, 4-dienyl)) …

New two rings Schiff base liquid crystals; ball mill synthesis, mesomorphic, Hammett and DFT studies

SS Nafee, M Hagar, HA Ahmed, OA Alhaddad… - Journal of Molecular …, 2020 - Elsevier
New analogues series of two rings Schiff base comprising different terminal polar
substituents changed between N (CH 3) 2, CH 3 O, H, Cl, F, CN and NO 2 were prepared …

New nitro-laterally substituted azomethine derivatives; Synthesis, mesomorphic and computational characterizations

MA El-Atawy, MM Naoum, SA Al-Zahrani, HA Ahmed - Molecules, 2021 - mdpi.com
Two new homologues series, based on two rings of the azomethine central group bearing
the terminal alkoxy group of various chain lengths, were prepared. The alkoxy chain length …

Schiff base/ester liquid crystals with different lateral substituents: Mesophase behaviour and DFT calculations

HA Ahmed, M Hagar, TH El-Sayed, R B. Alnoman - Liquid Crystals, 2019 - Taylor & Francis
ABSTRACT Four new groups of 4-((2ʹ-substitutedphenylimino) methyl) phenyl-4”-alkoxy
benzoates, I n ad, of Schiff base ester liquid crystals, were prepared and investigated for …

Impact of the proportionation of dialkoxy chain length on the mesophase behaviour of Schiff base/ester liquid crystals; experimental and theoretical study

HA Ahmed, M Hagar, GR Saad - Liquid Crystals, 2019 - Taylor & Francis
New non-symmetrical homologues series of Schiff base/ester series, 4-alkoxyphenylimino-
4ʹ-phenyl-4ʹ'-alkoxybenzoates, have two terminal alkoxy groups (I m/n), were synthesised …

Experimental and theoretical approaches of new nematogenic chair architectures of supramolecular H-bonded liquid crystals

OA Alhaddad, HA Ahmed, M Hagar - Molecules, 2020 - mdpi.com
New four isomeric chair architectures of 1: 1 H-bonded supramolecular complexes were
prepared through intermolecular interactions between 4-(2-(pyridin-4-yl) diazenyl-(2-(or 3-) …

New architectures of supramolecular H-bonded liquid crystal complexes based on dipyridine derivatives

SS Nafee, HA Ahmed, M Hagar - Liquid Crystals, 2020 - Taylor & Francis
New two isomeric homologues series of dipyridine derivative liquid crystalline H-bonded
complexes were formed through 2: 1 intermolecular hydrogen bonding between 4-n …

Experimental and theoretical approaches of molecular geometry and mesophase behaviour relationship of laterally substituted azopyridines

M Hagar, HA Ahmed, OA Alhaddad - Liquid Crystals, 2019 - Taylor & Francis
New 10 laterally chloro azopyridine-based derivatives, with terminal alkoxy chain length
varies between 6 and 16 carbons, were prepared. The mesophase behaviour was …