177424-32-7

Upstream product

• 111-25-1 1-bromo-hexane 
• 99-96-7 4-hydroxy-benzoic acid 
• 154845-72-4 4-hexyloxy-benzoic acid ethyl ester 
• 120-47-8 Ethyl 4-hydroxybenzoate 
• 1142-39-8 para-hexyloxybenzoic acid 
• 39649-71-3 4-hexyloxybenzoyl chloride 
• 95-01-2 2,4-Dihydroxybenzaldehyde 

Downstream Products

• 108544-48-5 N-<4-(4-hexyloxybenzoyloxy)-2-hydroxybenzylidene>-4-butylanilide 
• 132329-15-8 4-Hexyloxy-benzoic acid 4-[(E)-decyliminomethyl]-3-hydroxy-phenyl ester 
• 132329-24-9 4-Hexyloxy-benzoic acid 4-{[(E)-4-decyl-phenylimino]-methyl}-3-hydroxy-phenyl ester 
• 132329-21-6 4-Hexyloxy-benzoic acid 4-{[(E)-4-heptyl-phenylimino]-methyl}-3-hydroxy-phenyl ester 
• 127923-26-6 bis{4-((4-(hexyloxy)benzoyl)oxy)-N-(methyl)salicylaldiminato}copper(II) 
• 130248-34-9 bis{4-((4-(hexyloxy)benzoyl)oxy)-N-(n-butyl)salicylaldiminato}copper(II) 
• 130248-37-2 bis{4-((4-(hexyloxy)benzoyl)oxy)-N-(n-heptyl)salicylaldiminato}copper(II) 
• 130248-38-3 bis{4-((4-(hexyloxy)benzoyl)oxy)-N-(n-octyl)salicylaldiminato}copper(II) 
• 130248-42-9 bis{4-((4-(hexyloxy)benzoyl)oxy)-N-(n-dodecyl)salicylaldiminato}copper(II) 
• 1206187-26-9 N,N'-bis[4-(4-(hexyloxy)benzoyloxy)-2-hydroxybenzylidene]-1,12-diaminododecane 
• 1208940-32-2 C₂₂H₂₄N₄O₄ 

Relevant academic research and scientific papers

The effects of molecular structure and functional group of a rodlike Schiff base mesogen on blue phase stabilization in a chiral system

Two types of racemic rodlike Schiff base mesogens with-C═N-(type I) and-N═C-(type III) linkages were prepared. These mesogens possessed either difluoro substitutions at the inner-core position of the phenyl ring or hydroxy group to form intramolecular hyd

Synthesis, characterization, and mesomorphic investigations of diester-substituted salicylaldimines and their copper (II) complexes

A novel homologous series of N-[4-[4′-n-alkoxy)benzoyloxy-2-hydroxybenzylidene)-4-carbethoxy anilines, H2n+1CnOC6H4C(O)OC6H3(OH)C(H)NC6H4COOC2H5 (n = 6, 8, 10, 12, 14, 16) and their copper(II) complexes have been synthesized. All these compounds have been characterized by suitable spectroscopic techniques. The mesomorphic properties of these compounds were investigated by differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). The ligands exhibit wide range of enantiotropic smectic A and nematic phases as confirmed by their typical optical texture under polarizing microscope. The square planar copper(II) complexes of the ligands show only an isotropic phase at higher temperature and no mesogenic nature is observed. DFT calculations have been performed using GAUSSIAN-03 program at B3LYP level to obtain the stable electronic structure of the ligand with decyloxy chain length and its copper(II) complex.

Effect of the Functional Groups of Racemic Rodlike Schiff Base Mesogens on the Stabilization of Blue Phase in Binary Mixture Systems

Four series of rodlike racemic Schiff base mesogens possessing different alkyl chains and two types of linkages, ester and alkynyl linkages, were synthesized and applied to induce cubic blue phases (BPs) in simple binary mixture systems. The mesophases of these Schiff base mesogens were confirmed by variable-temperature X-ray diffraction and the characteristic texture from polarized optical microscopy (POM). In general, when chiral additive S-(+)-2-octyl 4-(4-hexyloxybenzoyloxy)benzoate (S811; 20-40 wt %) is added into the rodlike racemic salicylaldimine-based mesogens, the cubic BPs could be observed and its temperature range is larger than 20 K. The widest temperature range of the cubic BP (35 K) can be observed in the blending mixture composed of rodlike racemic salicylaldimine-based mesogen OH-TIn possessing alkynyl linkage and 35-40 wt % S811. However, Schiff base mesogens possessing alkynyl linkage show a direct isotropic to chiral nematic transition when equal amount of chiral dopant is added. Notably, the termination temperature of BPs is very close to room temperature (ca. 35 °C) after 40.0 wt % S811 is added into the salicylaldimine-based mesogens possessing terminal alkyl chains and ester linkage. Interestingly, wide BPs (>30 K) can also be induced by adding chiral additive 1,4:3,6-dianhydro-2,5-bis[4-(n-hexyl-1-oxy)benzoic acid]sorbitol (ISO(6OBA)2) with a high helical twisting power into the racemic Schiff base mesogen possessing ester linkage. Cubic BPI and BPII can be confirmed by reflectance spectra and POM. The results of reflectance spectra indicate that the binary mixture composed of salicylaldimine-based mesogens and S811 easily exhibits a supercooling effect and induces BPI. However, only BPII can be observed in all binary mixtures containing Schiff base mesogens. On the basis of our experimental results and molecular modeling, we suppose that the values of biaxiality, polarizability, and the dipole moment of molecular geometry are the main factors that affect BP stabilization.

Synthesis, characterization and mesomorphic investigations of ester-substituted aroylhydrazones possessing a lateral hydroxyl group

The synthesis, characterization and investigation of a new liquid crystalline series of ester containing aroylhydrazones with a lateral hydroxyl group, N-[4-(4′-alkoxy)benzoyloxy-2-hydroxy-benzylidene]-N′- [4″-alkoxybenzoyl]hydrazine (Cm,nLH), with the same or different peripheral alkoxy chains, and some of their nickel(II) and copper(II) complexes are described. All the ligands, except those with no terminal chains on either end of the molecule, exhibit an enantiotropic SmC mesophase, as evidenced by polarizing optical microscopy and differential scanning calorimetric studies. It has been found that addition of a lateral hydroxyl group along with ester-substitution to the aroylhydrazone core increases the mesomorphic as well as thermal stability of the ligands. Also, the coordination of Ni2+ and Cu2+ with the aroylhydraozone core inhibits the mesomorphic potential of the ligands. A temperature dependent Raman study of one of the members, C12,12LH (m = n = 12) has been made to identify phase transitions and to understand the molecular rearrangement as a result of changes in intermolecular interactions at the phase transition. DFT calculations have been performed to obtain the stable electronic structure of the ligand (C6,6LH) and its nickel(II) complex.

Synthesis, mesophase behavior and thermal stability of liquid crystals based on different central linkages with lateral substitution and terminal heterocyclic moieties

The synthesis and evaluation of thermal behavior of two new mesogenic homologous series of liquid crystalline compound containing 1,2,4-triazole and isonicotinic acid ring at the terminus of the molecule have been reported, viz. 3-hydroxy-4-[(4-1,2,4-triazol-4-ylimino)methyl] phenyl 4-alkoxybenzoate (Series-I) and 3-hydroxy-4 (isonicotinoyl carbonohydrazonoyl) phenyl 4-alkoxy benzoate (Series-II). The compounds of both the series have been characterized by elemental Analysis, FT-IR, mass spectrometry, 1H-NMR and 13C-NMR. Phase transition temperatures and the thermal parameters were obtained from differential scanning calarimetry (DSC). The texture observation was performed under polarizing optical microscopy (PMO) attached with Mettler hot stage. All the derivatives are mesomorphic in nature showing nematic phase as well as higher members of both the series show smectic phase. The use of triazole and isonicotinic acid as a terminal group has a very dramatic effect on the melting and clearing points. Similarly lateral-OH substitution on central phenyl ring shows higher clearing temperature due to intermolecular hydrogen bonding. The mesomorphic behavior has been analyzed in terms of structural property relation. Copyright Taylor & Francis Group, LLC.

Copper(II) and nickel(II) complexes of a tetradentate ligand containing an N,N'-bis(salicylidene)dodecane-1, 10-diamine core

The synthesis of mesomorphic Cu(II) and Ni(II) coordination compounds arising from a new series of tetradentate Schiff bases containing two salicylaldimine fragments connected by a very long spacer,-(CH2)12-, (H2Ln): L1=p-(C6H13O)-C6H4COO, L2=p-(C12H25O)-

Coordination induction of nonlinear molecular shape in mesomorphic and luminescent ZnII complexes based on salen-like frameworks

A series of tetradentate dimeric salicylaldimine ligands (H 2LnRm) with terminal chains of variable length (Rm) and a central flexible (CH2)n spacer (Ln = 10 and 12) was synthesi

Synthesis, characterization, and mesomorphic properties of new liquid-crystalline compounds involving ester-azomethine central linkages, lateral substitution, and a thiazole ring

In continuation with our work on liquid crystals with unconventional molecular structures, two homologous series that have 1,4-disubstitution and 1,3,4-trisubstitution in the central phenyl ring, such as 2[(4-n-alkoxy- benzyloxy) phenyl azomethine]-5-methyl thiazole and 2-[(4-n-alkoxy-benzyloxy)-2- hydroxy salicyladimine]-5-methyl thiazole, have been synthesized. They have been characterized by elemental analysis, FT-IR, 1HNMR, 13CNMR, and mass spectrometry. The liquid-crystalline behavior of these compounds was observed by differential scanning calorimetry (DSC) and polarizing microscopy. All the compounds of the 1,4-disubstituted series show an enantiotropic nematic phase only, whereas the compounds of the 1,3,4-trisubstituted series show smectic and nematic phases. Some mesogens with a lateral hydroxy group were also synthesized to evaluate the effect of this group on melting point, transition temperatures, and mesophase morphology.

NEW MESOMORPHIC DERIVATIVES OF 2-HYDROXY-4-BENZOYLOXYBENZENALDEHYDE

Synthesis and mesomorphic properties of 2-hydroxy-4-(4-alkyloxybenzoyloxy)benzylideneamines are presented.

Synthese de cristaux liquides nematiques a squelette rigide organometallique

Copper, nickel and palladium complexes with N-(4-(4'-n-alkoxybenzoyloxy) salicylidene)-4-n-butylaniline and N-(4-(4'-n-hexadecyloxybenzoyloxy) salicylidene)-4-n-alkoxyaniline have been synthesized.The copper and palladium derivatives show mesomorphic properties and exhibit a nematic phase over a large temperature range.In contrast, the nickel derivatives do not show any mesomorphic behavior.The liquid-crystalline-phase transitions were determined using a differential scanning calorimeter and a polarizing microscope.All these physical characteristics are compared and discussed.