138433-01-9

Upstream product

• 138432-99-2 3,4,5-tris(hexadecyloxy)benzoesaeure-ethylester 
• 1228276-92-3 C₅₈H₁₀₈O₅ 
• 121-79-9 Propyl gallate 
• 149-91-7 3,4,5-trihydroxybenzoic acid 
• 112-82-3 hexadecanyl bromide 
• 831-61-8 Ethyl gallate 
• 99-24-1 methyl galloate 

Downstream Products

• 956761-46-9 3,4,5-trihexadecyloxybenzyl bromide 
• 1372712-94-1 C₆₄H₁₁₀N₂O₄ 
• 1372713-10-4 Br^(1-)*C₆₆H₁₁₅N₂O₄⁽¹⁺⁾ 
• 1372713-11-5 Br^(1-)*C₆₇H₁₁₇N₂O₄⁽¹⁺⁾ 
• 1372713-12-6 Br^(1-)*C₆₈H₁₁₉N₂O₄⁽¹⁺⁾ 
• 1372713-13-7 Br^(1-)*C₆₉H₁₂₁N₂O₄⁽¹⁺⁾ 
• 1431946-60-9 C₇₃H₁₂₁Br₂NO₄ 
• 1431946-59-6 C₆₁H₁₁₅BrO₄ 
• 138433-05-3 (E)-3,4,5-tris(hexadecyloxy)-N-phenylbenzaldimin 

Relevant academic research and scientific papers

Synthesis and self-assembly of aroylhydrazone based polycatenars: A structure-property correlation

Two series of aroylhydrazone based polycatenars which differ from each other in terms of the linking groups (semi flexible ester or flexible ether linkage) were synthesized. These hexacatenars were mesogenic and also showed gelation in organic solvents at

Effect of the linkages on the self-assembly and photophysical properties of 4,7-diphenyl-2,1,3-benzothiadiazole-based luminescent polycatenars

Three series of 4,7-diphenyl-2,1,3-benzothiadiazole (DBTD)based polycatenars containing a central 4,7-diphenyl-2,1,3-benzothiadiazole moiety connected to 3,4,5-trialkoxyl benzene units at both ends through ether (-OCH2-), ester (-OOC-)or amide (-HNCO-)linkages were synthesized via Suzuki coupling reaction as key step. The polarities of the linkages had great effect on their self-assembly and photophycial properties. Both ether and amide compounds were mesogens, while the ester compounds were non-mesogens. The ether compounds displayed Colhex/p6mm phases, while the amide compound displayed two kinds of columnar phases i.e. columnar rectangular phase with p2mm and columnar hexagonal phase with p6mm lattices depending on temperature. The column phases could be aligned in electric field or under mechanical shearing. The ether and amide compounds showed the significant red-shifted maximum absorption and emission. In the solid and gel states, both ether and amide compounds were yellow luminescence, while ester compounds were green luminescence.

Wide-Range Columnar and Lamellar Photoluminescent Liquid-Crystalline Lanthanide Complexes with Mesogenic 4-Pyridone Derivatives

A series of liquid crystals with various lanthanide ions (EuIII, SmIII, and TbIII) was designed and prepared starting from the corresponding lanthanide nitrates and N-alkylated 4-pyridone derivatives bearing mesogenic 3,4,

s-Triazine-Based Functional Discotic Liquid Crystals: Synthesis, Mesomorphism and Photoluminescence

A new series of C3-symmetric, π-conjugated molecules was designed, synthesized and characterized. The materials were derived from electron-accepting s-triazine, appended covalently to electron-donating styrylbenzene arms, and were readily prepared in excellent yield with high purity by means of three-fold condensation of triphosphonate with n-alkoxybenzaldehydes under Horner–Wadsworth–Emmons reaction conditions. Examination of the phase transitional properties by several complementary techniques evidenced self-assembly into a hexagonal columnar phase, occurring over wide and reasonable thermal ranges. The photophysical properties were studied both in solution and in the fluid/frozen columnar states by UV/Vis absorption and photoluminescence spectroscopy. The emission spectra obtained as a function of the temperature rule out the breaking-up of larger columns and a non-radiative, thermally activated process. A study carried out on thin films of the glassy columnar state, which accounts for conserved fluorescence, defect-free orientation, and freezing ionic species, with the help of atomic force microscopy (AFM) images, suggested a homogeneous granular morphology comprising fibrillar structures. Dissimilarities in the surface morphology and birefringence of thin films of the solid and frozen columnar states were clearly shown by Raman spectroscopy. An electrochemical investigation revealed a LUMO energy of ?4.0 eV. Thus, the discotic motifs presented herein meet certain criteria of organic materials, which are essential for developing electronic devices.

Photoluminescent discotic liquid crystals derived from tris(N-salicylideneaniline) and stilbene conjugates: Structure-property correlations

Luminescent discotic liquid crystals based on tris(N-salicylideneaniline)s [TSANs] bearing trans-stilbene fluorophores have been synthesized. Their mesomorphic and photophysical properties were studied. These TSANs existing in the form of C3h and Cs geometrical isomers of the keto-enamine tautomer self-assemble to form the columnar phase and exhibit fluorescence both in solution and mesophase states. These columnar mesophases also exhibit frozen (glassy) columnar phase, which ensures preserved fluorescence intensity, defect free alignment and simultaneous restriction on the motion of ionic impurities. These features make them promising candidates for the use in organic light emitting diodes, particularly as emissive layers. This study also led to an understanding about the dependence of their mesomorphism (mesophase type, stability and thermal range) and photophysical features on the number and pattern of their peripheral substitution, in comparison to the analogous columnar liquid crystalline TSANs reported earlier.

Synthesis and characterization of room temperature columnar mesogens of cyclotriphosphazene with Schiff base units

New supermolecular liquid crystals have been synthesized by attaching polycatenar aromatic units with three terminal alkyl chains through imine linking groups to a central cyclotriphosphazene ring, and these were investigated by polarizing microscopy, DSC

Supramolecular interactions of high molecular weight poly(2,7-carbazole)s with single-walled carbon nanotubes

A novel 2,7-carbazole monomer unit was synthesized and used to prepare two poly(2,7-carbazole)s, both of which were obtained in relatively high molecular weight and display excellent solubility in common organic solvents. The polymers were able to effectively disperse carbon nanotube bundles in both THF and toluene using a relatively simple procedure to yield concentrated polymer-carbon nanotube samples that were stable for months. The polymer-coated carbon nanotube samples were characterized by thermogravimetric analysis, atomic force microscopy, absorption spectroscopy, photoluminescence mapping, and Raman spectroscopy. It was found that the polymers used in this study preferentially interact with carbon nanotubes having diameters of 1.15 nm or less. Additionally, it was observed that the carbon nanotubes remained effectively debundled by the polymers after removal of solvent, as was demonstrated by Raman and photoluminescence mapping of solid films of the polymer-carbon nanotube composites.

Liquid crystalline 2-thienyl-4,6-diamino-1,3,5-triazines exhibiting Im3m and Pm3n micellar cubic phases in an inverted sequence

Two micellar cubic phases with different structures were observed for the first time in the order Im3m-Pm3n in a thermotropic phase sequence of 4,6-diaminotriazine terminated rod-like liquid crystals upon increasing alkyl chain length or rising temperatur

Viologen-based redox-active ionic liquid crystals forming columnar phases

Viologens possessing three alkoxy chains at each terminal self-organize into columnar liquid-crystalline phases through nanophase segregation and electrostatic interactions. These viologens are redox-active and susceptible to two consecutive electrochemic

4,4'-Distyrylazobenzene as Mesogen

From 3,4-dihydroxybenzaldehyde (1) the tetraalkoxy-substituted 4,4'-distyrylazobenzenes (E,E,E)-5a-c are synthesized.A similar reaction sequence leads from ethyl 3,4,5-trihydroxybenzoate (6) to the hexaalkoxy-substituted 4,4'-distyrylazobenzenes (E,E,E)-1