154714-72-4

Upstream product

• 131525-58-1 3,4-didodecyloxybenzoic acid 
• 3943-89-3 Ethyl protocatechuate 
• 143-15-7 1-dodecylbromide 
• 773135-90-3 ethyl 3,4-bis(dodecyloxy)benzoate 
• 199475-99-5 3,4-bis(dodecyloxy)benzoic acid methyl ester 
• 2150-43-8 3,4-dihydroxybenzoic acid methyl ester 

Downstream Products

• 1065112-13-1 3,4-Bis-dodecyloxy-benzoic acid 4-nitro-phenyl ester 
• 1228276-57-0 C₄₀H₆₀N₂O₄ 
• 1333308-11-4 C₃₇H₆₀BrNO₃S 
• 1432042-71-1 N'-(3,4-bis(dodecyloxy)benzoyl)isonicotinohydrazide 
• 1502830-72-9 C₇₇H₁₁₅N₅O₇ 
• 1502830-73-0 C₁₀₁H₁₆₃N₅O₉ 
• 1630946-05-2 C₈₂H₁₁₆N₂O₈S₂ 
• 288844-14-4 2-[3,4-bis(dodecanyloxy)phenyl]-2-oxazoline 

Relevant academic research and scientific papers

Hydrogen-bonding induced melamine-core supramolecular discotic liquid crystals

Recognition of melamine is not only of importance for the food industry but also an interesting scientific research topic. The objective of this work is to screen suitable hydrogen-bonding complementary compounds for the construction of melamine-core supr

Synthesis and liquid crystalline properties of novel fluorinated N-benzoyl thiourea compounds. Effect of perfluoroalkyl chains on the thermal behavior and smectic phases stability

A series of novel N-benzoyl-N’-aryl thiourea derivatives (BTU) bearing different number of alkoxy groups in terminal positions of benzoyl unit and a perfluorooctyl group on the other side have been designed and prepared. Their liquid crystalline properties were investigated by a combination of three techniques: polarizing optical microscopy (POM), differential scanning calorimetry (DSC) and variable-temperature powder X-ray diffraction (XRD). Their thermal stability was studied by thermogravimetric analysis (TG). It was found that only the compounds which have only one alkoxy chain attached to benzoyl unit, 1a and 1b, show calamitic mesomorphic behavior, with smectic A and C phases being displayed. The type and stability of these mesophases are greatly influenced by the alkyl chain length as well as by the presence of perfluorooctyl group. The clearing and the mesophase ranges are significantly increased with the incorporation of perfluoroalkyl chains when compared to non-fluorinated analogues, with almost 40 °C. The attachment of additional alkoxy groups on the benzoyl moiety led to a significant decrease of the clearing points and suppression of the mesogenic character.

Hybrid photoluminescent materials containing a benzobisthiazole core for liquid crystal and gel applications

Tetra- and hexacatenar amide compounds containing a linear centrosymmetric benzobisthiazole core were synthesized with good yields. These compounds were characterized and their structures confirmed by elemental analysis, and FT-IR, Maldi mass and NMR spectroscopy. All compounds exhibited excellent thermal stability up to 330 °C. The tetracatenar series containing a double substitution in the meta positions did not show mesomorphic behaviour, whereas the hexacatenar and tetracatenar series having a double substitution in the meta and para positions showed liquid crystal properties with optical textures typical of columnar mesophases corroborated by POM analysis. The mesomorphic properties were dependent on the length, number and position of alkoxy chains attached at the end of the rigid core. XRD studies of the hexacatenar series showed the hexagonal columnar structure of the mesophases. Photoluminescence properties in solution were observed in the visible region, with good quantum yields. In the solid state, these compounds behave as blue emitters and they are able to change colour with acid or base addition. The hexacatenar benzobisthiazole compound with an alkoxy chain of 14 carbons presented properties of a supergelator in chloroform, leading to the formation of a fluorescent organogel material with fluorescence emission in the blue region.

Molecular engineering of liquid crystalline derivatives of 6-oxoverdazyl

6-Oxoverdazyl, a -delocalized stable radical, is considered a central structural element of paramagnetic self18 organizing materials. The three available positions on the heterocycle can be substituted with wedge-shaped or rod-like groups in combination with a small substituent, which leads to different molecular architectures and diverse organization of the mesophase. Several of these architectures have been realized experimentally and materials exhibiting columnar and calamitic phases have been obtained. Compounds with some other combination of substituents did not exhibit liquid crystalline behavior. The analysis also indicates some new molecular architectures potentially suitable for the formation of liquid crystalline phases. Finally, results on magnetic susceptibility and photovoltaic measurements of the discotic derivatives are discussed. [PRESENTED EQUATION]

Organogels from unsymmetrical π-conjugated 1,3,4-oxadiazole derivatives

In this study, the unsymmetrical π-conjugated gelators, 2-(3,4-bis(alkoxy)phenyl)-5-(pyridine-4-yl)-1,3,4-oxadiazole [4-POXD-Bn (n = 4, 8, 12)], were synthesized and screened for gelation in various solvents. The tendencies of the critical gelation concen

Self-assembly and liquid-crystalline supramolecular organizations of semifluorinated block co-dendritic supermolecules

The synthesis and self-organizing behaviour into liquid-crystalline mesophases of two libraries of segmented block co-dendrimers are described. The overall structure of the dendritic supermolecules consists of two chemically incompatible molecular moietie

Self-assembly of imidazolium-based rodlike ionic liquid crystals: transition from lamellar to micellar organization

By using aryl-amination chemistry, a series of rodlike 1-phenyl1H- imidazole-based liquid crystals (LCs) and related imidazolium-based ionic liquid crystals (ILCs) has been prepared. The number and length of the C-terminal chains (at the noncharged end of the rodlike core) and the length of the N-terminal chain (on the imidazolium unit in the ILCs) were modified and the influence of these structural parameters on the mode of self-assembly in LC phases was investigated by polarizing microscopy, differential scanning calorimetry, and X-ray diffraction. For the single-chain imidazole derivatives nematic phases (N) and bilayer SmA2 phases were found, but upon increasing the number of alkyl chains the LC phases were lost. For the related imidazolium salts LC phases were preserved upon increasing the number and length of the C-terminal chains and in this series it leads to the phase sequence SmA-columnar (Col)-micellar cubic (Cuby1/Pm3n). Elongation of the N-terminal chain gives the reversed sequence. Short Nterminal chains prefer an end-to-end packing of the mesogens in which these chains are separated from the C-terminal chains. Elongation of the N-terminal chain leads to a mixing of N- and C-terminal chains, which is accompanied by complete intercalation of the aromatic cores. In the smectic phases this gives rise to a transition from bilayer (SmA2) to monolayer smectic (SmA) phases. For the columnar and cubic phases the segregated end-to-end packing leads to core-shell aggregates. In this case, elongation of the N-terminal chains distorts core-shell formation and removes Cub1 and Col phases in favor of single-layer SmA phases. Hence, by tailoring the length of the N-terminal chain, a crossover from taper-shaped to polycatenar LC tectons was achieved, which provides a powerful tool for control of self-assembly in ILCs.

A new fullerene C60-didodecyloxy benzene dyad: An evidence for ground state electron transfer

Synthesis, complete spectroscopic characterization and cyclic voltammetric measurements of a new didodecyloxybenzene-C60 dyad is described. The dyad showed distinct ground state intramolecular charge transfer as predicted from molecular orbital

Tailoring thermotropic cubic mesophases: Amphiphilic polyhydroxy derivatives

Novel amphiphilic polyhydroxy compounds [N-(3,4-dialkoxybenzoyl)-1-amino-1-deoxy-D-glucitols (glucamides), N-(3,4-dialkoxybenzoyl)-1-deoxy-1-methylamino-D-glucitols, N-(3,4,5-trialkoxybenzoyl)-1-deoxy-1-methylamino-D-glucitols (N-methylgucamides), 1-benzo

On Some New Series of Biforked Mesogens

Two series of biforked mesogens derived from 3,4- or 3,5-dialkoxybenzoic acids are described.The 3,5-derivatives exhibit only one hexagonal columnar mesophase, but the 3,4-derivatives display an interesting polymorphism such that phases with both columnar