Category: 74305-48-9

《Effects of molecular length on nematic mixtures – IV: Structure effects on viscosity of ester mixtures》 was published in Liquid Crystals and Ordered Fluids in 1984. These research results belong to Margerum, J. David; Wong, Siu May; Jensen, John E.; Van Ast, Camille. COA of Formula: C23H30O2 The article mentions the following:

The flow viscosity (η) of nematic ester mixtures was studied as a function of average mol. length (L̅), chem. structure, and temperature When L̅ is increased by using longer alkyl end groups, the η of less polar mixtures increases while the η of more polar mixtures changes slightly or even decreases. However, when cybotactic nematic characteristics occur with increased L̅, then η increases sharply. η Was measured for 18 different classes of ester structures used as additives in 4-alkoxyphenyl 4-alkylbenzoate (RO-R’) mixtures as fixed values of L̅ for both additive components and mixtures Approx. class viscosities (ηclass) at 25° were assigned to each of the 18 classes. The η25° of other ester mixtures is estimated by summing ηclass times the mole fraction of that class present in the mixture These ηcalc values are generally within 10% of the actual η25° for multicomponent ester mixtures containing some RO-R’ components. Temperature variations often result in a nonlinear plot for log η vs T-1 of ester mixtures The apparent activation energy between 25 and 40° generally increases strongly with the η of the mixture In addition to this study using 4-n-Pentylphenyl-4-pentylbenzoate, there are many other studies that have used 4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9COA of Formula: C23H30O2) was used in this study.

4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9) belongs to esters.COA of Formula: C23H30O2 They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 1983,Molecular Crystals and Liquid Crystals included an article by Bradshaw, M. J.; Raynes, E. P.. Synthetic Route of C23H30O2. The article was titled 《The bend and splay elastic constants on approaching an injected smectic phase》. The information in the text is summarized as follows:

The splay and bend elastic constants (k11 and k33) of a series of hybrid mixtures exhibiting an injected smectic phase were measured. Large pretransitional increases in k11, k33 and k33/k11 close to the smectic phase were observed Outside this pretransitional region k11 increased and k33 decreased on approaching the injected smectic phase by changing composition or temperature The results were attributed to an enhancement in the smectic-like ordering in agreement with a recent theory. In the experiment, the researchers used 4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9Synthetic Route of C23H30O2)

4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils. They perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market.Synthetic Route of C23H30O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 1983,Molecular Crystals and Liquid Crystals included an article by Osman, Maged A.; Huynh-Ba, T.. Category: esters-buliding-blocks. The article was titled 《Stable liquid crystals with large negative dielectric anisotropy – II》. The information in the text is summarized as follows:

2,3-Dicyano-4-n-pentylphenol was synthesized. The mesomorphic properties of its benzoic and cyclohexane cyclohexane carboxylic acid esters are described. The effect of lateral substituents on the thermodn. stability of the mesophase is discussed. The esters of this phenol are photochem. stable liquid crystals with large neg. Δε. Their clearing points are relatively high but their viscosities are also expected to be relatively high. After reading the article, we found that the author used 4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9Category: esters-buliding-blocks)

4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones.Category: esters-buliding-blocks

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

《Peculiar orientation of nematic liquid crystals on rubbed polyvinylimidazole》 was written by Frunza, S.; Beica, T.; Moldovan, R.; Zgura, J.; Frunza, L.. Recommanded Product: 74305-48-9 And the article was included in Journal of Optoelectronics and Advanced Materials on August 31 ,2005. The article conveys some information:

Alignment properties of rubbed films of polyvinylimidazole were studied by observing with the polarizing microscope the features of the nematic liquid crystal (LC) droplets onto these layers. The observing of the droplets can reveal the direction of easy axis on the alignment substrate not only in the case of LC having the director normal to the LC/air interface but also in the case of the director tangent to this interface, when no disclination line could be seen. Some of the LCs are oriented parallel to the rubbing direction, but the other LCs are perpendicularly oriented. This peculiar behavior is at variance to that found on rubbed layers of poly vinyl alc. The role of the end-groups in the structure of the LCs on the alignment properties is discussed. In addition to this study using 4-n-Pentylphenyl-4-pentylbenzoate, there are many other studies that have used 4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9Recommanded Product: 74305-48-9) was used in this study.

4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones.Recommanded Product: 74305-48-9

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Li, Z.; An, Z.; Zheng, Y.; Feng, K. published an article on January 31 ,1998. The article was titled 《Compatibility study of a multi-component TN liquid crystal mixture and a multi-component cholesteric liquid crystal mixture by DSC》, and you may find the article in Molecular Crystals and Liquid Crystals Science and Technology.Category: esters-buliding-blocks The information in the text is summarized as follows:

The phase transition curves of multi-component TN liquid crystal mixture (TN88-1) and a multi-component cholesteric liquid crystal mixture (Ch88-2) were plotted by a differential scanning calorimeter. The phase transition temperature and phase transition heat were obtained from the DSC curves. The components of TN88-1 are compatible and they can form a stable mixture with CB15 chiral liquid crystal. The components of Ch88-2 are not compatible and Poly (MMA-BMA) can greatly improve their compatibility. The experimental process involved the reaction of 4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9Category: esters-buliding-blocks)

4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9) belongs to esters. They are important in biology, being one of the main classes of lipids and comprising the bulk of animal fats and vegetable oils.Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones.Category: esters-buliding-blocks

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Osman, Maged A. published an article in Zeitschrift fuer Naturforschung, Teil A: Physik, Physikalische Chemie, Kosmophysik. The title of the article was 《Molecular structure and mesomorphic properties of thermotropic liquid crystals. II. Terminal substituents》.Category: esters-buliding-blocks The author mentioned the following in the article:

The effect of terminal polar nonpolar substituents on the thermodn. stability of the mesophase is discussed. Mesomeric and steric effects influence the packing of the mols. and consequently the clearing point. It is necessary to consider the effect of substituents in connection with the nature of the rigid core. The influence of mol. association and conformational equilibrium on the stability of the mesophase is described. Isolated electron densities lead to repulsions between neighboring mols., thus destabilizing the mesophase and the layered structure if present.4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9Category: esters-buliding-blocks) was used in this study.

4-n-Pentylphenyl-4-pentylbenzoate(cas: 74305-48-9) belongs to esters. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. Category: esters-buliding-blocks

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics