Category: 107713-66-6

《Synthesis and mesomorphic properties of the nematic mesophase benzoxazole derivatives with big twist angle of difluoro-biphenyl unit》 was published in Liquid Crystals in 2019. These research results belong to Weng, Qiang; Duan, Longyan; Chen, Pei; Gao, Aiai; Chen, Xinbing; An, Zhongwei. COA of Formula: C8H8BrFO The article mentions the following:

Here, a series of 2-(2,2′-difluoro-4′-alkoxy-1,1′-biphenyl-4-yl)-5-substituted benzoxazoles I [R = Et, n-Bu, hexyl, etc.; R1 = H, Me, NO2] with both non-polar (H, CH3) and polar (NO2) groups (coded as nPF(2)PF(2)Bx) was synthesized and characterized. All of the compounds showed a conspicuous inter-ring twist angle of 38° compared with corresponding reference compounds which were calculated by d. functional theory method, and it was interesting to note that the final compounds I showed only nematic mesophase during heating or cooling. Meanwhile, the UV-vis absorption bands and photoluminescence emission peaks both displayed remarkable blue-shifted. The aforementioned results revealed that lateral difluoro substituents played a key role to stable the nematic mesophase by increasing the dihedral angle of biphenyl. In the part of experimental materials, we found many familiar compounds, such as 1-Bromo-4-ethoxy-2-fluorobenzene(cas: 107713-66-6COA of Formula: C8H8BrFO)

1-Bromo-4-ethoxy-2-fluorobenzene(cas: 107713-66-6) belongs to organobromine compounds.Organobromine chemicals are produced naturally by an array of biological and other chemical processes in our environment. Organobromine compounds are produced naturally by marine creatures (sponges, corals, sea slugs, tunicates, sea fans) and seaweed, plants, fungi, lichen, algae, bacteria, microbes, and some mammals. COA of Formula: C8H8BrFO

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Biphenylyl-1,2,4-oxadiazole based liquid crystals – synthesis, mesomorphism, effect of lateral monofluorination》 were Fouad, Farid S.; Ness, Todd; Wang, Kunlun; Ruth, Christopher E.; Britton, Sonia; Twieg, Robert J.. And the article was published in Liquid Crystals in 2019. Safety of 1-Bromo-4-ethoxy-2-fluorobenzene The author mentioned the following in the article:

Aiming at developing a new type of materials for functional applications, three series of new compounds were prepared, 3-(biphenylyl)-1,2,4-oxadiazoles, Series I; laterally mono-fluorinated 3-(biphenylyl)-1,2,4-oxadiazoles, Series II; and 5-(biphenylyl)-1,2,4-oxadiazoles, Series III. Liquid crystalline properties of these compounds were studied using differential scanning calorimetry and polarizing optical microscopy. Ten of the thirteen compounds in Series I are mesogenic forming either N or SmA phases depending on the length-to-width mol. ratio. Mesogens of the positional isomers, Series III are both N and SmA. Monofluorination of the biphenylyl group at either the central or the terminal phenylene rings, Series III, resulted in the formation of nematic mesogens with low phase transition temperatures and broad nematic phase range. In the experiment, the researchers used many compounds, for example, 1-Bromo-4-ethoxy-2-fluorobenzene(cas: 107713-66-6Safety of 1-Bromo-4-ethoxy-2-fluorobenzene)

1-Bromo-4-ethoxy-2-fluorobenzene(cas: 107713-66-6) belongs to organobromine compounds.The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. Safety of 1-Bromo-4-ethoxy-2-fluorobenzene Dehydrobromination, Grignard reactions, reductive coupling, Wittig reaction, and several nucleophilic substitution reactions are some of the principal reactions which involve organic bromides.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Synthesis and mesomorphic properties of laterally fluorinated alkyl 4”-alkylterphenyl-4-yl carbonate liquid crystals》 was published in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices in 2014. These research results belong to Choluj, Artur; Kula, Przemyslaw; Dabrowski, Roman; Tykarska, Marzena; Jaroszewicz, Leszek. Reference of 1-Bromo-4-ethoxy-2-fluorobenzene The article mentions the following:

Fifteen series of homologues of a variety of mono-, di- and trifluorosubstituted alkyl 4”-alkylterphenyl-4-yl carbonates have been synthesized and their mesomorphic properties have been determined From among 95 prepared compounds, 40 pure nematogens have been found, as well as 55 mesogens with orthogonal and tilted smectic phases in broad temperature ranges. The type and combination of the LC phase strongly depend on the position and number of the fluorine atoms. Phys. properties and correlations between the mol. core fluorosubstitution, the length of the terminal chains and the type and sequence of the liquid crystalline phases, have been determined The compounds are useful for the formulation of nematic mixtures as well as ferroelec. ones. After reading the article, we found that the author used 1-Bromo-4-ethoxy-2-fluorobenzene(cas: 107713-66-6Reference of 1-Bromo-4-ethoxy-2-fluorobenzene)

1-Bromo-4-ethoxy-2-fluorobenzene(cas: 107713-66-6) belongs to organobromine compounds.Most of the natural organobromine compounds are produced by marine organisms , and several brominated metabolites with antibacterial , antitumor , antiviral , and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. Reference of 1-Bromo-4-ethoxy-2-fluorobenzene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary