1050414-41-9

Upstream product

• 575-38-2 1,7-Dihydroxynaphthalene 
• 619-66-9 4-Carboxybenzaldehyde 

Downstream Products

• 1243696-56-1 C₆₆H₈₀F₂N₂O₆ 
• 1246364-96-4 C₆₆H₈₂N₂O₄S₂ 

Relevant academic research and scientific papers

Switchable columnar phase formed from bent-shaped molecules with low bent-angle naphthalene central core and alkylthio tail

Novel low-angle bent molecules with 1,7-naphthalene central core and alkylthio tails form the hexagonal columnar phase as well as the well-known B4 phase. The columnar phase has a large two-dimensional hexagonal lattice of 65-70 and exhibits the antiferro

Effect of lateral fluorine substituent on mesophase behavior of bent-shaped molecules with asymmetric central naphthalene core

Novel lateral fluorinated bent-shaped molecules based on 1,7- and 1,6-naphthalene central core are prepared. Their mesomorphic properties are discussed in comparison with those of conventional unsubstituted bent-shape molecules.

Two-Dimensional Skyrmion Lattice Formation in a Nematic Liquid Crystal Consisting of Highly Bent Banana Molecules

We synthesized a novel banana-shaped molecule based on a 1,7-naphthalene central core that exhibits a distinct mesomorphism of the nematic-to-nematic phase transition. Both the X-ray profile and direct imaging of atomic force microscopy (AFM) investigations clearly indicates the formation of an anomalous nematic phase possessing a two-dimensional (2D) tetragonal lattice with a large edge (ca. 59 ?) directed perpendicular to the director in the low-temperature nematic phase. One plausible model is proposed by an analogy of skyrmion lattice in which two types of cylinders formed from left- and right-handed twist-bend helices stack into a 2D tetragonal lattice, diminishing the inversion domain wall.

Anti-ferroelectric banana phase in a bent-shaped molecule with a low bend angle of 60°

This paper presents the first example of an antiferroelectric banana phase in a bent molecule with a low bend angle of about 60°. Copyright

Smectic A-hexagonal columnar-B7 phase transition of acute-angle bent-core molecules

Acute-angle bent-shaped molecules comprising a 1,7-naphthalene central core, alkylthio terminal chains and long side wings comprising three phenyl rings connected by imine and ester linkages were synthesised. Their distinct mesomorphic properties and phase structures were revealed. Despite their acute shape, these molecules exhibited a polar switchable hexagonal columnar phase (Colh), banana B7 phases and calamitic smectic A (SmA) phase, enabling the first observation of SmA-Colh-B7 and Colh-B7 phase transition behaviours. The formation of a hexagonal columnar phase between the layered smectic A and B7 phases supports the proposed Colh phase model in which a tube-like assembly incorporating smectic layers generates hexagonal columns. Molecular packing in the optically uniaxial SmA phase was also discussed in terms of birefringence. Overall, the structural transformation of one-dimensional SmA layers into deformed hexagonal columnar and B7 phases was found to depend on the combined effects of molecular asymmetry, alkylthio terminal tails and the balance between flexible chain lengths and rigid mesogenic units.

A hexagonal columnar phase formed in lateral fluorinated bent-shaped molecules based on a 1,7-naphthalene central core

Lateral fluorinated bent-shaped molecules based on a 1,7-naphthalene central core and alkoxy tails can form a switchable hexagonal columnar phase and B4 phase. The columnar phase has a large two-dimensional hexagonal lattice of 65-70 A and exhibits ferroelectric switching with spontaneous polarization along the column axis. The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2012.

Effect of alkylthio tail on phase behaviors of bent-shaped molecules based on naphthalene core

New bent-shaped molecules with naphthalene central core and alkylthio tail are prepared, and their banana phase structures and properties are discussed in comparison with those of conventional alkoxy molecules. Copyright