(trans,trans)-4-(4-Ethoxy-2,3-difluorophenyl)-4'-pentyl-1,1'-bi(cyclohexane) is a fluorinated bicyclohexane-type liquid crystal material supplied by TCI under catalogue code E1487. The molecule consists of two directly linked cyclohexane rings, carrying a pentyl chain at one end and a phenyl ring bearing an ethoxy group together with two fluorine atoms at the other. This rigid rod-like architecture, locked in the trans,trans configuration, allows the molecules to organise themselves in an ordered manner and to display the mesomorphic phases that underpin the operation of liquid crystal displays.
The characteristics that make this material a preferred choice are the combination of the bicyclohexane framework and the difluoro substituents on the aromatic ring. The bicyclohexane core provides molecular rigidity, chemical stability, and a comparatively low rotational viscosity, so that switching response becomes faster. Placing two fluorine atoms at positions 2 and 3 of the phenyl ring produces a dipole moment perpendicular to the long molecular axis, a substitution pattern generally exploited when designing components with negative dielectric anisotropy. The trans,trans configuration across both cyclohexane rings maintains the linear, extended molecular geometry that favours stable mesophase formation.
In Indonesian laboratories, this material is normally handled in university and institutional research groups working on display technology, electronic materials, and soft matter chemistry. It is typically used at small scale on the laboratory bench, either as a single component under characterisation or as one ingredient in a formulated liquid crystal mixture. Work of this kind is usually supported by polarising microscopy, thermal analysis, and electro-optical test cells, so the compound is ordered in research quantities rather than in bulk production volumes.
- Liquid crystal display research: the fluorinated bicyclohexane structure delivers the mesomorphic behaviour and switching characteristics that display-oriented research groups need when evaluating candidate materials for cell fabrication.
- Formulation of negative dielectric anisotropy mixtures: the 2,3-difluorophenyl substitution generates a transverse dipole moment, making this compound a building block for mixtures intended for vertically aligned display modes.
- Mesophase characterisation studies: the rigid rod-like trans,trans geometry gives well-defined ordered phases that can be examined by polarising optical microscopy and thermal analysis in materials science laboratories.
- Electro-optical response measurements: the relatively low rotational viscosity conferred by the bicyclohexane core makes this material useful for laboratory studies of switching speed in test cells.
- Structure-property relationship investigations: the defined combination of pentyl chain, ethoxy terminal group, and difluoro substitution lets researchers correlate specific molecular features with observed liquid crystalline properties.
| Brand | TCI, supplied under catalogue code E1487 |
|---|---|
| CAS number | 124728-81-0 |
| Molecular formula | — |
| Purity | — |
| Category | Materials Science > Electronic Materials > Liquid Crystal (LC) Materials |
| Pack sizes | available in research quantities according to the TCI catalogue listing for this item |
| Physical form | — |
| Storage | keep in the closed original container under the conditions stated on the manufacturer label |
- Chemical class: fluorinated bicyclohexane-type liquid crystal, trans,trans configuration
Store the container tightly closed in a cool, dry, and well-ventilated area, protected from direct sunlight, heat sources, and moisture, and follow any specific storage conditions indicated on the manufacturer label and safety data sheet. Keep the material in its original supplier container or in a chemically compatible, clearly labelled vessel that is kept closed when not in use. Handle in a fume hood where appropriate, wearing a laboratory coat, safety glasses, and suitable chemical-resistant gloves. Avoid contact with skin and eyes and avoid the generation of dust or aerosols. Transfer only the quantity required for the work at hand, return the container promptly to its designated storage location, and dispose of residues and contaminated materials in accordance with institutional chemical waste procedures.
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