Liquid crystal monomers (LCMS) are extensively used in liquid crystal displays (LCDs), which are reshaping the world by enabling more convenient communication. The need for LCM materials is continually expanding as an increasing number of LCD panels are manufactured around the world. The properties of recently developed polymerizable nematic liquid crystalline materials like LC242 and chiral dopants are well suited to produce ultrathin optical films such as retardation films, color filters, and cholesteric reflecting polarizers for the fabrication of brightness enhancement films.
The basic information of LC242
LC242 CAS NO. 187585-64-4
4-[[[4-[(1-Oxo-2-propenyl)oxy]butoxy]carbonyl]oxy]benzoic acid 2-methyl-1,4-phenylene ester
Molecular Formula: C37H34O14
LC242 is a reactive, polymerizable nematic liquid crystalline monomer featuring acrylate groups on both ends and a carbonyl-based transverse dipole moment. It also serves as a reactive mesogen substance, RM material, and electronic chemical.
What are the applications of LC242?
Without the use of an LC alignment layer, LC242 molecules could be vertically aligned on an oxygen plasma-treated glass surface. The LC242 cell’s light delay increased with the thickness of LC cells. However, its retardation may have a critical limit that is determined by the thickness of the liquid crystals.
If the LC cell thickness is greater than 5 μm or the curing temperature falls within the LC phase temperature range, the vertical alignment of LC242 molecules in the cell cannot be retained after photocuring. Even though these molecules can be easily aligned vertically in the LC phase, it is challenging to keep the LC molecules aligned during the UV-curing reaction. It is hard to prevent LC molecules from moving during the photoreaction in the LC phase because photo-reactive acrylate groups are connected to the terminals of pliable alkyl chains of LC242. After the acrylates react, the LC orientation is disrupted.
Vertically oriented LC films, on the other hand, can be generated by photocuring LC242 at the crystalline phase temperature. Because these molecules recrystallize gradually at temperatures below the liquid crystal to crystal transition temperature while maintaining the order of the LC phase, acrylate groups at the ends of the molecule can react with just nearby molecules without disrupting the LC orientations.
Moreover, LC242 also enables the production of optical films with high quality and extremely low thickness, such as retardation films, brightness enhancement films, and color filters, utilizing coating processes.
The characteristics of LC242
The liquid crystal monomer belongs mostly to the column phase and has the following characteristics:
(1) The molecule has a stick structure with a 4:1 length ratio.
(2) The molecular ends contain polar or polarizable groups, which keep the molecules in an ordered orientation.
(3) The molecule’s long axis is easily bent and has some stiffness.
How to form the LC242
Liquid crystal intermediates and liquid crystal monomers are created by adding several basic chemical raw materials for a wide range of chemical reaction conversions, and they fall under the fine chemical industry in the manufacturing of other specialized chemical products, according to the China petroleum and chemical industry association’s classification standard.
Compounding: A liquid crystal compound capable of expressing birefringence with reverse wavelength distribution, a (meth)acrylic acid ester compound (LC242) other than the liquid crystal compound, and a surfactant containing a fluorine atom in its molecule comprises the liquid crystal composition of the present invention.
A “reverse distribution liquid crystal compound” is a liquid crystal compound that can express birefringence with a reverse wavelength distribution. In addition, a surfactant with a fluorine atom in its molecule is frequently referred to as a “fluorine-based surfactant.”
Our company, Dakenchem, offers the best LC242 monomers that will meet all your needs.
The related chemicals-
4-(3-(acryloyloxy)propoxy)benzoic acid CAS NO.245349-46-6
1.4-((6-(acryloyloxy)hexyl)oxy)benzoic acid CAS NO.83883-26-5
2.6-(4-hydroxyphenoxy)hexyl acrylate CAS NO.161841-12-9
3.(4-hydroxyphenyl)boronic acid CAS NO.71597-85-8
4.3-(4-bromophenyl)propanal CAS NO.80793-25-5
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