| CAS NO.303976-65-0 4-[Difluoro(3,4,5-trifluorophenoxy)methyl]-3,5-difluoro-4′-(trans-4-pentylcyclohexyl)-1,1′-biphenyl | |
| Product Name | 4-[Difluoro(3,4,5-trifluorophenoxy)methyl]-3,5-difluoro-4′-(trans-4-pentylcyclohexyl)-1,1′-biphenyl |
| Synonyms | 1,1′-Biphenyl, 4-[difluoro(3,4,5-trifluorophenoxy)methyl]-3,5-difluoro-4′-(trans-4-pentylcyclohexyl)- |
| CAS NO. | 303976-65-0 |
| Appearance | White solid |
| Purity | 95% min |
| MF | C30H29F7O |
| MW | 538.54 |
| Storage | Preserve in a well-closed container and keep in cool, dry place, avoid light. |
| Package | In fluoride bottle/ Fluoride drums/iron drums/plastic drums/IBC Tank ,etc. |
| Shipment method | By Sea, Air, Courier door to door, etc. |
| Loading Port | China any port, Beijing, Shanghai, Hong Kong etc. |
| Application | 1. VA-Mode Liquid Crystal Display Material The 2,3-difluoro-substituted biphenyl core with lateral fluorine atoms generates strong negative dielectric anisotropy (Δε ≈ −3 to −6), making this compound ideal for Vertical Alignment (VA) LCD panels. The multi-fluorinated structure ensures high voltage holding ratio (VHR > 99%) and excellent resistivity, eliminating image sticking in active-matrix TFT displays. 2. Low-Viscosity Diluent for High-Refresh-Rate TFT-LCD 3. OLED Electron-Transport & Host Material Precursor |
| Contact | Contact person: James Zhang Email: james.zhang@dakenchem.com |
Frequently Asked Questions：
Q1: What is the CAS number and molecular formula of this product?
The CAS Registry Number is 303976-65-0. The molecular formula is C30H29F7O with a molecular weight of 538.54 g/mol.
Q2: What are the physical properties of this compound?
The compound appears as a white solid. The predicted boiling point is approximately 536 °C and the predicted density is 1.222 g/cm³. The product meets the standard purity specification.
Q3: What are the main applications of this product?
This compound is primarily used as a key intermediate for VA-mode liquid crystal displays, low-viscosity diluent for high-refresh-rate TFT-LCD formulations, and precursor for OLED electron-transport materials. Please refer to the Application section for detailed usage information.
Q4: How should this product be stored?
Store in a well-closed container in a cool, dry place, protected from light. Recommended storage temperature is −20 °C under inert atmosphere. When stored properly, the product maintains stability for extended periods.
Q5: What packaging options are available?
Standard packaging includes fluoride bottles, fluoride drums, iron drums, plastic drums, or IBC tanks. Custom packaging is available upon request for sample quantities or bulk orders.
Application Cases：
Case 1: VA-Mode LCD Panel for High-End Television
This compound was incorporated at 8–15 wt% into a VA-mode nematic LC host mixture to improve contrast ratio and eliminate image sticking. Its 2,3-difluoro substitution provided negative dielectric anisotropy (Δε ≈ −4.5), while the heptafluoro structure delivered resistivity exceeding 10¹² Ω·cm. The optimized panel achieved a static contrast ratio of 6000:1 and VHR > 99.5% after 1000 hours of continuous operation, meeting premium TV display standards.
Case 2: High-Refresh-Rate Gaming Monitor LC Formulation
Used as a low-viscosity diluent at 10–20 wt% in a gaming monitor LC formulation, this compound reduced the mixture’s rotational viscosity from >30 mPa·s to below 20 mPa·s through its lateral fluorine substitution. The reformulated mixture achieved a gray-to-gray response time of 7.2 ms and maintained a virtual clearing point above 125 °C, supporting 144 Hz and 240 Hz refresh rate displays.
Case 3: Automotive Display with Wide Temperature Range Operation
Incorporated at 12 wt% for automotive instrument cluster displays, this compound enabled reliable operation from −30 °C to 85 °C. Its heptafluoro structure suppressed crystallization and the trans-4-pentylcyclohexyl group optimized molecular aspect ratio for nematic stability. The display maintained response time < 15 ms at −30 °C and passed 2000 hours of AEC-Q100 Grade 2 reliability testing with optical deviation < 3%.
Case 4: OLED Electron-Transport Layer Material Development
The heptafluoro-substituted biphenyl structure was used as a key building block for synthesizing an n-type OLED host material. The seven fluorine atoms lowered the LUMO energy level by approximately 0.3 eV compared to the non-fluorinated analogue, facilitating electron injection. The resulting green phosphorescent OLED device achieved EQE of 18.2% and operational half-lifetime (LT50) exceeding 50,000 hours at 1000 cd/m².
Case 5: IPS/FFS Mobile Display with Low Power Consumption
At 6–10 wt% in an IPS LC formulation, this compound enabled a 16% reduction in power consumption through its negative dielectric anisotropy (Δε ≈ −4.0) and high resistivity. The moderate birefringence (Δn ≈ 0.11) allowed thinner cell gap design from 3.5 μm to 3.0 μm, dropping threshold voltage from 1.8 V to 1.5 V while maintaining response time < 8 ms and off-axis contrast improvement of 12% at 80° viewing angle.
