Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
1. Basic Info
Name: 1,4-Bis(4-cyanostyryl)benzene
Alias: 1,4-Bis(4-cyanovinylphenyl)benzene, OPV Fluorescent Blue Emitter
CAS No.: 13001-40-6
Molecular Formula: C24H16N2
Molecular Weight: 332.40
2. Physical & Chemical Properties
Physical Properties
- Appearance: Bright yellow crystalline powder, emits strong blue fluorescence under UV light
- Odor: Odorless
- Solubility: Soluble in hot chloroform, hot DMF, hot o-xylene, dichlorobenzene; slightly soluble in hot toluene, ethyl acetate; insoluble in water, methanol, aliphatic alkanes
- Melting Point: 286–290 °C (decomposes slightly above melting point)
- Density (25℃): 1.18 g/cm3
- Optical performance: Strong blue fluorescence; maximum absorption ~370 nm, emission peak ~445 nm
- Thermal resistance: Stable below 270 ℃, suitable for high-temperature vacuum evaporation of OLED devices
- Hygroscopy: Non-hygroscopic
- Sublimation property: Can be sublimated under high vacuum and high temperature without large decomposition
- Crystal feature: High-purity sample forms uniform needle-like crystals after recrystallization from chlorobenzene
Chemical Properties
- Conjugated molecular structure: Central benzene ring connected with two trans-styryl groups, terminal cyano groups extend large π-conjugated system, typical organic conjugated luminescent material
- Cyano group characteristics: Electron-withdrawing cyano group enhances fluorescence quantum efficiency, improves electron transport performance; stable under neutral and weak acid conditions
- Thermal stability: Long-term heating over 295 ℃ causes carbonization, conjugated chain fracture, fluorescence quenching
- Acid-base stability: Stable in neutral and weak alkaline environments; strong concentrated alkali heating leads to cyano hydrolysis into carboxyl impurities; concentrated strong acid destroys conjugated alkene double bonds
- Photostability: Good anti-photobleaching ability among organic blue light materials; long-term high-power UV irradiation slowly reduces luminous efficiency
- Oxidation resistance: Not easy to oxidize in air at room temperature; incompatible with strong oxidants
- Trans-cis isomerization: UV light or high temperature may induce partial cis double bond isomerization to reduce luminous performance
- Compatibility: Compatible with aromatic solvents, hole/electron transport materials for OLED; incompatible with strong oxidants, concentrated strong acid, strong alkali
3. Main Application Fields
1. OLED Organic Light-Emitting Diode Material (Core Application)
High-performance blue light organic luminescent layer material. High fluorescence quantum yield, excellent thermal stability and vacuum sublimation performance, used for small molecule OLED blue light devices, passive matrix display panels, lighting OLED chips. Widely used in mobile phone micro-display, wearable device light-emitting components.
2. Organic Field-Effect Semiconductor Material
Electron transport type conjugated organic semiconductor raw material; applied in organic photodetectors, organic thin film transistors (OTFT), light sensing sensor devices.
3. Fluorescent Brightener & Plastic Fluorescent Colorant
High temperature resistant blue fluorescent additive for PET, PC, PBT engineering plastics; used for transparent luminous plastic parts, optical plastic accessories, high-temperature injection molding products.
4. Laser Dye Intermediate
Blue band organic laser gain medium raw material; used for solid-state dye laser, tunable blue light laser experimental research.
5. Organic Synthesis Conjugated Building Block
Precursor for synthesizing longer conjugated polyene aromatic derivatives, donor-acceptor type photoelectric functional molecules; raw material for new organic solar cell active layer materials.
6. Laboratory Fluorescent Standard Substance
High-purity standard for fluorescence spectrometer calibration, HPLC detection of conjugated organic photoelectric materials.
4. Quality Specification Table
| Test Item | Standard Index |
| CAS Number | 13001-40-6 |
| Molecular Formula | C24H16N2 |
| Molecular Weight | 332.40 |
| Appearance | Yellow crystalline powder with blue fluorescence under UV |
| HPLC Purity | Electronic Grade ≥99.5%; Synthetic Grade ≥98.0% |
| Melting Range | 286.0 ~ 290.0 °C |
| Moisture Content (KF) | ≤0.05% |
| Single Unknown Related Impurity | ≤0.05% |
| Total Related Impurities | ≤0.30% |
| Sublimation Residue | ≤0.10% |
| Heavy Metals (Pb) | ≤1 ppm (Electronic strict standard) |
| Bulk Package | 1g/5g amber nitrogen-filled glass bottle, 1kg aluminum foil vacuum bag |
| Storage Condition | Hermetic nitrogen-filled light-proof warehouse ≤25℃; isolate strong UV light, high temperature and oxidants |
| Transportation Rule | Light-proof sealed moisture-proof packaging, avoid high temperature exposure |
| Shelf Life | 24 months under intact nitrogen-sealed packaging |
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