Poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine)
[CAS# 220797-16-0]

Identification

• Classification: Organic raw materials >> Heterocyclic compound >> Fluorenes
• Name: Poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine)
• Synonyms: TFB
• Molecular Formula: (C₅₁H₆₁N)_n
• Molecular Weight: >30000
• CAS Registry Number: 220797-16-0
• SMILES: CCCCCCCCC1(CCCCCCCC)C2=C(C=CC(C3=CC=C(N(C4=CC=C(C(CC)C)C=C4)C5=CC=C(C)C=C5)C=C3)=C2)C6=C1C=C(C)C=C6

Properties

• Melting point: 166.2 ºC^*

^* Yang, Zhongqiang; Nature Materials 2005, V4(6), P486-490.

Discovory and Applicatios

Poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine) is an important copolymer in the field of organic electronics. This copolymer is composed of two main components: 9,9-dioctylfluorene and N-(4-butylphenyl)diphenylamine. The combination of these two materials gives rise to a polymer with significant electronic properties, making it a valuable material for a range of applications in optoelectronic devices. The fluorene unit serves as the electron-donating segment, while the diphenylamine unit functions as an electron-transporting moiety, creating a copolymer that exhibits both hole and electron mobility.

The discovery of poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine) dates back to the early 2000s when researchers were investigating new materials for organic light-emitting diodes (OLEDs) and other organic electronic devices. The aim was to improve the performance of organic semiconductors by developing copolymers with better charge transport and photonic properties. The incorporation of both a hole-transporting and an electron-transporting component into a single polymer backbone was a novel approach to enhancing the performance of optoelectronic devices. By combining these two components, poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine) demonstrated improved charge balance and stability compared to earlier materials.

One of the primary applications of poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine) is in the field of organic light-emitting diodes (OLEDs). OLEDs are devices that use organic materials to emit light when an electric current passes through them. This copolymer functions as the emissive layer in OLEDs, where its high electron and hole mobilities allow it to efficiently transport charges, leading to better light emission. The copolymer’s ability to efficiently manage charge injection and transport makes it ideal for use in OLED displays and lighting applications. Additionally, its high solubility in common organic solvents allows it to be processed through solution-based techniques, making it suitable for large-area, low-cost manufacturing of OLEDs.

Another important application of poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine) is in organic photovoltaics (OPVs), which are devices that convert sunlight into electricity using organic materials. In OPVs, this copolymer can serve as part of the active layer, where its combined hole and electron transport properties contribute to efficient charge separation and collection. The copolymer's ability to facilitate both the transport of positive and negative charges enhances the overall efficiency of OPVs, making it a promising material for future solar energy applications. As with OLEDs, the copolymer's solubility and processability allow for scalable production of OPVs, which is crucial for cost-effective solar technologies.

The use of poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine) extends beyond OLEDs and OPVs. It has also been explored for use in organic field-effect transistors (OFETs), which are essential components of organic electronics. In these devices, the copolymer acts as the active semiconductor material, where it plays a key role in enabling charge transport and device performance. The copolymer’s high hole mobility and compatibility with flexible substrates make it suitable for use in flexible and stretchable electronics, which have applications in wearable devices and flexible displays.

Ongoing research into poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine) focuses on improving its efficiency, stability, and processability. Modifications to the copolymer structure, such as adjusting the ratio of fluorene and diphenylamine units, are being investigated to further optimize its properties for specific applications. Researchers are also exploring ways to enhance the copolymer’s performance in devices that require long-term stability, such as large-area OLED displays and energy-harvesting technologies.

In conclusion, poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine) is a versatile and efficient copolymer with significant applications in organic electronics, particularly in OLEDs, OPVs, and OFETs. Its unique combination of electron-donating and electron-transporting properties has made it a key material in the development of advanced optoelectronic devices.