Description

Poly{4,8-Bis[(2-Ethylhexyl)Oxy]Benzo[1,2-B :4,5-B ']Dithiophene-2,6-Diyl-Alt-3-Fluoro-2-[(2-Ethylhexyl)Carbonyl]Thieno[3,4- B ]Thiophene-4,6-Diyl} is a high-performance conjugated polymer belonging to the class of donor-acceptor (D-A) copolymers, widely recognized as a benchmark material in organic electronics. Its value lies in its exceptional optoelectronic properties, including a tunable bandgap, high charge carrier mobility, and excellent solution processability, which are critical for device performance and manufacturing scalability. This polymer is essential for researchers and manufacturers in the fields of organic photovoltaics (OPVs), organic field-effect transistors (OFETs), and other advanced optoelectronic devices seeking reliable, high-quality materials for next-generation technology development.

Application

• Active Layer Material in Organic Photovoltaic (OPV) Cells: Serves as a key electron-donor component in bulk heterojunction solar cells for efficient light absorption and charge generation.
• Semiconducting Channel in Organic Field-Effect Transistors (OFETs): Used to fabricate high-mobility p-type semiconductor layers for flexible and printed electronics.
• Photodetectors and Sensors: Employed in the development of sensitive organic photodetectors and chemical sensors due to its responsive optoelectronic characteristics.
• Perovskite Solar Cell Additive: Functions as a hole-transport material or interfacial layer to enhance the efficiency and stability of perovskite solar cells.
• Research & Development: A fundamental material for academic and industrial R&D focused on synthesizing and testing new organic electronic device architectures.
• Printed and Flexible Electronics: Ideal for inkjet printing, spin-coating, and other solution-based deposition techniques to create flexible, lightweight electronic circuits and displays.

Basic Information

Product Name	Poly{4,8-Bis[(2-Ethylhexyl)Oxy]Benzo[1,2-B :4,5-B ']Dithiophene-2,6-Diyl-Alt-3-Fluoro-2-[(2-Ethylhexyl)Carbonyl]Thieno[3,4- B ]Thiophene-4,6-Diyl}
CAS No.	1266549-31-8
Molecular Formula	(C44H57FO3S4)n
Molecular Weight	~ Varies by polymerization degree (n). Contact for details.
Synonyms	Poly(benzo[1,2-b:4,5-b']dithiophene-alt-thieno[3,4-b]thiophene) derivative; PTB7; PTB7-Th; Poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl]]; PBDTTT-EFT; PCE10; Donor Polymer PTB7-Th; High-performance OPV polymer; Conjugated D-A copolymer PTB7
EINECS	Contact for details.

Quality Control

Every batch of our conjugated polymers is synthesized and purified under controlled conditions to ensure consistent molecular weight, polydispersity, and end-group fidelity, which are critical for reproducible device performance. We employ advanced analytical techniques including Gel Permeation Chromatography (GPC), Nuclear Magnetic Resonance (NMR) spectroscopy, and elemental analysis for comprehensive characterization. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting key parameters such as molecular weight, purity, and residual metal content to support your R&D and quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C) under an inert atmosphere (e.g., nitrogen or argon) to prevent oxidation and degradation. This material is light-sensitive and easily oxidized; prolonged exposure to air, light, or moisture should be avoided to maintain its optimal electronic properties.

Specification

Item	Specification
Appearance	Dark blue to black solid or powder
Identification (NMR)	Conforms to structure
Number Average Molecular Weight (Mn)	20,000 - 100,000 g/mol (Typical)
Polydispersity Index (PDI)	1.5 - 3.0 (Typical)
Purity (HPLC)	> 95% (Polymer content)
Residual Catalyst (Metals)	< 100 ppm
Solubility	Soluble in common organic solvents (e.g., Chloroform, Toluene, o-Dichlorobenzene)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.