Description

Diethyl 2,2'-(Thieno[3,2-B]Thiophene-2,5-Diyl)Bis(Thiophene-3-Carboxylate) is a high-purity, conjugated organic semiconductor building block. This compound matters for its role as a key intermediate in the synthesis of advanced organic electronic materials, offering precise structural control for tuning optoelectronic properties. It is essential for R&D and production teams in the organic electronics and advanced materials sectors who require reliable, high-quality precursors for next-generation devices.

Application

• Critical monomer or intermediate in the synthesis of donor-acceptor (D-A) type conjugated polymers for organic photovoltaics (OPVs).
• Building block for developing small molecule organic semiconductors used in organic field-effect transistors (OFETs).
• Precursor material for organic light-emitting diode (OLED) emitters and transport layers.
• Research and development of novel n-type or ambipolar organic semiconductor materials.
• Used in the fabrication of perovskite solar cell- Synthesis of electrochromic materials and conductive polymers for smart windows and displays.
  • Production of chemical sensors and bio-sensors utilizing conjugated polymer frameworks.
  • Advanced material research in flexible and printed electronics.

Basic Information

Item	Details
Product Name	Diethyl 2,2'-(Thieno[3,2-B]Thiophene-2,5-Diyl)Bis(Thiophene-3-Carboxylate)
CAS No.	1343457-55-5
Molecular Formula	C22H18O4S4
Molecular Weight	490.64 g/mol
Synonyms	Diethyl 2,2'-(thieno[3,2-b]thiophene-2,5-diyl)dithiophene-3-carboxylate; 2,5-Bis(3-(ethoxycarbonyl)thiophen-2-yl)thieno[3,2-b]thiophene; Thieno[3,2-b]thiophene-2,5-diylbis(thiophene-3-carboxylic acid ethyl ester); TT-2T-COOEt; DETT; (Thieno[3,2-b]thiophene-2,5-diyl)bis(2-thiophenecarboxylic acid ethyl ester); Ethyl 5-(5-(ethoxycarbonyl)thiophen-2-yl)thieno[3,2-b]thiophene-2-carboxylate
EINECS	Contact for details

Quality Control

Our Diethyl 2,2'-(Thieno[3,2-B]Thiophene-2,5-Diyl)Bis(Thiophene-3-Carboxylate) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure high purity and batch-to-batch consistency suitable for sensitive electronic applications. Certificates of Analysis (COA) with detailed specifications are provided to guarantee compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (HPLC)	Conforms
Identification (NMR)	Conforms
Purity (HPLC)	≥ 98.0% (Area %)
Melting Point	Contact for details
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Residual Solvents (GC)	Meets ICH guidelines

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