Description

4,4'-Bis(2,1,3-benzothiadiazole) is a high-purity organic compound belonging to the benzothiadiazole class, a key building block in advanced material science. This compound matters for its role as a critical electron-accepting unit in the synthesis of conjugated polymers and small molecules for optoelectronic applications. It is primarily needed by researchers and manufacturers in the organic electronics, photovoltaics, and specialty chemical sectors developing next-generation materials.

Application

• Organic Photovoltaics (OPVs): Serves as a core acceptor unit in the design of low-bandgap polymers and non-fullerene acceptors for high-efficiency solar cells.
• Organic Light-Emitting Diodes (OLEDs): Used as an electron-transport material or as a building block in emissive layer hosts for display and lighting technologies.
• Organic Field-Effect Transistors (OFETs): A key component in the development of n-type or ambipolar semiconducting polymers for flexible electronics.
• Chemical Synthesis & Research: Acts as a versatile intermediate for synthesizing novel conjugated systems, dyes, and sensors in academic and industrial R&D.
• Photodetectors: Employed in the fabrication of materials for sensitive light detection across specific wavelength ranges.

Basic Information

Product Name	4,4'-Bis(2,1,3-benzothiazole)
CAS No.	221540-54-1
Molecular Formula	C20H10N4S2
Molecular Weight	370.45 g/mol
Synonyms	4,4'-Bis(benzo[c][1,2,5]thiadiazole); 2,2'-(1,4-Phenylene)bis(2,1,3-benzothiadiazole); 4,4'-Bis(benzothiadiazole); BBT; 4,4'-Di(2,1,3-benzothiadiazolyl); 1,4-Bis(2,1,3-benzothiadiazol-4-yl)benzene; 4,4'-Bis(2,1,3-benzoselenadiazole) analog (common related compound search term); Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Our 4,4'-Bis(2,1,3-benzothiadiazole) is produced under stringent conditions to ensure batch-to-batch consistency and high purity, critical for optoelectronic performance. Each lot undergoes comprehensive analytical characterization, including HPLC for purity and identity confirmation via NMR and mass spectrometry. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your 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. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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