Thieno[3,2-b]thiophene, CAS No. 251-41-2

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251-41-2

Catalog No. EBD44255

CAS 251-41-2

Name Thieno[3,2-b]thiophene

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Basic Information

Synonyms: Thieno[3,2-b]thiophene 1,4-Dithiapentalene K0277 1,4-thiophthene buttpark14550-51 1,4-dithiapentalene1,4-thiophthene 4-dithiapentalene1,4-thiophthene thieno[3,2-b]thiophen

Molecular Formula: C6H4S2

Molecular Weight: 140.23

MDL Number: MFCD00179479

Categories: Materials Chemistry > Optoelectronic and Organic Semiconductor Materials > Thiophene, Pyrene, and Fluorene Derivatives Materials Chemistry > Polymers and Macromolecular Materials > Functional Copolymer Monomers

Product Description:

Thieno[3,2-b]thiophene is a fused heteroaromatic compound consisting of a thiophene ring annulated with a thiophene unit. This planar, rigid, and electron-rich structure makes it a highly valuable building block in materials science. Its primary and most significant application is as a core unit in the design and synthesis of high-performance organic semiconductors. It is extensively used in the development of conjugated polymers and small molecules for organic field-effect transistors (OFETs), organic photovoltaics (OPVs), and organic light-emitting diodes (OLEDs). Polymers incorporating thieno[3,2-b]thiophene, such as poly(thieno[3,2-b]thiophene) and its copolymers with other units like benzodithiophene, are renowned for their excellent charge carrier mobility, good solution processability, and tunable electronic properties. Due to its ability to enhance intermolecular π-π stacking and improve charge transport, it is a critical monomer for creating functional copolymers used in flexible electronics and printed electronic devices. Its synthesis and functionalization are key research areas in advanced material chemistry.

Physical Properties

Melting Point: 53-58 °C

Boiling Point: 223.4 °C at 760 mmHg

Flash Point: 98 °C

Density: 1.367 g/cm3

Safety Information

Packing Level:

Hazard Category:

Transport Codes: 3335