Thienothiophene, Thieno[3,2-b]thiophene

CAS Number 251-41-2

Chemistry Building Blocks, Heterocyclic Building Blocks, Materials, Monomers

Thienothiophene, Thieno[3,2-b]thiophene MSDS

Thienothiophene, Thieno[3,2-b]thiophene CAS 251-41-2

Thienothiophene, for the synthesis of small molecules and polymers

Available online for fast, secure dispatch

Specifications | MSDS | Literature and Reviews

Thieno[3,2-b]thiophene (CAS number 251-41-2), also known as thienothiophene (TT), is a heterocyclic compound. It belongs to the family of fused thiophenes and is widely used as an intermediate for the synthesis of small molecules and polymers in the application of organic field-effect transistors (OFETs) and organic photovoltaic devices (OPV).

Fused thiophenes are more electron-rich and more structurally rigid, with extended π-conjugation so they are good candidates for adjusting the band gap of the organic polymer semiconducting materials, i.e. Poly[2,5-bis(3-hexadecylthiophen-2-yl)thieno[3,2-b]thiophene] (also known as PBTTT).

pbttt synthesis with 2,5-bis(trimethylstannyl)thieno[3,2-b]thiophene and 5,5'-dibromo-4,4'-didodecyl-2,2'-bithiophene or 5,5'-dibromo-4,4'-dihexadecyl-2,2'-bithiophene or 5,5'-dibromo-4,4'-ditetradecyl-2,2'-bithiophene — PBTTT-C12 (R = dodecyl), PBTTT-C14 (R = tetradecyl), PBTTT-C16 (R = hexadecyl) synthesis with 2,5-bis(trimethylstannyl)thieno[3,2-b]thiophene and 5,5'-dibromo-4,4'-alkyl-2,2'-bithiophene via Stille Coupling polymerisation

Thienothiophene building block

for semiconductors, OFETs, and solar cells

Worldwide shipping

Quick and reliable shipping

With extended π-conjugation

for adjusting the band gap of organic semiconductors

High purity

>95% Purity

General Information

CAS Number	251-41-2
Chemical Formula	C₆H₄S₂
Molecular Weight	140.23 g/mol
Synonyms	1,4-Dithiapentalene Thienothiophene
Classification / Family	Thiophene, Fused thiophene, Dithiapentalene, Heterocylic aromatics, Five-membered ring, Semiconductor synthesis intermediates, Low band gap polymers OFETs, Organic Photovoltaics, Polymer solar cells

Chemical Structure

Product Details

Purity	>95%
Melting Point	56 °C - 58 °C
Appearance	White crystals

MSDS Documentation

Thieno[3,2-b]thiophene MSDS sheet

Literature and Reviews

Thienothiophenes, Dithienothiophenes, and Thienoacenes: Syntheses, Oligomers, Polymers, and Properties, M. E. Cinar et al., Chem. Rev., (2015), DOI: 10.1021/cr500271a
A stable solution-processed polymer semiconductor with record high-mobility for printed transistors, Li et al., Sci. Reports, 2, 754, (2012) DOI: 10.1038/srep00754.
Liquid-crystalline semiconducting polymers with high charge-carrier mobility, I. McCulloch et al., Nat. Mater., 5, 328 (2006)