1320201-13-5

Basic information

• Product Name: C₁₃H₆Br₂O₂S₂
• CAS NO: 1320201-13-5
• Molecular Weight: 418.129
• Mol File: 1320201-13-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: C₁₃H₆Br₂O₂S₂(CAS DataBase Reference)
• NIST Chemistry Reference: C₁₃H₆Br₂O₂S₂(1320201-13-5)
• EPA Substance Registry System: C₁₃H₆Br₂O₂S₂(1320201-13-5)

Safety Data

• Hazardous Substances Data: 1320201-13-5(Hazardous Substances Data)

Upstream product

• 108-95-2 phenol 
• 1024594-86-2 4,6-dibromo-thieno[3,4-b]thiophene-2-carboxylic acid 

Relevant articles and documents

Synthesis and characterization of thieno[3,4-b]thiophene-based copolymers bearing 4-substituted phenyl ester pendants: Facile fine-tuning of homo energy levels

A study was conducted to design and synthesize PTB-based polymers bearing 4-substituted phenyl esters in place of the alkyl esters as the pendants of the thieno[3,4-b]thiophene (TT) unit. It was found that their highest occupied molecular orbital (HOMO) energy levels were readily fine-tuned by changing the substituents on the phenyl groups. Four novel TT monomers bearing various phenyl ester groups (TT1-TT4) were easily prepared in one pot from commercially available phenol derivatives and the key precursor compound, 4,6-dibromothieno[3,4-b]thiophene-2-carboxylic acid, which was synthesized by modified literature procedures. The molecular weights of the obtained polymers were determined by size-exclusion chromatography (SEC) in tetrahydrofuran (THF). The thermal stability of these polymers was investigated by thermal gravimetric analysis (TGA) under a nitrogen atmosphere. The results show that all polymers have good thermal stability with 5% weight loss temperatures (Td) above 300 °C, which is adequate for application in PSC devices.