Ring Walking versus Trapping of Nickel(0) during Kumada Catalyst Transfer Polycondensation Using Externally Initiated Electron-Accepting Thiophene Benzothiadiazole Thiophene Precursors

Formation of conjugated polymer brushes by surface-initiated catalyst-transfer polycondensation.

Electroactive conjugated polymer brushes of poly(thiophene) and poly(phenylene) have been prepared via a surface-initiated Kumada-type polycondensation reaction, yielding films with a thickness up to 42 nm.

Nickel (0) Catalyzed Kumada Chain Transfer Polycondensation

Nanoparticles of low Optical Band Gap Conjugated Polymers

Sonogashira coupling of 9,9-bis(2-ethylhexyI)2,7-diethynyl-9H-fluorene (I) with 2,7-dibromo-9,9-bis(2ethylhexyl)-9H-fluorene (2) and dibromo-substituted electron accepting arylenes 5,7-bis(5-bromothiophen-2-yl)-2,3dihexylthieno[3,4-b)pyrazine (3), 4,7-bis(5-bromo-4-(2ethylhexyl)thiophene-2-yI)bis(benzothiadiazole) (4) or 4,9bis (5-bromo-4-{2-ethylhexyl)thiophen-2-yl)-6, 7dihexylthiadiazolo(3,4-...

Synthesis of Benzothiadiazole Derivatives by Applying C-C Cross-Couplings.

The benzothiadiazole moiety has been extensively exploited as a building block in the syntheses of efficient organic semiconducting materials during the past decade. In this paper, parallel synthetic routes to benzothiadiazole derivatives, inspired by previous computational findings, are reported. The results presented here show that various C-C cross-couplings of benzothiadiazole, thiophene, a...

A low band gap co-polymer of dithienogermole and 2,1,3- benzothiadiazole by Suzuki polycondensation and its application in transistor and photovoltaic cells

reduction of steric hindrance between the solubilising alkyl groups and adjacent thiophene rings. The improved crystalline structure of PSBTBT resulted in a higher charge carrier mobility and improved solar cell performance in blends with fullerene derivatives. Low band gap co-polymers containing silafluorene, 40 dithieno[3,2-b:2′,3′-d]silole 7 and silaindacenodithiophene have recently demonstr...