Basf Se Corporation

Max-planck-gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

Dirk Beckmann

Klaus Muellen

Marcel Kastler

Silke Annika Koehler

Natalia Chebotareva

Xinliang Feng

Mathias Dueggeli

Ralph Rieger

Ralph Reiger

Miaoyin Liu

Peng Gao

Hoi Nok Tsao

Silke Koehler

An organic semiconductor material, layer or component, comprising a copolymer of the formula wherein v and w each generally are from the range 4 to 1000; A is a benzodithiophene repeating unit of the formula II or III and COM is selected from certain arylene-type repeating units, and combinations thereof. The present copolymers, as well as composites thereof, may be used as semiconductor in the preparation of electronic devices such as photodiodes, organic field effect transistors and especially organic photovoltaic devices such as solar cells.

Annellated dithiophene copolymers

Poly(5,5'-bis(thiophen-2-yl)-benzo[2,1-b;3,4-b&#x2032;]dithiophene) comprising as repeating units the group of the formula (I) wherein R is independently selected from a) a Calkyl group, b) a Calkenyl group, c) a Calkynyl group, d) a Calkoxy group, e) a &#x2014;Y&#x2014;Ccycloalkyl group, f) a &#x2014;Y&#x2014;Caryl group, g) a &#x2014;Y-3-12 membered cycloheteroalkyl group, or h) a &#x2014;Y-5-14 membered heteroaryl group, wherein each of the Calkyl group, the Calkenyl group, the Calkynyl group, the Ccycloalkyl group, the Caryl group, the 3-12 membered cycloheteroalkyl group, and the 5-14 membered heteroaryl group is optionally substituted with 1-4 Rgroups, Ris independently selected from a) a S(O)&#x2014;Calkyl group, b) a S(O)&#x2014;OCalkyl group, c) a S(O)&#x2014;OCaryl group, d) a C(O)&#x2014;OCalkyl group, e) a C(O)&#x2014;OCaryl group, f) a Calkyl group, g) a Calkenyl group, h) a Calkynyl group, i) a Calkoxy group, j) a Ccycloalkyl group, k) a Caryl group, l) a 3-12 membered cycloheteroalkyl group, or m) a 5-14 membered heteroaryl group, Y is independently selected from a divalent Calkyl group, or a covalent bond; and m is independently selected from 0, 1, or 2, and having a number average molecular weight Min the range of from 5,000 to 200,000 g/mol. 

Poly(5,5'bis(thiophen-2-yl)-benzo[2,1-b;3,4-b&#x2032;]dithiophene) and its use as high performance solution processable semiconducting polymer

Dithienobenzodithiophenes of general formula (I) in which Rto Rare each independently selected from a) H, b) halogen, c) &#x2014;CN, d) &#x2014;NO, e) &#x2014;OH, f) a Calkyl group, g) a Calkenyl group, h) a Calkynyl group, i) a Calkoxy group, j) a Calkylthio group, k) a Chaloalkyl group, I) a &#x2014;Y&#x2014;Ccycloalkyl group, m) a &#x2014;Y&#x2014;Caryl group, n) a &#x2014;Y-3-12 membered cyclo-heteroalkyl group, or o) a &#x2014;Y-5-14 membered heteroaryl group, wherein each of the Calkyl group, the Calkenyl group, the Calkynyl group, the Ccycloalkyl group, the Caryl group, the 3-12 membered cyc-loheteroalkyl group, and the 5-14 membered heteroaryl group is optionally substituted with 1-4 Rgroups, wherein Rand Rand Rand Rmay also together form an aliphatic cyclic moiety, Y is independently selected from divalent a Calkyl group, a divalent Chaloalkyl group, or a covalent bond; and m is independently selected from 0, 1, or 2. The invention also relates to the use of the dithienobenzodithiophenes according to any of claimstoas semiconductors or charge transport materials, as thin-film transistors (TFTs), or in semiconductor components for organic light-emitting diodes (OLEDs), for photovoltaic components or in sensors, as an electrode material in batteries, as optical waveguides or for electrophotography applications. 

High performance solution processable semiconductor based on dithieno [2,3-D:2', 3&#x2032;-D&#x2032;]benzo[1,2-B:4,5-B&#x2032;] dithiophene

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Harxheim, Germany

Dirk Beckmann