Poly (5,5'-bis (2-yl) - benzo 2,1-b; 3,4-b ' dithiophene), and its use of the semiconductor polymer as a high-performance solution that can be processed.

摘要

As a repeating unit, the formula (I) [Formula 1] (However, R _is, a) C 1-20 alkyl _group, b) C 2-20 alkenyl _groups, c) C 2-20 alkynyl _group, d) C 1-20 alkoxy _group, e) -Y-C 3-10 cycloalkyl _group, f) -Y-C 6-14 aryl group, g) -Y-3-12 membered cycloheteroalkyl group, or h) independently selected from -Y-5-14 membered heteroaryl group, Here, C _1-20 alkyl group, C _2-20 alkenyl group, C _2-20 alkynyl group, C _3-10 cycloalkyl group, C _6-14 aryl group, 3-12 membered cycloheteroalkyl group, and, 5-14 membered heteroaryl group may be optionally substituted with 1-4 R ¹ groups, R ¹_{is, a) S (O) m} -C 1-20 alkyl _{group, b) S (O) m} -OC 1-20 alkyl _{group, c) S (O) m} -OC 6-14 aryl group, d- ₎ C (O) -OC 1-20 alkyl group, e) C (O) -OC 6-14 aryl _group, f) C 1-20 alkyl _group, g) C 2-20 alkenyl _group, h) C 2- ₂₀ alkynyl _group, i) C 1-20 alkoxy _group, j) C 3-10 cycloalkyl _group, k) C 6-14 aryl group, l) 3-12 membered cycloheteroalkyl group, or m) 5-14, independently selected from heteroaryl group of employees, Y is a divalent C _1-6 alkyl group, or selected from covalent bond; and m are independently selected from 0, 1 or 2) It includes groups, and number average molecular weight M _n of the poly (5,5'-bis, characterized in that in the range of 5000~200000g / mol (thiophen-2-yl) - benzo [2,1-b ; 3,4-b '] dithiophene). .BACKGROUND