Fused polycyclic heteroaromatic compound, organic thin film including compound and electronic device including organic thin film
AssigneeSamsung Electronics Co., Ltd.
InventorsDon-Wook Lee, Jeong Il Park, Eun Kyung Lee
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Abstract
A low-molecular-weight fused polycyclic heteroaromatic compound includes a compound represented by Chemical Formula 1A, a compound represented by Chemical Formula 1B, or a combination thereof. The fused polycyclic heteroaromatic compound has a compact planar structure in which five or more aromatic rings are fused together, and thereby exhibit higher charge mobility, and furthermore, enables the use of a deposition process or a room-temperature (about 20 to about 25° C.) solution process when applied to devices, therefore realizing improved processibility.
Claims11
A fused polycyclic heteroaromatic compound represented by Chemical Formula 1B:
- wherein, in Chemical Formula 1B,
- each of Ar1, Ar2, and Ar3 are independently selected from phenylene, naphthalene, and anthracene,
- a, b and c correspond to a number of hydrogens bound to a carbon of Ar1, Ar2, and Ar3,
- each of X1 and X2 are independently selected from S, Se, Te, and N—Ra, wherein Ra is independently selected from hydrogen and a linear or branched C1 to C10 alkyl group,
- each of X3 and X4 are independently selected from O, S, Se, Te, N—Ra, and C(Rb)═C(Rc), wherein Ra, Rb, and Rc are independently selected from hydrogen and a linear or branched C1 to C10 alkyl group,
- each of R1 to R7 are independently selected from hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, a substituted or unsubstituted C7 to C30 arylalkyl group, a substituted or unsubstituted C2 to C30 heteroarylalkyl group, a substituted or unsubstituted C2 to C30 alkylheteroaryl group, a substituted or unsubstituted C5 to C30 cycloalkyl group, and a substituted or unsubstituted C2 to C30 heterocycloalkyl group,
- one of R1 and R2, and R3 and R4, are linked with each other to provide one of a C5 aromatic ring and a C6 aromatic ring,
- n1 is 1 or 2,
- n2 is 0 or 1,
- n1+n2 is greater than or equal to 1, and
- at least one hydrogen of the aromatic ring at an outermost position of Chemical Formula 1B is substituted with a functional group represented by Chemical Formula 2,
- wherein, in Chemical Formula 2,
- L is selected from a single bond, a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C3 to C30 arylene group, and a substituted or unsubstituted C3 to C30 heteroarylene group,
- each of Y1 and Y2 are independently selected from O, S, Se, Te, and NH,
- each of Rp and Rq are independently selected from hydrogen and a C1 to C6 alkyl group,
- each of Rr, Rs, Rx, Ry, and Rz are independently selected from hydrogen, a C1 to C6 alkyl group, a C6 to C10 aryl group, and a C3 to C10 heteroaryl group,
- p is an integer ranging from 1 to 5,
- q is an integer ranging from 1 to 30, and
- r is an integer ranging from 0 to 2.
Dependencies are inferred from the claim text.