Small molecular thiophene compound having divalent linkage

Details Small molecular thiophene compound having divalent linkage Small molecular thiophene compound having divalent linkage

2007-10-31

2010-11-16

Solola, Taofiq A (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07834199

ABSTRACT:
A small molecular thiophene compound consisting of: at least one divalent linkage; and a plurality of thiophene units, each thiophene unit being represented by structure (A)wherein each thiophene unit is bonded at either or both of the second ring position and the fifth ring position, wherein m is 0, 1, or 2, wherein each thiophene unit is the same or different from each other in terms of substituent number, substituent identity, and substituent position, wherein each R1is independently selected from the group consisting of: (a) a hydrocarbon group, (b) a heteroatom containing group, and (c) a halogen, wherein there is at least one thiophene unit where R1is present at the third ring position or the fourth ring position, or at both the third ring position and the fourth ring position, wherein for any two adjacent thiophene units as represented by structure (A1):there is excluded the simultaneous presence of the same or different R1at the 3-position of one thiophene unit and at the 3′-position of the other thiophene unit, and wherein the number of the thiophene units is at least 6.

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