Boron ester fused thiophene monomers
A compound of formula (I), formula (II), or a combination thereof, and salts thereof is described. Each A may be independently an optionally substituted conjugated species or an optionally substituted aromatic species. Each R may be independently an optionally substituted C 1 -C 40 linear alkyl chain, an optionally substituted branched alkyl chain, an optionally substituted alkyl chain containing heteroatoms, substituted alkyl chains, or H. Each R 2 may be independently an optionally substituted C 1 -C 40 linear alkyl chain, an optionally substituted branched alkyl chain, an optionally substituted alkyl chain containing heteroatoms, substituted alkyl chains, H, or part of a cyclic boronate ester with an other R 2 . Each n may be independently less than or equal to 3 and greater than or equal to 1. Each x may be independently less than or equal to 3.
1. A compound
of formula (I), or formula (II), or a combination thereof, and salts thereof,
wherein each A is independently an optionally substituted conjugated species or an optionally substituted aromatic species,
wherein each R is independently an optionally substituted C 1 -C 40 linear alkyl chain, an optionally substituted branched alkyl chain, an optionally substituted alkyl chain containing heteroatoms, substituted alkyl chains, or H,
wherein each R 2 is independently an optionally substituted C 1 -C 40 linear alkyl chain, an optionally substituted branched alkyl chain, an optionally substituted alkyl chain containing heteroatoms, substituted alkyl chains, H, or part of a cyclic boronate ester with another R 2 ,
wherein each n is independently less than or equal to 3 and greater than or equal to 1, and
wherein each x is independently less than or equal to 3.
2. The compound of claim 1 , wherein the optionally substituted conjugated species is one selected from the group consisting of ethylene, butadiene, and acetylene.
3. The compound of claim 1 , wherein the optionally substituted aromatic species is one selected from the group consisting of benzene, naphthalene, anthracene, pyrene, thiophene, pyrrole, porphyrins, carbazoles, furan, indole, and fused thiophenes.
4. The compound of claim 1 , wherein each x is independently less than or equal to 1.