Organic semiconductors

A semiconductor having organic solvent solubility and represented by the expression:

• D[A].sub.q
• wherein:
• D represents a moiety having the structure:
• ##STR15## in which J represents either R.sub.1 or a group having the formula ##STR16## K represents either R.sub.3 or a group having the formula ##STR17## R.sub.1 and R.sub.4 are each selected from the group consisting of a hydrogen atom, a hydroxy radical, a lower alkyl radical, a lower alkoxy radical, an amino radical, an aryl radical, an acyl radical, a carboxylate radical, a thio radical, a nitrate radical, a sulfonate radical, a halogen atom and a cyano radical;
• R.sub.2 and R.sub.3 each represent (1) an uncharged radical selected from the group consisting of oxo, imino and thioxo radicals or (2) a charged radical selected from the group consisting of alkoxonium, iminium, and sulfonium radicals;
• and
• n and p are each integers having the following combinations of values:
• ______________________________________ ##STR18## and K represents R.sub.3, p = 0n = 0, 1, 2, 3, 4, 5 p = 1n = 0, 1, 2, 3 p = 2n = 0, 1 when J represents R.sub.1 and K represents R.sub.3, p = 0n = 0, 1, 2, 3, 4, 5, 6 p = 1n = 0, 1, 2, 3, 4 p = 2n = 0, 1, 2 p = 3n = 0 when J represents R.sub.1 and ##STR19## ##STR20## ______________________________________
• A is a polymeric acid when R.sub.2 and R.sub.3 are each an uncharged radical and when R.sub.2 and/or R.sub.3 is a charged radical, A is an anion derived from an polymeric acid;
• and
• q represents the number of A moieties associated with each D and is a positive integer that is greater than 0 and less than or equal to the number of amine groups in the D moiety.