prov:value
| - Examples of suitable thiophenes for the present invention include those of the general formula [0093] (shown in the reduced form) wherein R and R??? each, independently of the other, is a hydrogen atom, an alkyl group, including linear, branched, saturated, unsaturated, cyclic, and substituted alkyl groups, typically with from 1 to about 20 carbon atoms and preferably with from 1 to about 16 carbo
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