Luminescent supramolecular assemblies based on hydrogenbonded complexes of stilbenecarboxylic acids and dithieno[3,2b:2′,3′d]thiophene2carboxylic acids with a tris(imidazoline) base
The invention provides optical agents, including compositions, preparations and formulations, and methods of using and making optical agents. Optical agents of the present invention include oligomer dyes, and derivatives thereof, having a fused ring backbone structure having an oligothiophene core. In some embodiments, oligomer dyes of the present invention are fused ring thiophene dyes having an oligothiophene core comprising a plurality of fused thiophene, thiophene-oxide, and/or thiophene-dioxide rings, optionally functionalized to provide useful optical, biological, pharmacokinetic and/or physical properties. The compounds are dithieno[3,2-b;2′,3′-d]thiophene derivatives.