Patent ID: 7041910

Claim:
An aggregate composition comprising: a plurality of polymer molecules, each polymer molecule, prior to aggregation, comprising at least 7 monomer units or having a molecular weight of at least 7000 g/mol, having a fluorescence quantum yield of at least 2%, being electrically conductive or semiconductive, and having electrical properties such that electronic interactions extend at least 2 monomer units from their source such that a spectral comparison of one of the monomer units to the polymer molecule comprising such unit demonstrates a change in gap between the highest filled molecular or electronic orbital and the lowest unfilled molecular or electronic orbital of the monomer unit versus the polymer molecule of at least 0.1 eV, the aggregate comprising the polymer molecules arranged in a non-aligned, electronically-communicative manner providing a fluorescence quantum yield for the aggregate at least 0.05 times that of the individual quantum yields of the polymer molecules, an absorption spectrum having a unique, red-shifted absorption relative to an absorption spectrum of a random dispersion of the polymer molecules, and being stable in the absence of solvent for at least one minute in air at no less than 50 degrees Celsius, as indicated by a change in quantum yield of no greater than 5% and a change in wavelength of the unique absorption of no more than 5%.