Judging by the data that we have available, it seems that the emission of the films prepared using the MM machine are blue-shifted when compared with the emission of the films prepared using the Edwards machine. The relative spectral shift is of about 10 nm. The emission of the glass is not so apparent in the case of the samples prepared using the MM machine, probably because these samples have a higher quantum yield. In my opinion, the results are compatible with the presence of energy transfer towards relatively less energetic species. Some of these species may emit at relatively long wavelengths, while others may be non-emissive, the overall outcome being a higher amount of fluorescence quenching in the case of the films prepared in the Edwards machine. Of course that all of this is highly hypothetical. Perhaps anisotropy measurements could shed some light into the behaviour of the system, since homotransfer should result in lower anisotropy values.