Fig. 1. (a) Chemical structures of the block copolymer P, the diphenyl-diacetylene monomer M and the photoconverted oligo (diphenyl-diacetylene) of dimer D and trimer T. (b) A proposed process for the preparation route for the micellar ensemble P-M as well as the photoinduced luminescent color conversions of the co-micellar system: with an optimized encapsulation of the block copolymer, the trimeric oligodiacetylene will be preferentially formed in the ensemble first (P-T); continuous irradiation of the system further increases the content of the dimeric oligodiacetylene to generate P-DT and P-DT2. The luminescent color conversion originates from the change in the emissive proportion of the trimer and the dimer.