Crystal growth of gold nanoparticles through annealing induced phase transition of semifluorinated block copolymer micellar films

► Gold nanoparticles were formed in the PEO phase of PEO-b-PFOMA micellar films. ► Annealing methods were examined for morphology transition of the hybrid films. ► The gold nanoparticles followed the morphological transition of the PEO phase. ► Crystal growth of the nanoparticles was investigated through the phase transition.