Hierarchical self-assembly of 3D amphiphilic discrete organoplatinum(Ⅱ)metallacage in water

Here we described the design and synthesis of a discrete 3D amphiphilic metallacage 4,in which the tetragonal prismatic frameworks act as the hydrophobic cores and the poly（ethylene glycol）(PEG) chains as the hydrophilic tails.The structure of 4 was characterized by;H NMR,;P NMR and electrospray ionization time-of-flight mass spectrometry（ESI-TOF-MS）.Notably,4 with its Iong PEG tails was subsequently ordered into micelles at a low concentration（1.20×10;mol/L） in water.As the concentration and cultivation time increased,the micelles can further self-assembly into nanofibers and nanoribbons.Considering the dynamic property of the coordination bond,these structures show reversible transformation under external stimuli.