Fig. 1. （a） Chemical structure and schematic illustration of the triblock copolymer PAA-b-PCEMA-b-PFOEMA； （b， c， e） TEM images and （d， f） AFM images of micelle structure of triblock copolymer PAA-b-PCEMA-b-PFMA assembled in mixed solvent （TFT/MeOH）； （g） Schematic illustration and TEM images of ring， racquet and other ring polygonal micelles assembled from block copolymer PAA-b-PCEMA-b-PFMA； （h） Schematic illustration of packing of the PFOEMA block at a sharp vertex and in the straight sections of the polygonal structure^［29］.

Fig. 2. （a） Chemical structure and schematic illustration of the diblock copolymer PEG-b-PCholA； （b） Cryo-TEM image of the nanofiber structure micelle assembled by diblock copolymer PEG114-b-PCholA （14%∶86% is the hydrophilic/hydrophobic weight ratio） in water； （c） Structural model of nanofiber micelles；（d） Cryo-TEM image of the vesicles assembled by diblock copolymer PEG114-b-PCholA （28%∶72%） in water； （e） Structural model of vesicles^［30］.

Fig. 3. （a） Chemical structure of diblock copolymer P2VP-b-PFMA and schematic illustration of monodisperse cylindrical micelles prepared by self-seeding process； TEM images of uniform micelles obtained for the seed micelles were annealed at （b） 50 ℃ and（c） 75 ℃ for 1 h and cooled to room temperature； （d） Number average length L_n of micelles versus annealing temperature^［35］.

Fig. 4. （a） Chemical structure of diblock copolymer PBLG-b-PNIPAM and the formation of monodisperse cylindrical micelles through seed growth； （b） TEM images of cylindrical micelles； （c） Schematic illustration of the LC structure along the main axis of the micelles； （d） TEM images of terminated PBLG-b-PNIPAM cylindrical micelles； （e） Schematic illustration to simulate the morphology of terminating aggregates^［36］； （f） Fusion growth process of forming monodisperse 2D disk micelles； （g）TEM images of disk seeds formed by PBLG-b-PEG； （h） TEM images and （i） CLSM images of disk micelles were prepared by seeded-growth； （j） Diagram of the area of the disk with the ratio of monomers and seeds^［37］.

Fig. 5. （a） Chemical structure of diblock copolymer P2VP-b-PFMA and the formation of dynamic covalent bonds between PhSeBr and P2VP units； （b） Schematic illustration of cylindrical micelles prepared by one-pot method and （c） diagram of mechanism； （d） AFM image of cylindrical micelles prepared by the one-pot method； （e） Linear relationship between M/M_I and 1/R_I for small molecule initiators； （f） TEM image of the cylindrical micelles produced from the thermo-seeded growth process^［39］； （g） Schematic illustration of pentablock cylindrical micelles prepared by in-situ initiation-growth strategy and （h） TEM image， and the inset is DF-TEM image and corresponding EDX-ray analysis^［40］.

Fig. 6. （a） Schematic illustration of initiators in four different dimensions； TEM images of hierarchical micelles prepared with （b） P（tBA-r-AA）as a zero-dimensional initiator， （c） CNT as a one-dimensional initiator， （d） GO as a two-dimensional initiator and （e） NS as a three-dimensional initiator^［39］.

Fig. 7. （a） Schematic illustration of controllable preparation of cylindrical micelles by in-situ nucleation-growth strategy； （b） TEM images of homogeneous triblock cylindrical micelles； （c） Variation of cylindrical micelles length versus the time and solution temperature during the cooling process； （d） Variation of cylindrical micelles length with the mass ratio of P2VP₉₀-b-PFMA₆₁ and P2VP₆₈-b-PFMA₄₁； （e） TEM images of heterogeneous triblock cylindrical micelles； （f） TEM images of heterogeneous pentablock cylindrical micelles； （g） TEM and TEM-EDS images of heterogeneous triblock hybrid cylindrical micelles^［41］.

Fig. 8. （a） Chemical structure of diblock copolymer PMMA-b-PCholMA and schematic illustration of uniform cylindrical micelles prepared by in-situ nucleation-growth strategy； TEM images of cylindrical micelles obtained in different solvent mixtures： 8% （volume fraction） （b）TCE and （c） DMSO in NMP； （d） The variation of cylindrical micelle length and PDI versus the volume fraction of the solvents； （e） Length and PDI of cylindrical micelles versus different solvent composition^［42］.

Fig. 9. （a） Chemical structure of diblock copolymer PtBA-b-PHATMA； （b） Schematic illustration of the two morphological evolution routes with different mechanisms； （c~f） TEM images of micelles by self-assembly of PtBA-b-PHATMA； （g） Schematic illustration of intramolecular chain rearrangement mechanism； （h） Schematic illustration of the doping of HAT moieties with TNF molecules and the corresponding packing of discotic mesogens； （i） TEM image of fiber-like micelles after doping a higher ratio of TNF （r=1.0）； （j） TEM images of cylindrical micelles by self-seeding under annealing condition at 72 ℃； （k） Plot of L_n and the semilogarithmic plot of the fraction of surviving seeds versus annealing temperatures^［43］.

Fig. 10. （a） Synthesis route of PDMA-b-PBzMA-b-PFMA triblock copolymer； （b~i） TEM images of typical micelles morphology； （j） Schematic illustration of mesogen-tuned morphological transition of the assemblies by polymerization-induced self-assembly^［44］.

Fig. 11. （a） Schematic illustration of the PICSA process of azobenzene-containing BCPs； （b）TEM images of typical micelles morphology prepared by PICSA method； （c，d） AFM images of helical fiber-like structures^［46］.

Fig. 12. （a） Schematic illustration of the PISA process of stilbene-containing BCPs； （b，c）TEM images and （d） AFM image of typical cylindrical micelles； （e） Phase diagram of self-assembly structure of PMAStb with different polymerization degree and different solid content^［50］.

Fig. 13. （a） Schematic illustration of the “end-to-end” coupling process； （b） Corresponding TEM images； （c） DLS data of micelles after annealing at 70 ℃ for 16 h and 6 months^［35］； （d） Schematic illustration of the mechanism of one-step “end-to-end” coupling protocol to form hierarchical supermicellar fibrils； （e） TEM and （f） AFM images of the supermicellar fibrils^［59］.

Fig. 14. （a） SEM image of rod-like micelles of PBLG-g-PEG； （b~f） SEM images of the aggregates generated from the rod-like micelles with the increase of DMF or THF content （volumn fraction）； （d，g） TEM images of corresponding figures （c） and （f）， respectively^［61］. The scale is 300 nm.

Fig. 15. （a） Schematic illustration of the formation of bundle-like nanostructures in solution by a two-step process； （b） SEM image of the initial nanorods formed in PBLG₆₀-b-PEG₈₀/PBLG₄₁₁ polymer solution； （c，d） SEM images of the bundle-like structure； （e） Hydrodynamic radius （R_h） distribution of aggregates at different times； （f） Number-average degree of polymerization （X_n） versus polymerization time^［64］.

Fig. 16. TEM images of amphiphilic triblock cylindrical micelles formed by supramolecular assembly of P2VP₆₈-b-PFMA₄₁ and PMMA₁₆₄-b-PCholMA₂₂ in 2-PrOH. （a） Individual （R=1%）； （b）“Cross“‍-shaped （R=2%）； （c） Bundled（R=5%）； （d） Aggregated cylindrical micelles （R=20%）； （e） Corresponding structural model diagrams. The inset in （a） is a TEM-EDS line scan analysis image of the sample^［41］.