Fig. 4
Reproduced with permission from Ref [235]. Copyright 2021, American Chemical Society
A The illustration of interfacial dynamic migration mechanism. a The formation process of the streamlined mesoporous silica nanoparticles. b Schematic illustration for the curvature regulation of the streamlined mesoporous nanoparticles by using surfactants with different chain lengths. c–e TEM images of the streamlined silica nanoparticles with different curvatures. All scale bars are 50 nm. B Streamlined hollow mesoporous silica nanotadpoles. a, c, d TEM images with different magnifications, b SEM image, and e structural model of the mesoporous silica nanotadpoles prepared by the interfacial dynamic migration strategy. f Element mapping of the mesoporous silica nanotadpoles. Scale bars represent 500 nm in panels a and b, 100 nm in panels c, d, and h. Insets in panel a: digital photo of the tadpoles (upper right corner) and the corresponding distribution histograms of the body length of the mesoporous silica nanotadpoles (lower right corner).