Hierarchical Assembly of Multilayered Hollow Microspheres from an Amphiphilic Pharmaceutical Molecule of Azithromycin

Hollow microspheres with multilayered porous shells are formed by a template-free method by hierarchical assembly of azithromycin molecules. This simple, rapid. and high-yielding method allows the number of layers to be tailored by regulating the initial concentration of azithromycin solution. Such structures may find applications in controlled drug delivery amongst other fields.