“…Recently, hollow spheres have attracted increasing interest because of their application in drug delivery, [1][2][3] cell and enzyme transplantation, [4] gene therapy, [5] separation in biomedicine, and as contrast agents in diagnostics. [6,7] Despite significant advances in the preparation of hollow inorganic or polymeric spheres, [8][9][10][11] the construction of nanosized hybrid hollow spheres with both inorganic component and organic polymers as the shells remains a major challenge.…”