The present disclosure relates to delivering neutral bioimaging molecules encapsulated within icosahedral DNA capsules in vivo and in vitro. The present disclosure also discloses the entrapment of neutral bioimaging molecules like FITC dextran within the cavity of a DNA polyhedron without any molecular recognition or chemical conjugation between host (DNA icosahedron) and cargo (like FITC Dextran). This DNA polyhedron is structurally well defined and shows high encapsulation efficiency. The present disclosure also relates to complex formed due to the encapsulation of neutral bioimaging agents within icosahedral DNA capsules.
