In situ growth of metal–organic frameworks (MOFs) on the surface of other MOFs: a new strategy for constructing magnetic resonance/optical dual mode imaging materials

Abstract

This work presents for the first time the synthesis of a novel nanoscale Fe-MOFs/Eu-MOFs heterostructure, in which spherical Fe-MOFs with a large surface area were introduced as a matrix for the well-dispersed growth of rodlike Eu-MOFs. The obtained Fe-MOFs/Eu-MOFs materials exhibit excellent magnetic resonance/optical imaging capacity and satisfactory drug delivery behavior.