Synthesis and magnetism of ε-Fe3N submicrorods for magnetic resonance imaging.

Fe3N submicrorods with desirable magnetic properties were prepared from a designed metal-organic framework precursor via a modified ethanediamine nitridation route. Magnetic resonance imaging using the Fe3N submicrorods was investigated carefully, confirming the Fe3N submicrorod could be acceptable as a significant contrast agent for its outstanding concentration dependent signal and high r2 relaxivity. Besides, the excellent saturation magnetization and homogeneous dispersity also developed the Fe3N application range.