biomaterials for cancer therapy, we employed here porous silicon nanoparticles as a
nanocarrier to deliver contrast agents to diseased cells. Nanoconfinement of small molecule
Gd-chelates (L1-Gd) enhanced the T 1 contrast dramatically compared to distinct Gd-chelate
(L1-Gd) by virtue of its slow tumbling rate, increased number of bound water molecules, and
their occupancy time. The newly synthesized Gd-chelate (L1-Gd) was covalently grafted on …