“…53,54 To regulate the solubility of insoluble PB in different hydrophobic/hydrophilic organic solvents and water, Fe 4 [Fe(CN) 6 ] 3 ·15H 2 O was surface-functionalized with Na 4 [Fe II (CN) 6 ] and a shortened alkylamine bond. 55 For biological applications, it is possible to obtain Gd(H 2 O) 4 [Fe(CN) 6 ] with a diameter of 5 nm by employing polyethylene glycol or d -mannitol. 56 An alternative approach was developed to produce PBA (NiFe, NiCr, PB, and MnCr), which exhibited a diameter in the range of 1.7 to 5.2 nm.…”