EPR and Structural Characterization of Water-Soluble Mn²⁺-Doped Si Nanoparticles.

ABSTRACT: Water-soluble poly(allylamine) Mn²⁺-doped Si (Si_Mn) nanoparticles (NPs) were prepared and show promise for biologically related applications. The nanoparticles show both strong photoluminescence and good magnetic resonance contrast imaging. The morphology and average diameter were obtained through transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM); spherical crystalline Si NPs with an average diameter of 4.2 ± 0.7 nm were observed. The doping maximum obtained through this process was an average concentration of 0.4 ± 0.3% Mn per mole of Si. The water-soluble Si_Mn NPs showed a strong photoluminescence with a quantum yield up to 13%. The Si_Mn NPs had significant T₁ contrast with an

SUBMITTER: Atkins TM 

PROVIDER: S-EPMC5278496 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature