Fig. 5: Fabrication of Fl–Ph MOF-containing PCL polymer filaments for 3D encryption with a smartphone.
From: Dual-light emitting 3D encryption with printable fluorescent-phosphorescent metal-organic frameworks
a Schematic illustration of Fl MOF and Fl–Ph MOF particle-embedded PCL filament fabrication using a pre-patterned PDMS mold. b Photographs of the Fl–Ph MOF@PCL filament fabrication process with maintained dual light emission. c Schematic illustration of 3D-encrypted cube construction, with real information with blue phosphorescence concealed in the fake information with green photoluminescence under UV exposure. d Photographs of the Fl–Ph MOF@PCL filament and assembled 3D cubes. e Cross-sectional SEM image and f XRD patterns of the Fl–Ph MOF@PCL filaments
