Hansen solubility parameters (HSPs) provide quantitative insight into the surface chemistry of nanomaterials, enabling a unique approach to ink formulation. In this work, HSPs of upconverting NaYF4 nanoparticles were subjected to a broad spectrum solvent testing method, and a binary solvent gradient (BSG) method to elucidate their HSPs. The outcome of these experiments enables the selection of a number of potential solvents to meet printer and substrate requirements.
Jacob Petersen, Jeevan Meruga, Aravind Baride, P. Stanley May, William Cross, Jon Kellar, "Upconverting Nanoparticle Security Inks Based on Hansen Solubility Parameters" in Proc. IS&T Int'l Conf. on Digital Printing Technologies and Digital Fabrication (NIP31), 2015, pp 383 - 385, https://doi.org/10.2352/ISSN.2169-4451.2015.31.1.art00084_1