Supporting Information_Er3+ -to-dye energy transfer in DNA-coated core and core/shell/shell upconverting nanoparticles with 980 nm and 808 nm excitation of Yb3+ and Nd3+

Experimental procedures: calculation of the spectral overlap integral (J); Fitting of UCL kinetics; Estimation of UCNP concentrations; Estimation of the amount of ss-DNA per NP. Figures: XRD, TEM, Histogram, DLS analysis, absorption, emission and luminescence decays of upconversion nanohybrids.