Solvation of quantum dots in 1-alkyl-1-methylpyrrolidinium ionic liquids: toward stably luminescent composites

Figures & data

Figure 1. DSC thermograms of IL-CdTe NP composites with (a) P₁₂-, (b) P₁₄- and (c) P₁₈Tf₂N together with those of 1-alkyl-1-pyrrolidinium salts without NPs

Figure 2. Plots of relative melting enthalpy of 1-alkyl-1-methylpyrrolidinium Tf₂ N salts as a function of NP-volume fraction. ΔH₀ corresponds to the melting enthalpy of ILs without NPs

Figure 3. Plots of estimated solvation layer thickness on NPs in 1-alkyl-1-methylpyrrolidinium Tf₂ N salts as a function of NP-volume fraction together with a schematic representation of solvation layer (above)

Figure 4. XRD patterns of P₁₈Tf₂N, TC-Tf₂ N capped CdTe NPs and 4.8vol% composite

Figure 5. ¹⁹F NMR spectra of (a) P₁₈Tf₂N and (b) its composite with CdTe NPs (10vol%) and (c) their full width at half-maximum (FWHM)

Figure 6. Relative emission intensity of CdTe NPs in ILs under visible irradiation (λ > 440 nm). (NPs concentration: 1.0 × 10⁻⁵M)