Extended Data Fig. 5: 1H-1H cross peak intensity buildup of protons in EMIM-TFSI and PP13-TFSI correlated to PEO from the 2D 1H-1H NOESY spectra of HSE-PP13 and HSE-EMIM.
From: Improving Li-ion interfacial transport in hybrid solid electrolytes
1H-1H cross peak intensity buildup of protons in EMIM-TFSI (a) and PP13-TFSI (b) correlated to PEO from the 2D 1H-1H NOESY spectra of HSE-PP13 and HSE-EMIM given in Fig. 4. All the cross peaks between EMIM-TFSI and LiTFSI-PEO appear at nearly at the same mixing time which means that there is no preferred orientation of the EMIM-TFSI species with respect to PEO. While a sequence of cross peak evolution with mixing time is observed in HSE-PP13. At the shortest mixing times, 1H-1H correlations are first observed between 1H resonances at positions 1.0 ppm and 1.6 ppm on the piperidine ring of PP13-TFSI and the –OCH2- protons from PEO. These ring protons are the furthest away from the bulky propyl and methyl groups attached to the N atom on the piperidine ring.
