fig2
Figure 2. Optical and chemical interaction analysis of PDINN-based CILs. (A) Normalized UV-vis absorption profiles for neat L8-BO solution and L8-BO blended with PDINN, BCP, or Cu-BCP, with a photograph of the corresponding solution shown in the inset. XPS spectra of (B) N 1s element; (C) O 1s element of PDINN, PDINN/BCP, PDINN/Cu-BCP; and (D) Cu 2p element of PDINN vs. PDINN/Cu-BCP.
