However, as the percentage of DMSO was increased to 40 vol%, the coverage of the film surface showed a decreasing trend (Figures 3d,h ), so 33 vol% DMSO added to DMF was finally selected as the optimal solvent ratio.
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However, as the percentage of DMSO was increased to 40 vol%, the coverage of the film surface showed a decreasing trend (Figures 3d,h ), so 33 vol% DMSO added to DMF was finally selected as the optimal solvent ratio.