Fig. 5.From: Enzymatic synthesis of a novel solid–liquid phase change energy storage material based on levulinic acid and 1,4-butanediol1H NMR and 13C NMR spectra of LBE (A 1; 2; 3; 4; 5 for different hydrogen labeling and chemical structure corresponding to the position. B 1;2;3;4;5;6;7 for different carbon labeling and chemical structure corresponding to the position)Back to article page