Research Article
DFT/TDDFT and Experimental Studies of Natural Pigments Extracted from Black Tea Waste for DSSC Application
Figure 1
Molecular structure of black tea pigments: (a) theaflavin (TF), (b) theaflavin-3-gallate (T3G), (c) theaflavin-3′-gallate (T3′G), and (d) theaflavin Digallate (TDG).