Photodynamic Efficiency of Xanthene Dyes and Their Phototoxicity against a Carcinoma Cell Line: A Computational and Experimental Study

Figure 4

Molecular electrostatic potential of each xanthene dye (isovalue of 0.0004 a.u.). The right-side view shows the front of the solid surface, and the left-side view shows the back of the surface and displays its molecular disposition. The regions in red refer to areas with an electrophilic character, while the regions in blue are areas with a nucleophilic nature. A different case is the area in green which is related to neutral regions.

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