Polymethine Dye as Sensors of NH₃ and CO

Table 3

The binding energy of the NH₃ and CO molecules in the associate with the PMD molecule (position 2).

PMD molecule	Binding energy of the NH3, eV	Binding energy of the CO, eV
PMD-I	0.33	0.14
PMD-II	0.32	0.13
PMD-III	0.34	0.14
PMD-IV	0.35	0.14
PMD-V	0.23	0.09
PMD-VI	0.23	0.11
PMD-VII	0.23	0.11
PMD-VIII	0.24	0.11