Structural and Surface Characterization of Newly Synthesized D-π-D Type Schiff Base Ligand: (1E,2E)-3-[4-(Dimethylamino)phenyl]prop-2-en-1-ylidene)phenylamine

Table 1

The adsorption energy of a methylene group, Δ𝐺_𝐴[CH2], the surface free energy of a surface consisting of methylene groups, 𝛾_𝐿[CH2] and dispersion component of surface free energy, 𝛾^𝐷_𝑆, values calculated by the Dorris-Gray and the Fowkes approaches for 𝐿 determined at studied temperatures.

𝑇 (K)	𝛾𝐿[CH2]; (mJ/m^2)	Δ𝐺𝐴[CH2]; (10^6 mJ/mol)	Dorris-Gray 𝛾^𝐷𝑆 (mJ/m^2)	Slope (×10^24)	Fowkes; 𝛾^𝐷𝑆 (mJ/m^2)
303	35.02	2.25	27.80	6.33	27.65
313	34.44	2.12	24.95	6.17	26.23
323	33.86	2.02	23.19	6.06	25.36
333	33.28	1.87	20.09	5.78	23.08