217932.fig.0013
Figure 13: UV spectra of 2,4-dichlorophenol in TBA as a function of temperature: 298 K (1), 223 K (2), 203 K (3), 186 K (4), 165K (5), 143 K (6), 128 K (7). 𝐶 = 4 × 1 0 4  mol dm−3, 𝑑 = 5  mm, wavenumber of PT form 32160 cm−1 and HB form 33840 cm−1 [29].