variations (Table 1), although somewhat less bright and less
impressive than the parent compound (Figure 4). The color
transition was very sharp, and, provided that the spot was large
enough and the support was thick, a color-changing front could
often be seen propagating through the surface of the material,
starting from the outer edges where the solid warmed faster
(Figure 3C, see the Supporting Information for a videoclip).
A standard TLC-viewing lamp worked perfectly as a source
of long-wave UV light, as the sample spread on paper could be
very small. Nevertheless, if desired, much larger samples could
be prepared and displayed to the students in dimmed light,
using a large Wood’s lamp (as those used in discos, λmax ∼ 366
nm) suspended with clamps above a black background (e.g., a
cloth, see Figure S1 in the Supporting Information).
variations (Table 1), although somewhat less bright and lessimpressive than the parent compound (Figure 4). The colortransition was very sharp, and, provided that the spot was largeenough and the support was thick, a color-changing front couldoften be seen propagating through the surface of the material,starting from the outer edges where the solid warmed faster(Figure 3C, see the Supporting Information for a videoclip).A standard TLC-viewing lamp worked perfectly as a sourceof long-wave UV light, as the sample spread on paper could bevery small. Nevertheless, if desired, much larger samples couldbe prepared and displayed to the students in dimmed light,using a large Wood’s lamp (as those used in discos, λmax ∼ 366nm) suspended with clamps above a black background (e.g., acloth, see Figure S1 in the Supporting Information).
การแปล กรุณารอสักครู่..
