Figure 3.

Polarized Transient Absorption Spectra of Hexacene Single Crystal

(Left) Pseudo-color plots of polarized transient absorption spectra from hexacene single crystal excited at 795 nm along the b crystalline axis and probing along the b axis (A and B) and along the a axis (C and D). Note that the color scales for (B) and (D) (ground state bleaching, 620 nm–738 nm) and (A) and (C) (excited state absorption, 500 nm–626 nm) are comparison sake. For a better contrast, the color scale for (D) has been multiplied by 1.75. (Right) Transient absorption spectra at several time delays probing the b axis (E) and along the a axis (F).