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. Author manuscript; available in PMC: 2008 Aug 31.
Published in final edited form as: J Phys Chem B. 2006 Sep 14;110(36):17931–17940. doi: 10.1021/jp060757y

Figure 6.

Figure 6

Photoinduced transient displacement current signals for the two forms of coumarin in toluene solution measured by the standard PTDC technique. Top: coumarin-A; bottom: carboxamide analogue, coumarin-B. The signals (solid lines) were measured with 22 μJ of absorbed laser energy at 416 nm in a cell with 600 V applied across the 0.65 mm gap between the electrodes. The best-fit signals (points) were calculated with the rotation time of 0.2 ns and the ground state dipole moments presumed zero. The excited state dipole moment values (equivalent to (Δμ2)1/2 of Equation (17)) were 10.8 D and 11.9 D, respectively.