. Author manuscript; available in PMC: 2011 Apr 9.

Published in final edited form as: Chem Phys Lett. 2010 Apr 9;489(4-6):175–180. doi: 10.1016/j.cplett.2010.02.071

Table 1.

Properties of the ring-opening reaction of the three indolylfulgide compounds. The steady-state ring-opening quantum efficiency η_O, excited state life time τ_S1, energy barriers for the photochemistry and internal conversion pathway E_A,PC and E_A,IC and pre-exponential factors A_PC and A_IC are listed for the fulgides at 302 K in the solvent 1,4-dioxane. The quantum efficiency after pre-excitation η_max was averaged between Δt₁ = 1.5 – 2.3 ps, the enlargement factor α = η_max/η_O and the decay time constant of the quantum efficiency after pre-excitation τ_η are also given.

	fulgide 1 [21]	fulgide 2 [11]	fulgide 3 [23]
η_O (%)	3.7	11.6	2.5
τ_S1 (ps)	9	3.8	14
E_A,PC (cm⁻¹)	1055	675	1030
E_A,IC (cm⁻¹)	375	180	275
A_PC (ps-1)	0.63	0.80	0.25
A_IC (ps-1)	0.63	0.55	0.26
η_max (%)	12.2	39.9	4.8
α = η_max/η_O	3.3	3.4	1.9
τ_η (ps)	6.3	10.0	5.8