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. 2016 Dec 21;7:13934. doi: 10.1038/ncomms13934

Figure 4. Photo-induced and transient absorption.

Figure 4

Photo-induced absorption spectra (a) and transient absorption spectra (b) of LEG4-sensitized TiO2 employing four different electrolytes: inert (0.1 M LiClO4, 0.2 M 4-tert butylpyridine (TBP)), TPAA (0.1 M TPAA, 0.1 M LiClO4, 0.2 M TBP), Co (0.1 M LiClO4, 0.2 M TBP, 0.22 M Co(bpy)3(PF6)2 and 0.05 M Co(bpy)3(PF6)3) and TPAA/Co (0.1 M TPAA, 0.1 M LiClO4, 0.2 M TBP, 0.22 M Co(bpy)3(PF6)2, and 0.05 M Co(bpy)3(PF6)3 ). The transient absorption spectra were acquired after ∼10 ns following the excitation of a 600 nm laser pulse with an intensity ∼0.15 mJ to 0.25 mJ cm−2.