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. Author manuscript; available in PMC: 2012 Jul 9.
Published in final edited form as: Langmuir. 2012 Feb 3;28(6):3227–3238. doi: 10.1021/la205002f

Figure 8.

Figure 8

Transient absorption spectra of (a) the SAP2N-PZnPI peptide (chromophore/peptide helix mole ratio of 1:4 in 50 mM phosphate buffer with 2.2 wt% OG, and (b) PZnPI in DMSO solvent, recorded at the labeled time delays. Experimental conditions: temperature = 20 °C; (a) λex = 560 nm, (b) λex = 601 nm. Exemplary transient decay kinetics measured at 719 nm for the (c) SAP2N-PZnPI peptide (chromophore/peptide helix mole ratio of 1:4) and (d) PZnPI in DMSO solvent. Insets to panels (c) and (d) display summaries of the respective proposed ET dynamics determined from global fitting of transient data acquired over the vis-NIR spectral domain (SAP2N-PZnPI: τCS = 300 fs, τCR = 78 ps; PZnPI in DMSO: τCS = 1.2 ps, τCR = 4.6 ps).