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. Author manuscript; available in PMC: 2011 Nov 17.
Published in final edited form as: J Am Chem Soc. 2010 Oct 21;132(45):16043–16051. doi: 10.1021/ja104999v

Figure 3.

Figure 3

Structures and energetics associated with stilbene photochemistry and photophysics. (A) Perpendicular singlet excited state (1P*) conformation required for the trans to cis photoisomerization of stilbenes. (B) Relative energies of the ground (S0) and excited singlet states (S1) of stilbenes as a function of their conformation (c, cis isoform; t, trans isoform) in solution (black S1 curve) or when the stilbenes are bound to TTR (red S1 curve), wherein the perpendicular singlet excited state (1P*) and the cis singlet excited state (S1) are strongly destabilized by the constraints imposed by the TTR binding site.