Figure 5

(a,b) Penetration depth-dependent light intensity profile. (c,d) Penetration depth-dependent population of ground closed ring isomer. (Ground open ring isomer occupies the rest of closed ring population).

(a,b) Penetration depth-dependent light intensity profile. (c,d) Penetration depth-dependent population of ground closed ring isomer. (Ground open ring isomer occupies the rest of closed ring population).