Detailed Molecular Dynamics of the Photochromic Reaction of Spiropyran: A Semiclassical Dynamics Study

Figure 2

Changes in (a) the dihedral angles 𝛼, 𝛽, 𝛾, and 𝜏; (b) 𝛼, 𝜏, and 𝜃; (c) C₁–C₂ and C₃–C₆ bond lengthens of cis-SP subjected excitation by a 80 fs (FWHM) laser pulse with a fluence of 0.188 kJ/m² and photon energy of 4.054 eV.

(a)

(b)

(c)