Fig. 2: The dynamics of the structural transformation of 1.
a The normalized optical transmission spectra of the single crystal of 1 before (initial state, green curve) and during the ST (excited state, red curve), stimulated by laser heating (1050 nm, 150 fs). Inset: linear dependence of the spectral shift on the pumping laser power. b The dynamics of the ST expressed as the evolution of the intensity of 600 nm probing laser light passing through the single crystal of 1 during the ST, stimulated by a single laser pulse (1064 nm, 100 ns pulse duration). Inset: the scheme of the laser pump-probe spectroscopy. c Long-term stability of single crystal of 1 at ambient conditions (air atmosphere, room temperature and humidity) during 104 cycles of the ST, stimulated by laser-induced heating (1050 nm as a pump with a fluence of 3.6 mJ cm−2; and 600 nm as a probe). Green curve—initial state; red curve—excited state (during the ST).
