Fig. 4: Photoresponsive property of DETPA and DiPTPA crystals.
From: Photochromic luminescence of organic crystals arising from subtle molecular rearrangement
a–c Luminescent photographs (a) and prompt emission spectra (b, c) of PL transformation process of DETPA and DiPTPA crystals under 312 nm UV irradiation with different exposure time. Φ is the quantum efficiency of total emission of the sample. d, e FTIR spectra of DETPA (d) and DiPTPA (e) crystals with different exposure time under 312 nm UV irradiation. f Single crystal structure and fragmental molecular packing of DETPA and DiPTPA. Source data are provided as a Source Data file.
