Fig. 3: Thermal cyclization of Z-CDPM.
From: A chameleon AIEgen exhibiting six distinct yet tunable thermal and photoswitchable states
a 1H NMR spectra of as prepared Z-CDPM before and after heating at 145 °C in C2D2Cl4 (500 MHz) for different times (1, 5, 12, 20, and 30 d). Z-CDPM was highlighted in purple, E-CDPM was highlighted in orange, and DPXDC was highlighted in green. b Chemical and single-crystal structures of DPXDC. c X-ray diffraction (XRD) diffractograms of the crystal powder of DPXDC. Inset: photograph of crystals of DPXDC taken under UV illumination. Scale bar: 2 mm. d Absorption spectra of DPXDC (10 μM) in THF. Inset: photograph of crystals of DPXDC taken under day light. Scale bar: 2 mm. e Photoluminescence (PL) spectra of DPXDC (10 μM) in THF/water mixtures with different water fractions (fw, 0 and 99%). λex = 365 nm.
