Fig. 4: Investigation for the ICT-Self-assembly mechanism enabling photochromic fluorescence of PMC in CHCl3 solution.
From: An ultrawide-range photochromic molecular fluorescence emitter
a Absorption at 500 nm of PMC from 0.0001 mM to 0.1 mM. b Normalized fluorescence spectra of PMC with concentration from 0.1 mM, 0.07 mM, 0.04 mM, 0.03 mM, 0.02 mM, 0.01 mM, 0.001 mM, and 0.0001 mM in chloroform (from top to bottom, λex = 365 nm). c Optical transmittance at 625 nm of PMC from 0.0001 mM to 0.1 mM. d SEM image of PMC (0.1 mM). e The 640 nm emission, 400 nm emission, and the ratio of the two emission intensities (I400/I640) of PMC in different concentration. f, g The CIE 1931 chromaticity diagram, and fluorescence images of PMC in different concentration. (λex = 365 nm).
