Water-stimuli-responsive dynamic fluorescent switch from Kasha's rule to anti-Kasha's rule based on a tetraphenylethene substituted Schiff base

Synthesis and Aggregation‐Induced Emission of Polyamide‐Amines as Fluorescent Switch Controlled by Hg2+‐Glutathione

“…However, as the excitation wavelength was increased from 360 nm to 420 nm, the emission wavelengths gradually moved towards the long‐wavelength region with a decreasing intensity (Figure 2d). At this point, PMPBAP luminescence does not comply with Kasha′s rule [34–36] . The emission wavelength or emission spectrum appears red shift with the increase of excitation wavelength.…”

“…At this point, PMPBAP luminescence does not comply with Kasha's rule. [34][35][36] The emission wavelength or emission spectrum appears red shift with the increase of excitation wavelength. This phenomenon originates from the clusters with different aggregated structural units of PMPBAP, which conforms to the general characteristics AIE.…”

Water molecular bridge-induced selective dual polarization in crystals for stable multi-emitters

“…4b ). The excited-state intermolecular proton-transfer process can be explored based on the secondary excited-state absorption signal 14 growing on the picosecond scale (see the transient absorption measurements in Fig. S15 † ) and the results of quantum-chemical calculations (Fig.…”

Reversible On–Off Switching of Excitation-Wavelength-Dependent Emission of a Phosphorescent Soft Salt Based on Platinum(II) Complexes

“…24 In this context, different Ex-De luminescent materials have been developed based on small molecules, 25−28 metal complexes, 18,29−31 upconversion nanoparticles, 32 carbon dots, 33 and polymers. 34−37 These configurations exploit various strategies including anti-Kasha's rule, [25][26][27]30 excited state intramolecular proton transfer, 24,31 twisted intramolecular charge transfer, 38 multiemission centers, 28,34 and isolatedaggregation emission. 37 Although great advancements have been made in this area recently, the on-demand regulation of Ex-De emission behavior is still unprecedented.…”

“…Among these types of optical materials, excitation-wavelength-dependent (Ex-De) luminophores have attracted particular interest. − This is due to the facile, fast, and noninvasive manipulation of their luminescence color by varying the excitation energy; such systems demonstrate great promise in bioimaging and anticounterfeiting applications . In this context, different Ex-De luminescent materials have been developed based on small molecules, − metal complexes, ,− upconversion nanoparticles, carbon dots, and polymers. − These configurations exploit various strategies including anti-Kasha’s rule, − , excited state intramolecular proton transfer, , twisted intramolecular charge transfer, multiemission centers, , and isolated-aggregation emission . Although great advancements have been made in this area recently, the on-demand regulation of Ex-De emission behavior is still unprecedented.…”