Vibration-induced emission: Dynamic multiple intrinsic luminescence

Conformational isomeric thermally activated delayed fluorescence (TADF) emitters: mechanism, applications, and perspectives

“…Therefore, the overall properties are actually determined by their combined effect. 34–38 It is noteworthy that, unlike the mechanisms of excited-state intramolecular proton transfer (ESIPT), 39–42 vibration-induced emission (VIE), 43–45 and twisted intramolecular charge transfer (TICT), 46–50 which are all caused by photophysical properties in excited states, conformational isomerism is a phenomenon that naturally occurs in the ground states.…”

Multiple Flexibilities Trigger Luminescent Piezochromism of Closely Packed Cu(I) Coordination Polymers

“…The luminescence or apparent colors of probe molecules display response to the external stimuli such as light, [ 1,2 ] heat, [ 3 ] pressures, [ 4,5 ] gases, [ 6,7 ] solvents, [ 8,9 ] and so on, which is strongly related to the structural change and charge/electron transfer in the response process. [ 10–12 ] Especially, for compounds with piezochromic property, applied pressure affects the molecular packing and conformation of the materials, usually resulting in the redshift or quenching luminescence. [ 13,14 ] Luminescent pressure sensors have attracted many attentions for the essential application in polychromatic anticounterfeiting, [ 15 ] data processing, [ 16 ] and so on.…”

Tailor-Made Dynamic Fluorophores: Precise Structures Controlling the Photophysical Properties

“…Due to limited space, luminescence mechanisms and applications related to these molecules will not be included, and the details on these aspects are available in previous perspectives and reviews. 3,4,11 ■ SYNTHETIC METHODOLOGIES TO ACCESS…”

“…Organic fluorophores with dynamic conformations in the excited state are fascinating molecules with respect to their unique photophysical properties and versatile functions. − Among them, the bent-to-planar excited-state dynamics have been reported in conjugated 8π-electron systems, such as sterically hindered dihydrophenazines, , cyclooctatetraenes, , and oxepins. , The changes of molecular conformations in the excited state have created unique photophysical properties, such as a large Stokes shift, dual emission, and environment-dependent fluorescence, for use in various applications such as ratiometric fluorescent probes, stimulus-responsive materials, and white organic light-emitting diodes. , …”

“…This Perspective aims to provide insights into the structure–property relationships by giving examples of tailor-made molecular structures in association with the photophysical properties. Due to limited space, luminescence mechanisms and applications related to these molecules will not be included, and the details on these aspects are available in previous perspectives and reviews. ,, …”