A color-tunable single molecule white light emitter with high luminescence efficiency and ultra-long room temperature phosphorescence

Abstract

A simple emitter could simultaneously achieve bright white light emission with high quantum yield, ultra-long phosphorescence and excitation-dependent color-tunable emission.

Tunable fluorescence emission for multi-color light-emitting diodes and voice-activated intelligent lighting applications

“…Moreover, many tunable fluorescent emission organic molecules for multi-color emitters, as well as white-light emitters, have been constructed, such as ratio responsive luminescent materials, 16 fluorescence–phosphorescence hybrid dual emission materials, 17,18 dual emission materials with fluorescence and thermal activation delayed fluorescence (TADF) characteristics, etc. 19 For instance, Li and coworkers reported a single-molecule white-light emitting hydrogel which exhibited multicolor emission due to its high sensitivity to H + and temperature.…”

Stimuli-Responsive Self-Assembly of π-Conjugated Liquids Triggers Circularly Polarized Luminescence

“…Stimuli-responsive liquids (SRLs) with luminescent π-conjugated frameworks are significant research targets for the development of novel functional soft materials. − In the past decade, stimuli-responsive luminescent solid-state materials have remarkably increased in number and have become a major subject for research in the area of materials science. − In addition, SRLs exhibit great potential for providing us with new material designs and findings that can be difficult to achieve using solid-state materials. SRLs can be easily applied in a solvent-free manner on various substrates for application in security tags, sensors, and memories. , In this study, we develop, for the first time, novel liquid materials that can actively control on/off properties for circularly polarized luminescence (CPL) using an external stimulus with the aim of achieving higher information encryption.…”

Stimulus-Responsive Supercooled π-Conjugated Liquid and Its Application in Rewritable Media

“…For certification and confirmation of messages in a matter of seconds like in a spy movie, it is desirable for the system to delete them completely just after they have been accessed, which is one of the powerful ways to make highly secure materials. As for solid state materials, rewritable use in response to external stimuli demands large amounts of energy such as high temperature, high pressure, etc. − In this study, we develop a novel metastable fluorescent liquid that can be applied to rewritable media (Scheme ). Like the case for solid state materials, skillful molecular design can yield room-temperature liquids that can be kinetically trapped in a supercooled liquid state on cooling, which leads to their transformation into a thermally stable state with external stimuli. ,,,, …”