Multi-Color Emission with Orthogonal Input Triggers from a Diarylethene Pyrene-OTHO Organogelator Cocktail

Abstract

<div><div><div><p>Controlling spectral and physicochemical properties with external stimuli is vital for the development of smart materials. Here we demonstrate a supramolecular gelator based on a fluorescent oxotriphenylhexanoate (OTHO) that can switch emission profiles between the solution and gel phase. Furthermore, a cocktail of the gelator and a photochromic diarylethene derivative enables four distinct emissive states to be obtained, which are modulated with light and heat as orthogonal input triggers.</p></div></div></div>

An All-Photonic Molecular Amplifier and Binary Flip-flop

“…We propose a photoswitchable molecular system that also demonstrates photoswitchable light emission. [38][39][40][41][42][43][44][45][46][47][48] External irradiation λ ex would be absorbed and re-emitted by each species with an emission spectrum that is preferentially re-absorbed by the other isomer. A schematic example of this feedback concept is shown in Figure 1 for two dye functionalities substituted onto an E/Z photoswitch core 49 in which E → Z photoisomerization leads to red-shifted excimer emission.…”