A simplicity-guided cocktail approach toward multicolor fluorescent systems

Naren, Gaowa; Li, Shiming; Andréasson, Joakim

doi:10.1039/c9cc10040g

Cited by 18 publications

(20 citation statements)

References 44 publications

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Section: Changes In the Physical And Chemical Properties Of Daementioning

confidence: 99%

“…Andréasson et al. [ 184 ] reported a two‐color fluorescence system regulated by different DAE switches (Figure 8d). They used two DAE compounds that they called Dasy (DAE asymmetric) and DAE9 [ 185 ] in the original text.…”

Section: Changes In the Physical And Chemical Properties Of Daementioning

confidence: 99%

“…All spectra recorded upon excitation at 410 nm after exposure to 381 nm light for 0 s (green line) to 350 s (red line). d) Reproduced with permission [184]. Copyright 2020, The Royal Society of Chemistry.…”

mentioning

confidence: 99%

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Future‐Oriented Advanced Diarylethene Photoswitches: From Molecular Design to Spontaneous Assembly Systems

et al. 2022

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cycloreversion of DAE under light irradiation produces many exciting functional effects, such as changes in photophysical and photochemical properties, [12] changes in the shape or mechanical properties of the solid, [13] electrical conductivity, [7b,14] and the generation of reactive oxygen species (ROS). [15] This type of photochromic compound can be considered a stilbene derivative. At this time, the most widely known and systematically studied DAE derivative structure contains two aryl groups and a benzene ring (usually two identical or different thiophene units with low aromatic stabilization energy [16] ) and a five-membered ring of perfluorocyclopentene and cyclopentene units [17] where the ethene bridge is located, which significantly improve photochromism. [18] In essence, the DAE photoisomerization process is a reversible electrocyclic reaction of the central 6π-electron systems. [2] Under light irradiation, DAE can rapidly and reversibly transform between its open and closed forms, and that transformation is accompanied by a color change caused by a change in the π-conjugation distribution. [2] The important thing is that the colorless opened-and colored closed-ring isomers are both thermally stable; that is, cyclization and cycloreversion do not proceed spontaneously in the dark; they need to be driven by external light irradiation at specific wavelengths. [2,19] Compared with classic lightresponsive molecules such as azobenzene, [20] the light intensity required to drive the isomerization of DAE is relatively low. Moreover, even after multiple cycles, the photochromic performance does not show significant fatigue in either the solution or solid state. [2,18b,21] DAE research to this point can be roughly divided into three stages in chronological order: early exploration of DAE's molecular structure and theory, nearly two decades of purpose-oriented molecular structure modification research, and about ten years of research into practical applications of DAE in assembly systems. Research before about 2000 focused mainly on developing more abundant DAE-derivative structures and advancing the systematic understanding of DAE's physical and chemical properties and switching performance. To regulate its switching performance and give it new functionality, many strategies for modifying the ethene bridge and aryl groups of DAE have been proposed. [22] In the first two research stages, the mechanisms and structural modification of DAE isomerization were thoroughly and systematically explored, and countless important Diarylethene (DAE) photoswitch is a new and promising family of photochromic molecules and has shown superior performance as a smart trigger in stimulus-responsive materials. During the past few decades, the DAE family has achieved a leap from simple molecules to functional molecules and developed toward validity as a universal switching building block. In recent years, the introduction of DAE into an assembly system has been an attractive strategy that enables the photochromic behavior of the b...

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Section: Changes In the Physical And Chemical Properties Of Daementioning

confidence: 99%

Section: Changes In the Physical And Chemical Properties Of Daementioning

confidence: 99%

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Future‐Oriented Advanced Diarylethene Photoswitches: From Molecular Design to Spontaneous Assembly Systems

et al. 2022

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“…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.…”

Section: Absorbs λmentioning

confidence: 99%

An All-Photonic Molecular Amplifier and Binary Flip-flop

MacDonald

Schmidt

Beves

2021

J. Phys. Chem. Lett.

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A chemical system is proposed that is capable of amplifying small optical inputs into large changes in internal composition, based on a feedback interaction between switchable fluorescence and visible-light photoswitching. This system would demonstrate bifurcating reaction kinetics under irradiation and reach one of two stable photostationary states depending on the initial composition of the system. This behavior would allow the system to act as a chemical realization of the flip-flop circuit, the fundamental element in sequential logic and binary memory storage. We use detailed numerical modeling to demonstrate the feasibility of the proposed behavior based on known molecular phenomena, and comment on some of the conditions required to realize this system. File list (2)download file view on ChemRxiv amplifier.pdf (871.72 KiB) download file view on ChemRxiv TOC.pdf (400.35 KiB)

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