Cucurbit[8]uril-induced diarylethene thermally activated delay fluorescence supramolecular switch for sequential energy transfer

Wang, C.; Liu, Yu

doi:10.1016/j.mtchem.2022.100954

Cited by 5 publications

(3 citation statements)

References 27 publications

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“…To this end, the multivalent supramolecular assembly of SC4A/TPA provides a good platform for constructing light-controllable luminescence assembly. Dicationic diarylethene derivative (DE) [25] was selected as the photo-switch unit, which exhibited good reversible photoisomerization performance (Figure S16, Supporting Information) and could co-assemble with the SC4A/TPA to form the photo-stimulus supramolecular assembly. First, we investigated the absorption band of DE to evaluate the potential of which acts as a switch of the NIR emitting system.…”

Section: Resultsmentioning

confidence: 99%

Supramolecular Two‐Photon Switch for Near‐Infrared (NIR) Cell Imaging

Yu,

Niu,

Wang

et al. 2023

Advanced Optical Materials

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A light controllable two‐photon near‐infrared (NIR) optical probe is conveniently constructed by multivalent supramolecular co‐assembly of amphiphilic sulfonatocalix[4]arene (SC4A), tricationic triphenylamine (TPA), and diarylethene derivative (DE). The obtained results indicate that the formed SC4A/TPA nanoparticle displays assemble‐confined behaviors and enhances the two‐photon excited NIR emission. Benefiting from the reversible ring‐opened and closed behaviors of the DE under 365 and > 600 nm light irradiation, the dicationic DE in the assembly could act as an energy acceptor after 365 nm light irradiation, then the co‐assembly of SC4A/TPA/DE could achieve a NIR fluorescence ON and OFF switch and is successfully applied in HeLa cell imaging, providing a convenient approach to supramolecular two‐photon switch for cell imaging.

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Section: Resultsmentioning

confidence: 99%

Supramolecular Two‐Photon Switch for Near‐Infrared (NIR) Cell Imaging

Yu,

Niu,

Wang

et al. 2023

Advanced Optical Materials

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“…So far, only one example of TADF-based photochromic switching has been reported. 32 Therefore, developing efficient visible light-controlled DTE systems with multi-mode TADF characteristics is highly desirable for photoelectric applications, but remains a severe challenge.…”

Section: Introductionmentioning

confidence: 99%

Green-/NIR-light-controlled rapid photochromism featuring reversible thermally activated delayed fluorescence and photoelectronic switching

Zhang

Tian

et al. 2022

Chem. Sci.

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“…Therefore, it is very significant but greatly challenging to develop a visible-light-induced DAE molecular switch in both directions. Among adoptive strategies in previous works, such as energy transfer, − multiphoton absorption, electron transfer, , intramolecular proton transfer, and host–guest complexation − to realize visible or near-infrared (NIR)-light photochromism, the simplest one involves modifying aromatic groups on the central hexatriene skeleton to expand π-conjugation systems for shifting the absorption bands of the open form of DAEs in visible or NIR regions . Nevertheless, for a majority of diarylethene derivatives with aromatic dyes at the side location, their visible-light reactive activation was apparently restrained because the extension of π-conjugation did not effectively enhance the contribution of the excited singlet state of the central hexatriene section. , It is imperative to seek a universal method for constructing dual visible-light-switched DAEs through simple chemical modifications.…”

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confidence: 99%

Conformational Restriction-Induced Dual Visible Light-Switched Diarylethene Fluorochrome by Composite Films

Liu

Tian

et al. 2023

ACS Materials Lett.

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Precise design of photoactive molecules that switch reversibly upon visible-light irradiation is beneficial to develop photosensitive intelligent luminescence materials applied in biological imaging and anticounterfeiting. Herein, we designed a photochromic molecular switch (DAE-BTS) that incorporated cleverly two photoactive groups i.e. diarylethene (DAE) and benzothiazole thiophene styrene (T-BTS) via a π-extended conjugation strategy. T-BTS was undoubtedly identified as a new photo/thermo-controlled molecular switch through some standard characterizations in this work. Interestingly, when T-BTS was connected to the DAE skeleton, its photo/thermos-isomerization activation was restrained. On the contrary, incorporation of two T-BTS sections into the DAE skeleton did not affect photochromism of DAE. Hence, DAE-BTS not only possessed photochromic distinguishing feature but also maintained aggregation-induced emission enhancement characteristic. Moreover, poly(methyl methacrylate) (PMMA) and polypropylene (PP) were first innovatively integrated to form a solid-state composite film, which can supply adaptive nanopores as accommodations for DAE-BTS. The resultant luminescence film DAE-BTS/PMMA–PP exhibited much stronger solid-state fluorescence than DAE-BTS in only PMMA or PP film. Crucially, the formation of the DAE-BTS/PMMA–PP film drove DAE-BTS from the free rotating state to the restricted rotating state. This conformation-constrained strategy further achieved visible light-induced cyclization reaction of the DAE, and then the solid-state fluorescence switch was reversibly controlled by dual visible light, which might be applied in light-recording and anticounterfeiting. The study provided theoretical guidance to accurately design and prepare visible-light-activated DAE derivatives in both directions and optically modulated photoluminescence materials with excellent performance.

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Cucurbit[8]uril-induced diarylethene thermally activated delay fluorescence supramolecular switch for sequential energy transfer

Cited by 5 publications

References 27 publications

Supramolecular Two‐Photon Switch for Near‐Infrared (NIR) Cell Imaging

Supramolecular Two‐Photon Switch for Near‐Infrared (NIR) Cell Imaging

Green-/NIR-light-controlled rapid photochromism featuring reversible thermally activated delayed fluorescence and photoelectronic switching

Conformational Restriction-Induced Dual Visible Light-Switched Diarylethene Fluorochrome by Composite Films

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