Luminescence Photoswitching of Colloidal CsPbBr<sub>3</sub> Nanocrystals by Photochromic Diarylethene Ligands

Mokhtar, Ashkan; Morinaga, Ryuki; Akaishi, Yuji; Koinuma, Michio; Kim, Sunnam; Kurihara, Seiji; Kida, Tetsuya; Fukaminato, Tuyoshi

doi:10.1246/cl.210254

Cited by 5 publications

(2 citation statements)

References 36 publications

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“…The open-ring isomer of DAE underwent cyclization under UV light and quickly turned off the green emission of printed pattern, while the green emission can be switched on again by exposing the pattern to visible light for DAE cycloreversion (Figure 6a). Similar photochromic behavior was reported for DAE derivative whose triethoxysilane (TEOS) moiety is altered by alkyl amine [90]. Following this strategy, a majority of photochromic molecules may be introduced as the surfactant to achieve the photochromism of perovskite QDs/NCs.…”

Section: Photochromismsupporting

confidence: 53%

Halide Perovskites as Emerging Anti-Counterfeiting Materials Contribute to Smart Flow of Goods

Zhou¹,

Xie²,

Hou³

2023

Smart Mobility - Recent Advances, New Perspectives and Applications

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The counterfeiting of goods is a fast-growing issue worldwide, being a risk to human health, financial safety, and national security. Customized anti-counterfeiting patterning technologies enable unclonable tags on products, which ensure the reliable and convenient flow of goods such as daily foods, prescription medicines, and value-added components. In this chapter, we start with the introduction of recent advances of anti-counterfeiting technologies that generate unique physical tags on products for encryption and information storage. Various halide perovskite-based materials and their fabrication techniques for unreplicable luminescent patterns are then discussed, with a particular focus on the intelligent encoding principles that correlate with the chromism and other special optical readout of materials. The multilevel anti-counterfeiting functions that allow high-throughput authentication of products within a single tag are also exemplified, through which the increasing security demands can be fulfilled. We finally discuss the current issues encountered by perovskite anti-counterfeiting technologies and outline their future directions toward smarter and safer flow of goods.

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Section: Photochromismsupporting

confidence: 53%

Halide Perovskites as Emerging Anti-Counterfeiting Materials Contribute to Smart Flow of Goods

Zhou¹,

Xie²,

Hou³

2023

Smart Mobility - Recent Advances, New Perspectives and Applications

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“…Furthermore, photoswitching at the single‐particle level was achieved by covering the surface of the individual NC with amine‐terminated DAE ligands. [ 24 ] Although high‐contrast PL photoswitching was established, the system was not stable, and the PL intensity in the ON state gradually decreased after a few ON/OFF cycles. The degradation of photoswitching has been reported, even for highly stable CdSe NCs.…”

Section: Introductionmentioning

confidence: 99%

Light‐Stimulated Luminescence Control of Lead Halide‐Based Perovskite Nanocrystals Coupled with Photochromic Molecules via Electron and Energy Transfer

Akaishi

Mokhtar

Shimoyoshi

et al. 2022

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Photoswitchable nanomaterials are key materials in the development of advanced imaging techniques, such as super‐resolution fluorescence microscopy. The combination of perovskite CsPbBr3 nanocrystals (NCs) with bright photoluminescence (PL) emission and diarylethenes (DAEs) with structural changes in response to ultraviolet (UV) and visible light is a promising candidate system. Herein, CsPbBr3 NCs are coupled with photochromic DAE molecules to control the PL emission from the NCs by light stimulation. The PL emission is successfully switched ON and OFF by alternating UV and visible light irradiation. Time‐resolved PL emission studies suggest that Förster resonance energy transfer from CsPbBr3 NCs to the closed‐ring form of DAE occurs after UV irradiation, and the PL emission is quenched. Upon visible‐light irradiation, DAE is converted to the open‐ring isomer, and the PL emission is restored. Femtosecond pump‐probe spectroscopy reveals that light stimulation induces not only energy transfer but also photoinduced electron transfer in the NC‐DAE pair on the picosecond timescale to form DAE radicals. Thus, it is suggested that the holes residing in the NCs react with the NCs, degrading the PL emission. Stable PL switching is realized using 2,2,6,6‐tetramethylpiperidine‐1‐oxyl (TEMPO) as a hole scavenger to avoid the reaction between the holes and NCs.

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Investigation on luminescence photoswitching stability in diarylethene-perovskite quantum dot hybrids

Mokhtar,

Akaishi,

Tokudome

et al. 2024

Photochem Photobiol Sci

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Luminescence Photoswitching of Colloidal CsPbBr₃ Nanocrystals by Photochromic Diarylethene Ligands

Cited by 5 publications

References 36 publications

Halide Perovskites as Emerging Anti-Counterfeiting Materials Contribute to Smart Flow of Goods

Halide Perovskites as Emerging Anti-Counterfeiting Materials Contribute to Smart Flow of Goods

Light‐Stimulated Luminescence Control of Lead Halide‐Based Perovskite Nanocrystals Coupled with Photochromic Molecules via Electron and Energy Transfer

Investigation on luminescence photoswitching stability in diarylethene-perovskite quantum dot hybrids

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Luminescence Photoswitching of Colloidal CsPbBr3 Nanocrystals by Photochromic Diarylethene Ligands

Cited by 5 publications

References 36 publications

Halide Perovskites as Emerging Anti-Counterfeiting Materials Contribute to Smart Flow of Goods

Halide Perovskites as Emerging Anti-Counterfeiting Materials Contribute to Smart Flow of Goods

Light‐Stimulated Luminescence Control of Lead Halide‐Based Perovskite Nanocrystals Coupled with Photochromic Molecules via Electron and Energy Transfer

Investigation on luminescence photoswitching stability in diarylethene-perovskite quantum dot hybrids

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Product

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Luminescence Photoswitching of Colloidal CsPbBr₃ Nanocrystals by Photochromic Diarylethene Ligands