Photonic crystal induced multi-color luminescence of one AIEgen and its dual-mode anticounterfeiting application

Ma, Chenli; Wang, Yu; Wu, Yue; Ren, Jie; Han, Yaqun; Zhang, Shufen; Wu, Suli

doi:10.1016/j.cej.2023.141530

Cited by 9 publications

(3 citation statements)

References 34 publications

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“…When ε = 0% (Figure e,f), the PL at 583 nm located at the blue edge of the reflection wavelength is supposed to be enhanced while the PL at 592 nm is suppressed. According to Fermi’s golden rule, the emissive transition rate of an atomic emitter should be proportional to the DOS. ,,, Thus, the low DOS at the stop band position and high DOS at the band edges suppress and promote emissive transitions of the dye molecules at these wavelengths, respectively. The dim position blue-shifts as ε increases, in line with the blueshift of the reflection wavelength.…”

Section: Results and Discussionmentioning

confidence: 99%

“…For example, Song’s group realized ∼40-fold PL enhancement by matching the reflection and PL wavelengths based on this kind of double-layered structure. The second type of FPCs − with the fluorophores encapsulated into a single PC layer shows remarkable fluorescence suppression when the reflection and the fluorescent wavelengths overlap due to the inhibition of light propagation. For instance, Kim et al realized the fluorescence inhabitation and enhancement of fluorescence of rhodamine B (RhB) by altering the lattice distance inverse opal structures owing to the redistributing of DOS by the PBG.…”

Section: Introductionmentioning

confidence: 99%

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Mechanochromic and Solvomechanochromic Fluorescent Photonic Crystals for Dual-Mode Modulating Fluorescence and Multilevel Anticounterfeiting

Liu,

Ma,

et al. 2024

ACS Appl. Mater. Interfaces

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Fluorescent photonic crystals (FPCs) are ideal candidates for regulating dyes’ fluorescence through their unique photonic band gaps (PBGs). However, challenges, including the lack of dynamic regulation of fluorescence, dye release in solvents, and instability, dramatically limit their practical applications. Here, we report mechanochromic and solvomechanochromic rhodamine B (RhB)-based FPCs with dynamic regulation of photoluminescence (PL) by stretching and swelling, brilliant fluorescent and structural colors, and no release of the RhB in solvents. The FPCs with force/solvent-responsive nonclose-packing structures were fabricated by (1) preparing RhB-silica particles by combining click chemistry and cohydrolysis processes and (2) self-assembling these particles in poly(ethylene glycol) phenyl ether acrylate followed by a photopolymerization. Maximal PL inhibition (37%, stretching strain of 6.8%) and enhancement (150%, swelling time of 8 min) were gained when PBGs and their blue edges are precisely adjusted to the PL peak position, respectively. Compared with stretching, PL regulation is more efficient by swelling. These characteristics benefit from the rational design and combination of unique compositions, chemical bonds, nonclosely packed micro/nanostructures, and solvents for swelling. Moreover, these FPCs have been used to encrypt photonic patterns, which display background/strain/angle/UV-dependent color contrasts, showing their potential applications in multilevel anticounterfeiting, optical devices, wireless sensors, etc.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanochromic and Solvomechanochromic Fluorescent Photonic Crystals for Dual-Mode Modulating Fluorescence and Multilevel Anticounterfeiting

Liu,

Ma,

et al. 2024

ACS Appl. Mater. Interfaces

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“…Compared with colloidal crystal particles, colloidal crystal films have larger scales; therefore, they are more visual and promising in application scenarios. [166][167][168][169][170][171][172][173][174][175][176][177] To date, many strategies have been used for preparing colloidal crystal films, including electrophoresis, [178] vertical deposition, [179][180][181][182] and horizontal deposition. [183,184] Besides, the array of NCP colloidal nanoparticles or colloidal crystal particles can also be fabricated as film shapes.…”

Section: The Fabrication Of Colloidal Crystal Filmsmentioning

confidence: 99%

Bioinspired bioassay platforms derived from colloidal crystals with topological shapes

Wang,

Zhang,

Bian

et al. 2023

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Colloidal crystals are materials self‐assembled from the colloidal nanoparticles. Due to the ordered microstructure, they exhibit significant optical properties and have shown huge potential in the field of biosensing. Besides, the unique macroscopic shapes can also play a critical role in the sensing process. Here, we present a comprehensive discussion on the colloidal crystal‐based biosensors with different topological shapes, including the development strategies of currently reported colloidal crystal particles, films, and fibers, and their recent progress in biosensing. In addition, the faced challenges and the possible solutions are also concluded and discussed. We expect this review can enrich the knowledge and encourage the communication of interdisciplinary researchers, thus promoting the further development and practical applications of colloidal crystal‐based biosensors.

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Advances in Photonic Crystal Research for Structural Color

Chen,

Wei,

Pan

et al. 2024

Adv Materials Technologies

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Structural color is a remarkable physical phenomenon that exists widely in nature. Unlike traditional color rendering methods, they are realized mainly through micro/nanostructures that interfere, diffract, scatter light, and exhibit long‐life and environmental‐friendly color effects. In nature, a few organisms use their color‐changing system to transmit information, such as courtship, warning, or disguise. Meanwhile, some natural inorganic minerals can also exhibit structural colors. Learning from nature, scientists have achieved large‐scale structural color design and manufacturing technology for artificial photonic crystals. Photonic crystals have a unique microstructure that forms a band gap under the action of the periodic potential field, consequently causing Bragg scattering due to the periodic arrangement of different refractive index media within them. Because of the apparent photonic band gap and the ability to form local photons at crystal defects, photonic crystals have been extensively studied in recent years and have broad application prospects in photonic fibers, optical computers, chips, and other fields. In this review, the research, properties, and applications of photonic crystals in recent years are presented, as well as insight into the future developments of photonic crystals.

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Photonic crystal induced multi-color luminescence of one AIEgen and its dual-mode anticounterfeiting application

Cited by 9 publications

References 34 publications

Mechanochromic and Solvomechanochromic Fluorescent Photonic Crystals for Dual-Mode Modulating Fluorescence and Multilevel Anticounterfeiting

Mechanochromic and Solvomechanochromic Fluorescent Photonic Crystals for Dual-Mode Modulating Fluorescence and Multilevel Anticounterfeiting

Bioinspired bioassay platforms derived from colloidal crystals with topological shapes

Advances in Photonic Crystal Research for Structural Color

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