Aggregation-Induced Emission (AIE), Life and Health

ACS Nano, Год журнала: 2023, Номер 17(15), С. 14347 - 14405

Опубликована: Июль 24, 2023

Light has profoundly impacted modern medicine and healthcare, with numerous luminescent agents imaging techniques currently being used to assess health treat diseases. As an emerging concept in luminescence, aggregation-induced emission (AIE) shown great potential biological applications due its advantages terms of brightness, biocompatibility, photostability, positive correlation concentration. This review provides a comprehensive summary AIE luminogens applied structure dynamic physiological processes, disease diagnosis treatment, detection monitoring specific analytes, followed by representative works. Discussions on critical issues perspectives future directions are also included. aims stimulate the interest researchers from different fields, including chemistry, biology, materials science, medicine, etc., thus promoting development fields life health.

Язык: Английский

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Photo-triggered full-color circularly polarized luminescence based on photonic capsules for multilevel information encryption

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Май 25, 2023

Materials with phototunable full-color circularly polarized luminescence (CPL) have a large storage density, high-security level, and enormous prospects in the field of information encryption decryption. In this work, device-friendly solid films color tunability are prepared by constructing Förster resonance energy transfer (FRET) platforms chiral donors achiral molecular switches liquid crystal photonic capsules (LCPCs). These LCPCs exhibit photoswitchable CPL from initial blue emission to RGB trichromatic signals under UV irradiation due synergistic effect chirality show strong time dependence because different FRET efficiencies at each node. Based on these response characteristics, concept multilevel data using LCPC is demonstrated.

Язык: Английский

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Achieving Color‐Tunable and Time‐Dependent Organic Long Persistent Luminescence via Phosphorescence Energy Transfer for Advanced Anti‐Counterfeiting

Advanced Functional Materials, Год журнала: 2022, Номер 33(1)

Опубликована: Окт. 30, 2022

Abstract Organic ultralong room‐temperature phosphorescence (RTP) materials have promising applications in anti‐counterfeiting. To improve the encryption level, exploration of organic with tunable solid‐state long persistent luminescence is urgent need. Herein, a series RTP polymeric systems are prepared by doping versatile indolocarbazole isomers into poly(vinyl alcohol) (PVA) matrix. Notably, film 11,12‐ICz@PVA exhibits excellent property an lifetime 2.04 s and high quantum yield 44.1%. Theoretical calculations reveal that this can be attributed to strong electrostatic attraction resulting from synergistic double hydrogen‐bond between isomer 11,12‐ICz PVA More impressively, color‐tunable time‐dependent successfully achieved through efficient energy transfer blue emissions commercially available fluorescent dyes emission colors ranging green red doped Besides, diversified patterns fabricated demonstrate these water‐soluble advanced anti‐counterfeiting technology.

Язык: Английский

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Stimulus-responsive polymer materials toward multi-mode and multi-level information anti-counterfeiting: recent advances and future challenges

Chemical Society Reviews, Год журнала: 2023, Номер 53(2), С. 606 - 623

Опубликована: Дек. 15, 2023

This review highlights the recent advances and discusses challenges perspectives of stimulus-responsive polymer (SRP)-based information-storage materials, which exhibit multi-mode or multi-level anti-counterfeiting performance.

Язык: Английский

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Photo‐Stimuli‐Responsive Dual‐Emitting Luminescence of a Spiropyran‐Encapsulating Metal–Organic Framework for Dynamic Information Encryption

Advanced Materials, Год журнала: 2023, Номер 35(26)

Опубликована: Март 9, 2023

The development of photo-stimuli-responsive luminescent materials is essential to address emerging demands in encryption security. Here, a novel dual-emitting material ZJU-128⊃SP (SP = spiropyran) reported, which obtained by encapsulating spiropyran molecules into cadmium-based metal-organic framework (MOF), [Cd3 (TCPP)2 ]·4DMF·4H2 O (ZJU-128, H4 TCPP 2,3,5,6-tetrakis (4-carboxyphenyl)pyrazine). This MOF/dye composite exhibits blue emission from the ligand ZJU-128 at 447 nm and red around 650 spiropyran. Utilizing photoisomerization ring-closed ring-open form under UV-light irradiation, significant fluorescence resonance energy transfer (FRET) process between achieved. As result, gradually decreased while increases. dynamic fluorescent behavior can fully recover original state following exposure visible light (>405 nm). By taking advantage time-dependent fluorescence, dynamical anti-counterfeiting patterns multiplexed coding are successfully developed based on film. work provides an inspiring point for design information with higher security requirements.

Язык: Английский

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Stimuli-fluorochromic smart organic materials

Chemical Society Reviews, Год журнала: 2024, Номер 53(3), С. 1090 - 1166

Опубликована: Янв. 1, 2024

This review highlights the developments in stimuli-fluorochromic π-conjugated solids beyond organometallic and organic light-responsive compounds, addressing design strategies, mechanisms, limitations, challenges, opportunities.

Язык: Английский

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Light‐Writing and Projecting Multicolor Fluorescent Hydrogels for On‐Demand Information Display

Advanced Materials, Год журнала: 2023, Номер 35(25)

Опубликована: Апрель 13, 2023

Intelligent rewritable display systems have been long expected to reduce the heavy consumption of single-use or transient devices in age Internet-of-Things. However, it remains challenging construct such with integrated functionality remote control, rapid activation, multicolor and multimode display. Herein, by learning from unique multilayer arrangement chromatophores chameleon skins, a promising kind hydrogel is presented that can combine merits near-infrared (NIR) light-writing projecting modes for on-demand information Specifically, typical layout consisting poly(dimethylsiloxane) (PDMS)-sealed carbon nanotubes (CNTs) film as photothermal control unit embedded fluorescent hydrogels unit, which thermoresponsive constrained within non-responsive hydrogel. Such rational structure design results establishment one mechanism via cascading "light trigger-heat generation-fluorescence output" process. On this basis, reversible hand-written arbitrary achieved 5 s. Also, sustainable light-projecting predesigned patterns demonstrated due ensures easy patterning layer. This study brings functional-integrated novel open new possibility high-end products display/transmission.

Язык: Английский

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A Dual‐Responsive Liquid Crystal Elastomer for Multi‐Level Encryption and Transient Information Display

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(48)

Опубликована: Окт. 11, 2023

Abstract Information security has gained increasing attention in the past decade, leading to development of advanced materials for anti‐counterfeiting, encryption and instantaneous information display. However, it remains challenging achieve high with simple procedures low‐energy stimuli. Herein, a series strain/temperature‐responsive liquid crystal elastomers (LCEs) are developed dual‐modal, multi‐level real‐time, rewritable transient The as‐prepared polydomain LCEs can change from an opaque state transparent under strain or temperature stimuli, transition strains temperatures highly dependent on concentration long‐chain flexible spacers. encrypted by different LCE inks be decrypted specific temperatures, protection security. Furthermore, combination phase photothermal effect multi‐walled carbon nanotubes (MWCNTs), we achieved repeatable display using near‐infrared (NIR) light as pen writing. This study provides new insight into versatility broad applications.

Язык: Английский

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Multi-site isomerization of synergistically regulated stimuli-responsive AIE materials toward multi-level decryption

Chemical Science, Год журнала: 2024, Номер 15(11), С. 3920 - 3927

Опубликована: Янв. 1, 2024

Stimuli-responsive aggregation-induced emission (AIE) materials are highly sensitive and rapidly responsive to external signals, making them ideal solid for anti-counterfeiting encryption. However, the limited conformational packing variations resulting from regio-isomerization with a single substituent restricts stimuli-responsive behavior of these materials. In this work, several AIE-active regio-structural isomers based on salicylaldehyde Schiff base scaffold have been straightforwardly obtained through multiple substitutions bromide triphenylamine moieties. Solvent-effect experiments demonstrate their different orders charge-transfer excited-state intramolecular proton transfer upon photoexcitation, indicating regulation processes via multi-site isomerization. These also mechanochromism acidichromism, allowing adjustable effects. As demonstration, p-Br-TPA both acidichromism can be synergistically utilized multi-level decryption. This study successfully regulates evolution excited states isomerization, offering general approach achieving tunable properties in bases toward

Язык: Английский

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Tunable Photochromism of Spirooxazine in the Solid State: A New Design Strategy Based on the Hypochromic Effect

Advanced Materials, Год журнала: 2022, Номер 35(11)

Опубликована: Дек. 29, 2022

As an important organic photofunctional material, spirooxazine (SO) usually does not exhibit photochromism in the solid state since intermolecular π-π stacking impedes photoisomerization. Developing photochromic SO is crucial for practical applications but still full of challenges. Here, a series derivatives (SO1-SO4) with bulky aromatic substituents at 4- and 7-positions skeleton, which provide them large volume to undergo solid-state under mild conditions, designed synthesized. All compounds SO1-SO4 tunable without ground colors, excellent fatigue resistance, high thermal stability. Notably, it takes only 15 s SO4 reach saturation absorption intensity, thought represent fastest photoresponse spirooxazines. X-ray crystal structures intermediate compound SO0 products SO1-SO2 as well computational studies suggest that groups can lead hypochromic effect, allowing state. The ideal properties these spirooxazines open new avenue their UV printing, quick response code, related fields.

Язык: Английский

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