Completely aqueous processable stimulus responsive organic room temperature phosphorescence materials with tunable afterglow color

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Jan. 17, 2022

Many luminescent stimuli responsive materials are based on fluorescence emission, while stimuli-responsive room temperature phosphorescent less explored. Here, we show a kind of stimulus-responsive phosphorescence by the covalent linkage chromophore arylboronic acid and polymer matrix poly(vinylalcohol). Attributed to rigid environment offered from hydrogen bond B-O between poly(vinylalcohol), yielded film exhibits ultralong with lifetime 2.43 s quantum yield 7.51%. Interestingly, RTP property this is sensitive water heat stimuli, because could destroy bonds adjacent poly(vinylalcohol) polymers, then changing rigidity system. Furthermore, introducing another two fluorescent dyes system, color afterglow stimulus response effect be adjusted blue green orange through triplet-to-singlet Förster-resonance energy-transfer. Finally, due water/heat-sensitive, multicolor completely aqueous processable feature for these three hybrids, they successfully applied in multifunctional ink anti-counterfeit, screen printing fingerprint record.

Language: Английский

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On-demand modulating afterglow color of water-soluble polymers through phosphorescence FRET for multicolor security printing

Science Advances, Journal Year: 2022, Volume and Issue: 8(15)

Published: April 15, 2022

Developing full-color organic ultralong room temperature phosphorescence (OURTP) materials with continuously variable afterglow emission is of considerable practical importance in diverse optoelectronic applications but remains a formidable challenge. Here, we present an effective strategy for on-demand engineering color water-soluble polymeric systems via efficient Förster resonance energy transfer. Using blue emitting polymer as host and series fluorescent emitters varied emissive colors guests, rationally modulated, conferring the ranging from to red even white lifetimes up 4.2 s photoluminescence quantum yields 36%.These multicolor-emitting can function OURTP security inks, multilevel information encryption was successfully established by RGB-based multicolor printing. These results important guidance developing high-performance polymers tuning ability remarkable applications.

Language: Английский

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Multicharged cyclodextrin supramolecular assemblies

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(11), P. 4786 - 4827

Published: Jan. 1, 2022

Multicharged cyclodextrin (CD) supramolecular assemblies, including those based on positively/negatively charged modified mono-6-deoxy-CDs, per-6-deoxy-CDs, and random 2,3,6-deoxy-CDs, as well parent CDs binding guests, have been extensively applied in chemistry, materials science, medicine, biological catalysis, other fields. In this review, we primarily focus summarizing the recent advances encapsulating especially construction process of assemblies their applications. Compared with uncharged CDs, multicharged display remarkably high antiviral antibacterial activity efficient protein fibrosis inhibition. Meanwhile, can interact oppositely dyes, drugs, polymers, biomacromolecules to achieve effective encapsulation aggregation. Consequently, CD show great advantages improving drug-delivery efficiency, luminescence properties materials, molecular recognition imaging, toughness hydrogels, addition enabling multistimuli-responsive assemblies. These features are anticipated not only promote development CD-based chemistry but also contribute rapid exploitation these diverse interdisciplinary

Language: Английский

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Stepwise Energy Transfer: Near‐Infrared Persistent Luminescence from Doped Polymeric Systems

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(15)

Published: Feb. 9, 2022

Organic near infrared (NIR) persistent-luminescence systems with bright and long-lived emission are highly valuable for applications in communication, imaging, sensors. However, realizing these materials (especially lifetime over 0.1 s) is a challenge, mainly because of non-radiative quenching their excitons. Herein, universal strategy stepwise Förster resonance energy transfer (FRET) NIR system remarkable persistent luminescence (up to 0.2 s at 810 nm) presented, based on new triphenylene-dye-doped polymer (triphenylene-2-ylboronic acid@poly(vinyl alcohol) (TP@PVA)) blue phosphorescence 3.29 s. This demonstrated application not only anti-counterfeiting but also bioimaging penetrating piece skin as thick 2.0 mm. By co-doping red dye (such Nile red) an Cyanine 7 (Cy7) into this doped PVA film, the shortage spectral overlap between TP Cy7 absorbance successfully solved, through FRET process involving triplet singlet (TS)-FRET from intermediate then (SS)-FRET Cy7. It noted that efficiency upper TS-FRET enhanced significantly by lower SS-FRET, leading high efficiencies continuous FRETs.

Language: Английский

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Supramolecular assembly confined purely organic room temperature phosphorescence and its biological imaging

Chemical Science, Journal Year: 2022, Volume and Issue: 13(27), P. 7976 - 7989

Published: Jan. 1, 2022

Purely organic room temperature phosphorescence, especially in aqueous solution, is attracting increasing attention owing to its large Stokes shift, long lifetime, low preparation cost, toxicity, good processing performance advantages, and broad application value. This review mainly focuses on macrocyclic (cyclodextrin cucurbituril) hosts, nanoassembly, macromolecule (polyether) confinement-driven RTP. As an optical probe, the assembly two-stage strategy can realize confined purely RTP achieve energy transfer light-harvesting from fluorescence delayed or phosphorescence. supramolecular widely applied for luminescent materials, cell imaging, other fields because it effectively avoids oxygen quenching. In addition, near-infrared excitation, emission,

Language: Английский

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Phosphorescence resonance energy transfer from purely organic supramolecular assembly

Nature Reviews Chemistry, Journal Year: 2023, Volume and Issue: 7(12), P. 854 - 874

Published: Nov. 22, 2023

Language: Английский

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Achieving purely organic room temperature phosphorescence in aqueous solution

Aggregate, Journal Year: 2022, Volume and Issue: 4(1)

Published: July 12, 2022

Abstract Purely organic room temperature phosphorescence (RTP) materials have aroused increasing interests in recent years and been widely applied anti‐counterfeiting, biological imaging, sensing, etc. Currently, these can be efficiently developed crystalline states amorphous polymer‐doped systems. However, achieving RTP solution, especially water is still a formidable challenge. Recently, reports on aqueous phase some feasible design strategies proposed; however, related investigations are limited there lack of systematic reviews. Therefore, we summarized the cases emission with primarily focusing properties efficient (e.g., forming nanoparticles from phosphorescent molecules macrocyclic supramolecular assembly). Moreover, promising applications bio‐imaging sensing were discussed. Some detailed perspectives concerning application provided hope to provide inspiration for future development RTP.

Language: Английский

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Noncovalent Polymerization‐Activated Ultrastrong Near‐Infrared Room‐Temperature Phosphorescence Energy Transfer Assembly in Aqueous Solution

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(38)

Published: June 30, 2022

Noncovalent macrocycle-confined supramolecular purely organic room-temperature phosphorescence (RTP) is a current research hotspot. Herein, high-efficiency noncovalent polymerization-activated near-infrared (NIR)-emissive RTP-harvesting system in aqueous solution based on the stepwise confinement of cucurbit[7]uril (CB[7]) and β-cyclodextrin-grafted hyaluronic acid (HACD), reported. Compared with dodecyl-chain-bridged 6-bromoisoquinoline derivative (G), dumbbell-shaped assembly G⊂CB[7] presents an appeared complexation-induced RTP signal at 540 nm via first CB[7]. Subsequently, benefitting from encapsulation β-cyclodextrin cavity, subsequent polymerization binary enabled by HACD can contribute to further-enhanced emission intensity approximately eight times addition increased lifetime 59.0 µs 0.581 ms. Moreover, upon doping small amount two types dyes, Nile blue or tetrakis(4-sulfophenyl)porphyrin as acceptor into @ HACD, efficient energy transfer occurs accompanied long-lived NIR-emitting performance (680 710 nm) high donor/acceptor ratio. Intriguingly, prepared successfully applied for targeted NIR imaging living tumor cells utilizing targeting ability acid, which provides new strategy create advanced water-soluble phosphorescent materials.

Language: Английский

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Nearly Unity Quantum Yield Persistent Room‐Temperature Phosphorescence from Heavy Atom‐Free Rigid Inorganic/Organic Hybrid Frameworks

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(35)

Published: June 8, 2022

Synergism between covalent and non-covalent bonds is employed to fix an organic phosphor guest in a rigid inorganic framework, simulating the stiffening effect seen glassy state realizing efficient ultralong room-temperature phosphorescence (RTP). Twelve heavy-atom-free composites have been obtained through introducing arylboric or arylcarboxylic acid derivatives into boric matrix by solid-phase synthesis. Owing of multiple bonds, all show highly persistent RTP molecules with quantum yield ranging from 39.8 % ca. 100 lifetime up 8.74 s, which results 55 s afterglow visible naked eye after exposure portable UV lamp. Interestingly, it found that substitution position quantity carboxyl great influence on phosphorescent properties, heavy-atom invalid such host-guest hybrid systems. The g grade composite easily prepared because solvent-free, green, simple synthesis method. These provide important way for development materials ultrahigh lifetime, as well their practical applications fields anti-counterfeiting information storage, among others.

Language: Английский

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Polymerization-Induced Crystallization of Dopant Molecules: An Efficient Strategy for Room-Temperature Phosphorescence of Hydrogels

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(6), P. 3763 - 3773

Published: Feb. 7, 2023

Conventional hydrogels such as polyacrylamide and polyacrylic acid ones seldom exhibit phosphorescences at ambient conditions, which limit their applications optical materials. We propose demonstrate here a facile strategy to afford these with room-temperature phosphorescence by polymerization-induced crystallization of dopant molecules that results in segregation confinement the gel matrix carbonyl groups thus clusterization-induced phosphorescence. As model system, crown ethers (CEs) are dissolved an aqueous solution concentrated acrylamide greatly increases solubility CEs. During polymerization process, CEs crystallize form large spherulites hydrogel. The arises from drastically reduced after conversion monomers polymers during synthesis. resultant composite hydrogel water content 67 wt % exhibits extraordinary behavior yet maintains good stretchability resilience. found partial is squeezed confined situ-formed crystals, leading clusters emission. shows green emission peak 512 nm lifetime 342 ms. afterglow detectable naked eye for several seconds. This has universality, validated other different polymeric matrices molecules. development mechanical phosphorescent properties should merit design multifunctional soft machines biomedical engineering fields.

Language: Английский

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