Colorful Ultralong Room Temperature Phosphorescent Afterglow with Excitation Wavelength Dependence Based on Boric Acid Matrix

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(3)

Published: Oct. 11, 2023

Abstract Room temperature phosphorescent (RTP) materials have triggered wide interests because of their excellent performance and various promising applications. However, conventional RTP possessing color‐tunable ultralong afterglow often suffer from low emission efficiency. Herein, a long lifetime high‐efficiency system composed boric acid as the host matrix organic phosphors guest molecules is constructed by suppressing non‐radiative transition process promoting triplet exciton phosphors. The synergistic effect physically limited domain supramolecular anchoring also contributes to (up 1.85 s) high phosphorescence quantum yield 53%). can be visually observed for 30 s. With large overlap π ‐conjugated chromophores, peak redshifted, realizing cyan, green, red in monochromatic domain. In addition, colorful white adjustable with different co‐doping ratios. Finally, application anti‐counterfeiting encryption demonstrated.

Language: Английский

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Application of sodium sulfobutylether-β-cyclodextrin based on encapsulation

Carbohydrate Polymers, Journal Year: 2024, Volume and Issue: 333, P. 121985 - 121985

Published: Feb. 24, 2024

Sodium Sulfobutylether-β-cyclodextrin (SBE-β-CD) is a derivative of β-cyclodextrin, characterized by its stereo structure, which closely resembles truncated cone with hydrophobic internal cavity. The solubility insoluble substances within the cavity significantly enhanced, reducing contact between guest and environment. Consequently, SBE-β-CD frequently employed as co-solvent stabilizer. As research progresses, it has been observed that inclusion reversible competitive. Besides, some complexes undergo distinct physicochemical property alterations compared to guests. Additionally, certain guests exhibit varying inclusions at different concentrations. These features have contributed expanding applications. finds widespread application in pharmaceutics protective agent pKa regulator, pharmaceutical analysis chiral substance separator, biomedical engineering for encapsulating dyes modifying sensors. article will elaborate detail on properties SBE-β-CD, encapsulation principles, factors influencing formation complexes. Furthermore, review focuses through pharmaceutics, analysis, engineering. Finally, prospects potential applications are discussed.

Language: Английский

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Aromatic Bridged Bis(triphenylamine) Cascade Assembly Achieved Tunable Nanosupramolecular Morphology and NIR Targeted Cell Imaging

ACS Nano, Journal Year: 2023, Volume and Issue: 17(19), P. 19349 - 19358

Published: Oct. 2, 2023

Possessing four cationic pyridium groups, phenyl-bridged bis(triphenylamine) derivatives (G1, G2) were encapsulated by cucurbit[8]uril (CB[8]) at a 1:2 stoichiometry to form the network-like organic two-dimensional nanosheet, which could efficiently enhance near-infrared (NIR) luminescence and companies with red-shift from 750 810 nm for G1. Benefiting supramolecular multivalent interaction, α-cyclodextrin modified hyaluronic acid (HACD) G1/CB[8] formed nanoparticles further NIR behaviors. Compared short rigid aromatic bridged derivative (G2), assembly derived G1 long flexible arms gives larger Stokes shift, coassembles phosphorescent bromophenylpyridinium derivative/CB[8] pseudorotaxane, leading efficient resonance energy transfer (PRET). Especially, nanoparticle showed delayed fluorescence under 308 light excitation an ultralarge shift up 502 nm, was successfully applied in targeted cell imaging.

Language: Английский

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Cucurbituril‐Confined Tetracation Supramolecular 2D Organic Framework for Dual‐Emission TS‐FRET

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(20)

Published: April 27, 2024

Abstract Herein, cucurbituril‐regulated supramolecular multi‐dimensional organic framework constructed is reported by tetraphenylvinyl grafted bromophenylpyridine salt derivatives (TPE‐BrN) and cucurbit[n]uril (n = 6, 7, 8) via non‐covalent cross‐linked, giving macrocycle‐confined fluorescence‐phosphorescence dual emission at 560 510 nm in solid state. Different from the formation of TPE‐BrN⊂CB[6] complexes TPE‐BrN⊂CB[7] nanoparticle, TPE‐BrN⊂CB[8] manifested high‐efficient 2D network assembly. assembly can effectively activate triplet‐state to singlet‐state Förster resonance energy transfer (TS‐FRET) with long‐lived near‐infrared 675 doping dye Nile red (NiR) efficiency reached up 99%. Although CB[7] also induce typical phosphorescence nm, there no TS‐FRET occurring after NiR into due different modes. The multicolor has been demonstrated very well based on process activated CB[8] macrocyclic confined framework, which be successfully applied fingerprint imaging construction logic gate systems. It provides a novel method for macrocycle regulation development luminescent materials.

Language: Английский

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Host-guest synergistic hydrogen bond triggered signal amplification for visualizing the plant hormone salicylic acid

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149652 - 149652

Published: Feb. 14, 2024

Language: Английский

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Sulfato‐β‐cyclodextrin induced multivalent supramolecular directional aggregation of cyanovinylene derivatives for achieving reversible near‐infrared fluorescence

Aggregate, Journal Year: 2024, Volume and Issue: unknown

Published: June 23, 2024

Abstract Molecular aggregation or supramolecular aggregation‐induced emission is one of the research hotspots in chemistry, biology, and materials. Herein, we report negatively charged sulfato‐β‐cyclodextrin (SCD) induced cyanovinylene derivatives (DPy‐6C) directional to form regular nanorods (DPy‐6C@SCD) through multivalent interactions, not only achieves ultraviolet‐visible absorption redshifted from 453 521 nm but also displays near‐infrared (NIR) with a large spectral redshift 135 nm. The DPy‐6C monomer presents random nanosheets weak fluorescence obtains aggregates after assembly SCD electrostatic interactions. In presence H + , DPy‐6C@SCD can further aggregate into elliptical without changes due protonation secondary amines. contrast, morphology becomes flexible sticks together upon addition OH − an blue shift 72 90‐fold intensity increase because disrupting stacking mode aggregates, thereby achieving acid‐base regulated reversible behaviors that cannot be realized by monomer. efficiently select detection volatile organic amines both liquid gas phases within 5 s at nanomolar level. Taking advantage RGB analysis calculation formula application, has been successfully used monitor various on smartphone, accompanied naked‐eye visible photoluminescence. Therefore, present provides efficient method which realizes topological transformation NIR luminescent molecular switch high sensitivity fluorescent sensing devices.

Language: Английский

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Construction of aggregation-induced emission photosensitizers through host-guest interactions for photooxidation reaction and light-harvesting

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 651, P. 894 - 901

Published: July 22, 2023

Language: Английский

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Construction of a supramolecular light-harvesting system based on pillar[5]arene-mediated nanoparticles in water

Energy Advances, Journal Year: 2024, Volume and Issue: 3(7), P. 1672 - 1677

Published: Jan. 1, 2024

An artificial light-harvesting system has been fabricated through the host–guest complexation of WP5 and CPy in water. The resultant materials show adjustable fluorescence have employed as a fluorescent ink for information encryption.

Language: Английский

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Interface Phenomena in Molecular Junctions through Noncovalent Interactions

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Noncovalent interactions, both between molecules and at the molecule–electrode interfaces, play essential roles in enabling dynamic reversible molecular behaviors, including self-assembly, recognition, various functional properties. In macroscopic ensemble systems, these interfacial phenomena often exhibit emergent properties that arise from synergistic interplay of multiple noncovalent interactions. However, single-molecule scale, precisely distinguishing, characterizing, controlling individual interactions remains a significant challenge. Molecular electronics offers unique platform for constructing characterizing intermolecular interfaces governed by isolated study fundamental Furthermore, precise control over through facilitates development enhanced devices. This review examines characterization arising electrical measurements explores their applications We begin discussing construction stable junctions followed an analysis electron tunneling mechanisms mediated key modulation methods. then investigate how enhance device sensitivity, stability, functionality, establishing design principles next-generation electronics. have also explored potential bottom-up self-assembled The concludes addressing opportunities challenges scaling up

Language: Английский

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Supramolecular light-harvesting systems based on cucurbit[n]urils: SS-FRET and TS-FRET mechanisms and functional applications

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 533, P. 216555 - 216555

Published: Feb. 27, 2025

Language: Английский

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