Hydrogen‐Bonded Organic Frameworks Enabling Highly Robust Aqueous Phase Ultralong Room‐Temperature Phosphorescence

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(33)

Published: March 12, 2024

Abstract Aqueous phase room‐temperature phosphorescence (RTP) materials are attracting increasing interest owing to their unique optical properties and promising applications. However, the realization of ultralong aqueous state RTP remains a formidable challenge due severe quenching triplet excitons in medium. In this study, universal strategy is presented achieve through encapsulation organic phosphors within rigid hydrogen‐bonded frameworks (HOFs) by situ self‐assembly. Benefiting from compact microenvironments provided HOFs, nonradiative dissipations immensely suppressed populated greatly stabilized geometrical confinement isolating quenchers. As result, assembled HOFs‐based reveal robust emission with an lifetime up 493.1 ms exhibit long‐term structural stability water even harsh conditions (acid base) for more than 10 days. Moreover, fluorescent dye introduced finely tune afterglow performance based on triplet‐to‐singlet Förster resonance energy transfer (TS‐FRET), facilitating advanced information encryption anticounterfeiting This study provides reliable method design prepare expands applications encryption.

Language: Английский

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Ultrastrong room-temperature phosphorescence in cucurbit[8]uril-mediated crystalline supramolecules for ratiometric detection of phenethylamine

Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

Language: Английский

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Zero Background Visualizing Phosphorescence Lateral Flow Immunoassay of Cardiac Troponin I for Rapid and Accurate Diagnosis of Myocardial Infarction

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 8, 2025

Fluorescence lateral flow immunoassays (FL-LFIA) have attracted considerable attention in clinical diagnosis due to their outstanding merits of affordable, sensitive, on-site, and quick detection. However, they are still plagued by significant signal interference, such as autofluorescence scattered light. The development high-performance robust phosphors, i.e., label probes featuring with the character low/no optical background, remains a great challenge. Herein, we report novel visualized phosphorescence LFIA (Phos-LFIA), where composite microspheres, carbon dots (CDs) covalently embedded dendritic mesoporous silicon nanoparticles (DMSNs), were designed selected probes. obtained CDs@DMSNs revealed uniform morphologies particle sizes, well ultralong (lifetime: 1.14 s, visible for over 8 s naked eyes) room temperature (RTP) aqueous solution. As competitive nanotags, an phosphorescence-based time-gated cardiac troponin I (cTnI) without interference. fabricated Phos-LFIA test strips demonstrated zero-background applied highly sensitive cTnI detection both buffer complex serum matrix, corresponding limits (LODs) 0.19 0.21 ng/mL, respectively. For validation, proposed excellent analytical performance (sensitivity: 95.45%, specificity: 88.9%, κ value: 0.85), demonstrating its potential rapid accurate myocardial infarction. This work provided promising background-free probe FL-LFIA, it would also open opportunity developing screening platforms other targets through modifying different recognition ligands onto CDs@DMSNs.

Language: Английский

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Fungal detection and elimination based on AIEgens

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 533, P. 216548 - 216548

Published: Feb. 26, 2025

Language: Английский

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Controllable Modulation of Efficient Phosphorescence Through Dynamic Metal‐Ligand Coordination for Reversible Anti‐Counterfeiting Printing of Thermal Development

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 33(2)

Published: Nov. 6, 2022

Abstract Dynamically tunable room‐temperature phosphorescence (RTP) organic materials have attracted considerable attention in recent years due to their great potential over a wide variety of advanced applications. However, the precise regulation intersystem crossing (ISC) process for efficient RTP with dynamically modulated properties rigid environment is challenging. Herein, an effective strategy material preparation controllably regulated developed via construction dynamic metal‐ligand coordination host‐guest doped system. The interaction promotes ISC and emission guest, thus allowing modulation photophysical by changing doping ratio Zn 2+ counterions. By taking advantage reversible interaction, coordination‐activated, dissociation‐deactivated manipulated. With unique ‐responsible enhancement materials, anti‐counterfeiting applications thermal development, color inversion been constructed inkjet printing high‐resolution patterns high reversibility many write/erase cycles. results show that promising approach achieving properties.

Language: Английский

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The Key Role of Molecular Packing in Luminescence Property: From Adjacent Molecules to Molecular Aggregates

Advanced Materials, Journal Year: 2023, Volume and Issue: unknown

Published: Sept. 22, 2023

Abstract The luminescence materials act as the key components in many functional devices, well detection and imaging systems, which can be permeated each aspect of modern life, attract more attention for creative technology applications. In addition to diverse properties organic luminogens, multiple molecular packing at aggregated states frequently offers new and/or exciting performance. However, there still lacks comprehensive analysis these materials, resulting an increased gap between design practical this review, from basic knowledge compounds single molecules, discernable property excimer, charge transfer (CT) complex or self‐assembly systems by adjacent finally opto‐electronic performance aggregates, relevant factors applications are discussed.

Language: Английский

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Ultralong excimer phosphorescence by the self‐assembly and confinement of terpyridine derivatives in polymeric matrices

Aggregate, Journal Year: 2023, Volume and Issue: 4(4)

Published: April 30, 2023

Abstract Ultralong organic room temperature phosphorescence (RTP) is attracting increasing attention due to its fascinating optical phenomena and wide applications. Among various RTP, excimer of fundamental significance, but it remains a considerable challenge achieve flexible, multicolor large‐area RTP materials, which should greatly advance the understanding development light‐emitting devices. Herein, we present ultralong films by self‐assembly confinement terpyridine (Tpy) derivatives in polymeric matrices. Strikingly, Tpy induces formation complexes, thus immensely minimizing singlet‐triplet splitting energy (ΔE ST ) promote intersystem crossing process. Furthermore, multiple hydrogen bonding interactions as well compact aggregation phosphors jointly suppresses nonradiative transitions, leading long‐lived ( τ = 543.9 ms, 19,000‐fold improvements over powder). On account outstanding afterglow performance color‐tunability flexible were fabricated for intelligent display, anticounterfeiting, time‐resolved information encryption.

Language: Английский

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Five-in-one: Dual-mode ultralong persistent luminescence with multiple responses from amorphous polymer films

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 463, P. 142506 - 142506

Published: March 20, 2023

Language: Английский

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A Single Carbon-Dot System Enabling Multiple Stimuli Activated Room-Temperature Phosphorescence

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(18), P. 22415 - 22425

Published: April 27, 2023

Room-temperature phosphorescent carbon dots (RTPCDs) have attracted considerable interests due to their unique nanoluminescent characteristic with time resolution. However, it is still a formidable challenge construct multiple stimuli-activated RTP behaviors on CDs. Since the address of this issue facilitates complex and high-regulatable applications, we here develop novel strategy achieve stimuli responsive activation single carbon-dot system (S-CDs), using persulfurated aromatic carboxylic acid as precursor. The introduction carbonyl groups S atoms can promote intersystem crossing process generate produced Meanwhile, by introducing these functional surface into S-CDs, property be activated light, acid, thermal in solution or film state. In way, multistimuli tunable characteristics are realized system. Based set properties, S-CDs applied photocontrolled imaging living cells, anticounterfeit label, multilevel information encryption. Our work will benefit development multifunctional nanomaterials together extending application scope.

Language: Английский

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Symmetry‐Breaking Triplet Excited State Enhances Red Afterglow Enabling Ubiquitous Afterglow Readout

Advanced Science, Journal Year: 2024, Volume and Issue: 11(14)

Published: Feb. 4, 2024

Abstract Molecular vibrations are often factors that deactivate luminescence. However, if there molecular motion elements enhance luminescence, it may be possible to utilize movement as a design guideline Here, the authors report large contribution of symmetry‐breaking enhances red persistent room‐temperature phosphorescence (RTP) in donor‐ π ‐donor conjugated chromophores. The deuterated form chromophore exhibits efficient RTP with yield 21% and lifetime 1.6 s. A dynamic calculation rate constant ( k p ) indicates has crucial role selectively facilitating without increasing nonradiative transition from lowest triplet excited state. Molecules exhibiting enable long‐wavelength excitation, indicating suitability observing afterglow readout bright indoor environment white‐light‐emitting diode flashlight, greatly expanding range anti‐counterfeiting applications use afterglow.

Language: Английский

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