Fortified Donor–Acceptor Spectral Overlap Facilitated Fluorescence Quenching Efficiency for Developing Sensitive Nanometal Surface Energy Transfer-Based Immunochromatographic Test Strips

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

Published: Feb. 25, 2025

Constructing a fluorescence quenching immunochromatography test strip (FQ-ICTS) is conducive to sensitive point-of-care testing, yet inefficient efficiency (QE) confines the progress of FQ-ICTS. Herein an innovative nanometal surface energy transfer (NSET)-based FQ-ICTS with magnificent QE was proposed for highly detection T2 toxin utilizing time-resolved fluorescent microspheres (TRFMs) conjugated T2-BSA as donors and monoclonal antibodies (mAbs) labeled spherical flower-shaped gold particles (AuNPs) acceptors. As key biosensors, by regulating distinct absorption wavelengths AuNPs-mAb (520–605 nm), effect donor–acceptor overlapping area on explored, NEST pair highest screened out achieve perfect sensitivity. It found that increased enlargement integral area. At maximum spectral overlap (4.68 × 1023 M–1 cm–1 nm4), AuNPs-605 TRFMs were optimized NSET up 92.7%, described revealed limit reaching down 0.034 ng/mL, which 13.2-fold improvement over conventional AuNPs-ICTS, possessing favorable specificity repeatability. Importantly, platform could be well-applied in real maize sample monitoring satisfactory recoveries (95.5% 108.7%), correlating well results from HPLC-MS/MS. Concisely, this work demonstrates expansion opens opportunities exploration high acceptors superior performance ICTS.

Language: Английский

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Facile Tailoring of Metal‐Organic Frameworks for Förster Resonance Energy Transfer‐Driven Enhancement in Perovskite Photovoltaics

Advanced Science, Journal Year: 2024, Volume and Issue: 11(18)

Published: March 6, 2024

Abstract Förster resonance energy transfer (FRET) has demonstrated its potential to enhance the light utilization ratio of perovskite solar cells by interacting with metal‐organic frameworks (MOFs) and layers. However, comprehensive investigations into how MOF design synthesis impact FRET in systems are scarce. In this work, nanoscale HIAM‐type Zr‐MOF (HIAM‐4023, HIAM‐4024, HIAM‐4025) is meticulously tailored evaluate FRET's existence influence on photoactive layer. Through precise adjustments amino groups acceptor units organic linker, HIAM‐MOFs synthesized same topology, but distinct photoluminescence (PL) emission properties. Significant observed between HIAM‐4023/HIAM‐4024 perovskite, confirmed spectral overlap, fluorescence lifetime decay, calculated distances perovskite. Conversely, overlap PL HIAM‐4025 perovskite's absorption spectrum relatively minimal, impeding from Therefore, HIAM‐4023/HIAM‐4024‐assisted devices exhibit enhanced EQE via processes, whereas demonstrates comparable pristine. Ultimately, HIAM‐4023‐assisted device achieves an power conversion efficiency (PCE) 24.22% compared pristine (PCE 22.06%) remarkable long‐term stability under ambient conditions continuous illumination.

Language: Английский

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Yttrium Metal–Organic Framework Nanocrystals for Two‐Step Deposited Perovskite Photovoltaics with Enhanced UV‐light Durability

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)

Published: June 27, 2024

Abstract Metal–organic frameworks (MOFs), renowned for their porous and tunable functionalities, hold significant potential enhancing perovskite photovoltaic. However, the influence of MOF, particularly those with balanced cations in pores, on conversion bottom‐layer PbI 2 distribution MOFs within remains underexplored. Herein, a newly synthesized Yttrium (Y)‐MOF material is introduced, featuring dimethylamine (DMA) as its pores strong absorption UV regime, to modify films. Y‐MOF, rich oxygen nitrogen sites, DMA can passivate uncoordinated Pb 2+ perovskite. Scanning electron microscopy (SEM) grazing incidence wide‐angle X‐ray scattering (GIWAXS) analysis top bottom surfaces pristine Y‐MOF‐assisted samples reveal that presence films negligible. In situ UV–vis analyses demonstrate incorporation Y‐MOF decelerates crystallization kinetics perovskite, facilitating development larger grains. Moreover, GIWAXS experiments conducted at different angles predominant which effectively mitigates impact ultraviolet light Consequently, devices achieve an efficiency 24.05% improved stability especially UV‐light stability.

Language: Английский

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Interfacially Weakened Förster Resonance Energy Transfer of Biocompatible Hole Transport Layers for Enhanced Perovskite Light‐Emitting Diodes

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Abstract The green, low‐cost, and biocompatible organic semiconductor chlorophyll (Chl) is an ideal alternative hole transport layer of perovskite light‐emitting diodes (PeLEDs). However, the excessive electrostatic interaction between molecules luminescent can severely lead to a Förster resonance energy transfer (FRET) phenomenon at interface greatly reduce performance PeLEDs. Here, sodium copper chlorophyllin (NaCu‐Chl) with unique “single‐point configuration” negative potential distribution theoretically designed effectively weaken interfacial anchoring effect successfully suppress FRET. Experimentally, its weaker FRET proved result in stronger photoluminescence (PL) 528 nm as well longer exciton lifetime. Furthermore, more matched levels smaller injection barrier, reducing nonradiative recombination. As result, NaCu‐Chl‐based PeLEDs device exhibits higher external quantum efficiency (EQE) 7.53%, 5.75 times luminance (65024 cd m −2 ), 4.27 half lifetime ( T 50 ) compared Chl‐based Evidently, this work provides strategy intrinsically strong chlorophyll/perovskite for efficient promotes promising application (HTL)

Language: Английский

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High-Stability Printable Perovskite SERS Substrates in an Aqueous Environment via Plasmon-Induced Resonance Energy Transfer

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 13538 - 13551

Published: Feb. 24, 2025

The excellent photoelectric conversion efficiency and tunable bandgap of metal halide perovskites make them highly suitable for SERS applications. However, the low stability in water oxygen greatly hinders their use detection, particularly biomolecule detection applications, which often require water-based test solutions. Herein, we report a gold (Au)/perovskite-polyvinylidene difluoride (PVDF) nanocomposite/ZnO nanoflower (GPPZ) substrate capable functioning aqueous Its enhancement ability is attributed to plasmon-induced resonance energy transfer (PIRET) an electromagnetic mechanism. surface plasmon created by ultrathin Au ZnO nanoflowers induces transfers perovskite via PIRET, facilitating quasi-matched charge between probe molecule. PVDF coating protects from without affecting energy-transfer process. As result, factor (EF) approaching 1 × 106 was achieved crystal violet Additionally, fabricated flexible GPPZ using silk screen printing, enabling mass production array substrate. printed substrates demonstrated micromole-level cysteine with EF 6.8 105, showing potential application hyperhomocysteinemia diagnosis.

Language: Английский

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Synergistic Enhancement of Light Harvesting and Interfacial Defect Reduction Using Metal–Organic Frameworks for Efficient and Stable Perovskite Solar Cells

ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

Language: Английский

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Methylamine Gas Sensor Based on Fluorescent Perovskite Nanocrystal Nanofibers Incorporating Aggregation-Induced Emission Materials

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(15), P. 17329 - 17338

Published: July 26, 2024

This study introduces a methylamine gas sensor based on composite material of halide metal perovskite (MAPbBr3) and the aggregation-induced emission (AIE) (S)-OBN-tCz. Using electrospinning technology, superhydrophobic MAPbBr3&(S)-OBN-tCz@PMMA nanofibers were fabricated to enhance specific surface area stability sensing unit. The exhibits high selectivity toward gas, enabling precise detection across broad concentration range demonstrating excellent repeatability. Additionally, incorporation AIE has successfully improved signal intensity optical sensors through Förster resonance energy transfer mechanism passivation effect, thereby effectively enhancing sensitivity sensors.

Language: Английский

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Unlocking the Power of MOF-Inspired Nanomaterials: Enhancing Solar Cell Efficiency Through Advanced Structures and Properties

Synthetic Metals, Journal Year: 2024, Volume and Issue: unknown, P. 117823 - 117823

Published: Dec. 1, 2024

Language: Английский

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Conformation Regulation of Perylene Diimide Derivatives by Lanthanide Coordination for Turn-On Fluorescence Sensing of Sarin Simulants

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 64(1), P. 181 - 191

Published: Dec. 31, 2024

Fluorescent metal–organic frameworks (MOFs) are promising sensing materials that have received much attention in recent years, which the organic ligand conformation changes usually lead to variations of their behavior. Based on this, present work, perylene diimide (PDI) derivatives with excellent photochemical properties closely related and molecule packing fashion were selected as linkers detect sarin simulant diethyl chlorophosphate (DCP). By coordination interactions large lanthanide cations through terminal carboxylate groups from PDI derivative, a series one-dimensional polymers, named [Ln(PDICl4-2COO)(μ2-O)0.5(DMF)1.5] (SNNU-112, Ln = Yb/Tb/Sm/Nd/Pr/Gd/Eu/Er/Ce, PDICl4-2COOH N,N′-bis(4-benzoic acid)-1,2,6,7-tetrachlorohydrazone-3,4,9,10-tetracarboxylic acid diimide) synthesized. Regulated by process, undergoes certain degree conformational turnover thus leads an electron distribution change compared free PDICl4-2COOH. Notably, contact DCP triggered further conversion ligands SNNU-112 caused fluorescence turn-on phenomenon realizing well-defined detection performance for basis photoinduced transfer process. Among nine MOFs, Yb-MOF sensor exhibited lowest limit (4.36 ppb), fast response, high selectivity, good recyclability. Such molecular regulation metal may provide new way exploration fluorescent sensors.

Language: Английский

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Metal–Organic Frameworks and Derivative Materials in Perovskite Solar Cells: Recent Advances, Emerging Trends, and Perspectives

Solar RRL, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 30, 2024

The power conversion efficiency (PCE) of perovskite solar cells (PSCs) has reached an impressive value 26.1%. While several initiatives such as structural modification and fabrication techniques helped steadily increase the PCE stability PSCs in recent years, incorporation metal–organic frameworks (MOFs) stands out among other innovations emerged a promising path forward to make this technology front‐runner for realizing next‐generation low‐cost photovoltaic technologies. Owing their unique physiochemical properties extraordinary advantages large specific surface area tunable pore structures, incorporating them as/in different functional layers endows devices with optoelectronic properties. This article reviews latest research practices adapted integrating MOFs derivative materials into constituent blocks photoactive absorber, electron‐transport layer, hole‐transport interfacial layer. Notably, special emphasis is placed on aspect improvement by materials. Also, potential lead absorbents highlighted. Finally, outlook critical challenges faced future perspectives employing light commercialization provided.

Language: Английский

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