Recent progress of crystalline porous organic frameworks as ratiometric fluorescence biosensing platforms

TrAC Trends in Analytical Chemistry, Год журнала: 2023, Номер 171, С. 117500 - 117500

Опубликована: Дек. 22, 2023

Язык: Английский

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Regulating Ratiometric Fluorescence of Nanoporous Dual-Centered Lanthanide Metal–Organic Frameworks for Quantitative and Visual Detection of Anthrax Biomarkers

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(22), С. 25805 - 25814

Опубликована: Окт. 31, 2024

Developing a sensitive, rapid, and accurate method for the quantitative visual detection of anthrax biomarker dipicolinic acid (DPA) is great significance to human health public safety. Due presence "antenna effect", sensitization Eu3+ ions Tb3+ can be facilely achieved by organic ligands with different degrees exhibits excellent luminescence behavior ions, enabling dual-centered lanthanide metal–organic framework (Ln-MOF) promising ratiometric fluorescence sensor trace DPA determination. Herein, we present series nanoporous frameworks, denoted as {EuxTb1–x(BPDC)(μ3-OH)(H2O)·H2O·DMF}n (EuxTb1–x-BPDC) assembled 2,2′-bipyridine-4,4′-dicarboxylic (H2BPDC), sensors DPA. Among these, Eu0.5Tb0.5-BPDC stands out optimal material, exhibiting superior performance quantitative, visual, detection. Moreover, demonstrates stability in aqueous solution capability remarkable sensitivity (limit (LOD) = 0.608 μM), selectivity (Ksv 6.46 × 106 M–1), anti-interference, impressive reusability. contribution blocked energy transfer between mixed-lanthanide competitive absorption DPA, color change observation from red greenish-yellow under illumination ultraviolet light. Most importantly, colorimetric test strips portable hydrogels, facilitating practical application

Язык: Английский

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Viologen Guest-Mediated Luminescence Emission Tuning and Photochromic Behavior by a Series of Viologen@Zn-MOF Materials

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(44), С. 51411 - 51420

Опубликована: Окт. 26, 2023

The encapsulation of various guest molecules into the pores metal-organic frameworks (MOFs) to form hybrid materials has attracted significant attention due their unique spatial distribution and certain preferential geometry guests inside MOFs. This arrangement often results in exhibiting physical chemical properties intramolecular interactions with host. In this article, five viologen derivatives were introduced as a Zn-MOF different benzene ring lengths, resulting formation host-guest three-dimensional (3D) compounds exhibited guest-dependent emission wavelength, color, excellent photochromic behavior upon ultraviolet (UV) light radiation distinct electronic transfer π···π stacking between host framework. study provides strategy for designing color-tunable luminescent highly sensitive materials.

Язык: Английский

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A dual-color ratiometric fluorescence sensor of biogenic amines with dye encapsulated covalent organic framework for meat freshness

LWT, Год журнала: 2024, Номер unknown, С. 116788 - 116788

Опубликована: Сен. 1, 2024

Язык: Английский

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A Multifunctional Ca^II–Eu^III Heterometallic Organic Framework with Sensing and Selective Adsorption in Water

Inorganic Chemistry, Год журнала: 2024, Номер 63(15), С. 6871 - 6882

Опубликована: Апрель 1, 2024

With increasing global industrialization, it is urgent and challenging to develop multifunctional species for detection adsorption in the environment. For this purpose, a novel anionic heterometallic organic framework, [(CH3)2NH2][CaEu(CAM)2(H2O)2]·4H2O·4DMF (CaEuCAM), hydrothermally synthesized based on chelidamic acid (H3CAM). Single crystal analysis shows that CaEuCAM features two different oxygen-rich channels along c-axis which one CAM3– bridges sextuple-coordinated Ca2+ octuple-coordinated Eu3+ with μ4-η1: η1: η1 new chelating bridging mode. The characteristic bright red emission superior hydrostability of under harsh acidic basic conditions benefit by acting as highly sensitive sensor Fe3+ 3-nitrophenol (3-NP) extremely low LODs through remarkable quenching. combination experiments theoretical calculations sensing mechanisms competitive absorption interaction are responsible Fe3+-induced selective quenching, while 3-NP result synergism host–guest chemistry inner filter effect. Meanwhile, assimilation negative charge plus renders adsorbent methylene blue (MB) due synergy electrostatic affinity, ion-dipole interaction, size matching. Of note reusability toward Fe3+/3-NP MB besides its fast response. These findings could be very useful guiding development Ln-MOFs applications water media.

Язык: Английский

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A pH-responsive dual-emission composite for fast detection of BAs and visual monitoring seafood freshness with large luminescence color difference

Talanta, Год журнала: 2024, Номер 282, С. 126946 - 126946

Опубликована: Сен. 30, 2024

Язык: Английский

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Sequential Stimuli‐Response System of Eu‐MOF Isomers

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 5, 2025

Abstract Multiple stimuli‐responsive materials hold excellent potential for the next generation smart owing to their unique response external stimuli, providing a powerful impetus development of intelligent optical devices. The behavior common multiple are independent each other, causing lack multiplicity and identification information technology, which is easy decode. Herein, QIPA‐Eu‐1 QIPA‐Eu‐2 isomers were prepared from QIPA EuCl 3 ·6H 2 O in different solvent thermal conditions building sequential stimuli‐response (SSR) system. Solvent‐driven structural transformations into QIPA‐Eu‐3 occurred, along with color change fluorescence emission variation ascribed aggregates. Furthermore, displayed photochromic behaviors. Combining theoretical calculation well‐defined experiments reveal mechanism, it was found that light drove dihedral angles between quinoline nucleus adjacent benzene rings Finally, on basis stimuli‐induced stepwise responsive QIPA‐Eu‐1, logic gate time‐dependent dynamic anti‐counterfeiting pattern successfully constructed. This study provided new perspective design construction SSR system, showed promising fields data transmission encryption.

Язык: Английский

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Recent studies of metal-organic frameworks as meat freshness sensors

Microchemical Journal, Год журнала: 2025, Номер 212, С. 113184 - 113184

Опубликована: Фев. 27, 2025

Язык: Английский

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Metal‐polyphenol Multistage Competitive Coordination System for Colorimetric Monitoring Meat Freshness

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Abstract A low‐cost, high‐precision, and secure real‐time system for monitoring food freshness can significantly improve spoilage issues, yet traditional colorimetric sensor arrays often suffer from chemical dyes’ high toxicity limited color changes. Here, a metal‐polyphenol network array (MPN‐CSA) is built detecting total volatile base nitrogen (TVB‐N) markers of meat freshness. The multi‐level competitive coordination process between the amine substances endows with changes far beyond those dyes (reaching detection limit 300 ppb). By integrating convolutional neural (CNN) technology, an online platform developed freshness, achieving overall accuracy rate 99.83%. This environmentally friendly, economically viable MPN‐CSA that monitors in complex storage environments be incorporated into packaging boxes, enabling consumers suppliers to assess real‐time, thus helping reduce waste prevent foodborne illnesses.

Язык: Английский

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Zinc-based metal-organic frameworks as fluorescent probes for the detection of Vitamin B6

Dyes and Pigments, Год журнала: 2023, Номер 222, С. 111857 - 111857

Опубликована: Ноя. 29, 2023

Язык: Английский

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