Mechanically robust, self-reporting and healable polyurethane elastomers by incorporating symmetric/asymmetric chain extenders

Materials Horizons, Journal Year: 2024, Volume and Issue: 11(6), P. 1548 - 1559

Published: Jan. 1, 2024

Self-healing elastomers usually show poor mechanical properties and environmental stability, they cannot self-report mechanical/chemical damage.

Language: Английский

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Timescale correlation of shallow trap states increases electrochemiluminescence efficiency in carbon nitrides

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: April 27, 2024

Abstract Highly efficient interconversion of different types energy plays a crucial role in both science and technology. Among them, electrochemiluminescence, an emission light excited by electrochemical reactions, has drawn attention as powerful tool for bioassays. Nonetheless, the large differences timescale among diverse charge-transfer pathways from picoseconds to seconds significantly limit electrochemiluminescence efficiency hamper their broad applications. Here, we report coordination strategy improve carbon nitrides engineering shallow electron trap states via Au-N bond functionalization. Quantitative kinetics measurements theoretic calculations jointly disclose that bonds endow states, which coordinate fast transfer bulk emitter slow redox reaction co-reagent at diffusion layers. The ultimately accelerate rate emissive electron-hole recombination, setting new cathodic record nitrides, empowering visual sensor nitrite ion, typical environmental contaminant, with superior detection range limit.

Language: Английский

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A Portable Integrated Electrochemical Sensing System for On‐Site Nitrite Detection in Food

Small, Journal Year: 2023, Volume and Issue: 20(22)

Published: Dec. 15, 2023

Abstract Ensuring an appropriate nitrite level in food is essential to keep the body healthy. However, it still remains a huge challenge offer portable and low‐cost on‐site analysis without any expensive equipment. Herein, integrated electrochemical sensing system (IESS) developed achieve rapid detection food, which composed of disposable microfluidic patch for few‐shot detection, reusable smartphone‐assisted electronic device based on self‐designed circuit board signal processing wireless transmission. The MXene‐Ti 3 C 2 T x /multiwalled carbon nanotubes‐cyanocobalamin (MXene/MWCNTs‐VB 12 )‐modified working electrode achieves high sensitivity 10.533 µA m −1 low limit 4.22 µ owing strong electron transfer ability hybrid MXene/MWCNTs conductive matrix selectivity VB bionic enzyme‐based ion‐selective layer. Moreover, IESS can rapidly collect pending testing samples through within 1.0 s conduct immediate analysis, then wirelessly transmit data from signal‐processing smartphone via Bluetooth module. Consequently, this proposed demonstrates transmission one palm‐sized device, would pave new avenue safety personal bespoke therapy.

Language: Английский

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CeO₂@Mn Nanozymes for Colorimetric and Fluorescence Detection of Iodide Ions in Urine and Blood

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

The abnormal levels of small molecules, such as iodide ions (I–), in biological systems can be key indicators certain diseases and may pose risks to human health, playing a significant role various physiological processes. Herein, we developed solvothermal method for the synthesis CeO2-based nanozymes (CeO2 NPs, CeO2@Mn CeO2@Se NPs), which serve recognition probes quantitative detection I– urine blood using both colorimetric fluorescence dual methods. NPs showed excellent catalytic activity with aid O-phenylenediamine (OPD) chromogenic substrate; oxidation OPD presence H2O2 produce yellow OPDOX was catalyzed by acting peroxidase enzyme, neutral environment (pH = 6) I–. displayed distinct absorption peaks at 275 nm 450 nm, along maximum emission peak 575 under 380 excitation. Based on these observations, recognition, utilizing detection, developed. limits were found 20 μg/L (3σ/S) mode 0.085 mode. Furthermore, achieved precise blood, offering advantages use resource-limited settings on-site testing. This enhances its potential broader application public health surveillance early disease screening.

Language: Английский

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Simple method for visual detection of nitrite using fluorescence and colorimetry by poly (tannic acid) nanoparticles

Analytica Chimica Acta, Journal Year: 2023, Volume and Issue: 1263, P. 341280 - 341280

Published: April 25, 2023

Language: Английский

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Advancements in fluorescent probes for nitrite sensing: A review

Journal of Molecular Structure, Journal Year: 2023, Volume and Issue: 1296, P. 136926 - 136926

Published: Oct. 23, 2023

Language: Английский

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Micelle-Assisted Confined Coordination Spaces for Benzimidazole: Enhanced Electrochemiluminescence for Nitrite Determination

ACS Sensors, Journal Year: 2024, Volume and Issue: 9(1), P. 337 - 343

Published: Jan. 9, 2024

Selective and sensitive detection of nitrite has important medical biological implications. In the present work, to obtain an enhanced electrochemiluminescence (ECL) determination nitrite, a novel nano-ECL emitter CoBIM/cetyltrimethylammonium bromide (CTAB) was prepared via micelle–assisted, energy-saving, ecofriendly method based on benzimidazole (BIM) CTAB. Unlike conventional micelle assistance, deprotonated BIM (BIM–) preferential placement in palisade layer cationic CTAB-based micelles. Enriching original CTAB with BIM– disrupted its stability resulted formation considerably smaller BIM/CTAB-based micelles, providing confined coordination environment for Co2+. As result, growth CoBIM/CTAB also limited. Owing unusual nitration reaction between successfully applied as ECL probe wide linear range 1–1500 μM low limit 0.67 μM. This work provides promising platform ultrasensitive monitoring it sausages pickled vegetables.

Language: Английский

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Donor–π–acceptor conjugated microporous polymers for photocatalytic organic conversion with photogenerated carrier separation ability by an embedded electric field along the molecular chain

Applied Catalysis A General, Journal Year: 2024, Volume and Issue: 671, P. 119576 - 119576

Published: Jan. 21, 2024

Language: Английский

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An intelligent sensing platform for discrimination of formaldehyde and nitrite in food

Chinese Chemical Letters, Journal Year: 2025, Volume and Issue: unknown, P. 110840 - 110840

Published: Jan. 1, 2025

Language: Английский

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Electrochemical Nitrite Sensing Using Mass Transfer Signal with a Catalyst-Free Small-Sized Rotating Disk Electrode for Wastewater Monitoring

Water Research, Journal Year: 2025, Volume and Issue: 277, P. 123346 - 123346

Published: Feb. 21, 2025

Language: Английский

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