Recent Advances and Trends in the Applications of Nanomaterials in Optical Sensing Platforms

TrAC Trends in Analytical Chemistry, Journal Year: 2024, Volume and Issue: 180, P. 117914 - 117914

Published: Aug. 13, 2024

Language: Английский

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Smartphones as a platform for molecular analysis: concepts, methods, devices and future potential

Lab on a Chip, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Smartphones have the potential to transform chemical and biological analysis by functioning as portable, versatile, democratized platforms for molecular diagnostics. Recent advances in optical detection devices are reviewed.

Language: Английский

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Water-stable Eu(III) coordination polymer-based ratiometric fluorescence sensor integrated with smartphone for onsite monitoring of doxycycline hydrochloride in milk

Microchimica Acta, Journal Year: 2025, Volume and Issue: 192(4)

Published: March 12, 2025

Language: Английский

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Applications of Machine Learning Predictive Modeling for Carbon Quantum Dots

Challenges and advances in computational chemistry and physics, Journal Year: 2025, Volume and Issue: unknown, P. 81 - 108

Published: Jan. 1, 2025

Language: Английский

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Fluorescent and smartphone-assisted colorimetric dual-mode sensor for Ag+ detection based on orange-red emitting carbon dots

Materials Today Chemistry, Journal Year: 2023, Volume and Issue: 33, P. 101730 - 101730

Published: Sept. 26, 2023

Language: Английский

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A series of viologen complexes containing thiophene and Br⁻ dual fluorescent chromophores for continuous visual sensing of pH and Hg²⁺

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(6), P. 2741 - 2748

Published: Jan. 1, 2024

Complexes 1–3 exhibited excellent pH sensing and Hg 2+ capabilities in both methanol PBS buffer solutions. The interaction between Br − , the thiophene S atoms complexes 2–3, resulted a distinctive dual-signal mode.

Language: Английский

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Deciphering Alloy Composition in Superconducting Single-Layer FeSe_1–xS_x on SrTiO₃(001) Substrates by Machine Learning of STM/S Data

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(18), P. 22644 - 22650

Published: May 1, 2023

Scanning tunneling microscopy (STM) is a powerful technique for imaging atomic structure and inferring information on local elemental composition, chemical bonding, electronic excitations. However, plain visual analysis of STM images can be challenging such determination in multicomponent alloys, particularly beyond the diluted limit due to disorder inhomogeneity. One viable solution use machine learning analyze data identify hidden patterns correlations. Here, we apply this approach determine Se/S concentration superconducting single-layer FeSe1-xSx alloys epitaxially grown SrTiO3(001) substrates via molecular beam epitaxy. First, K-means clustering method applied defect-related dI/dV spectra taken by current spectroscopy. Then, ratio calculated analyzing remaining based singular value decomposition method. Such provides an efficient reliable alloy composition further reveals correlations nanoscale inhomogeneity superconductivity iron chalcogenide films.

Language: Английский

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Advances in the ratiometric combination of quantum dots for their use in sensing applications

Materials Advances, Journal Year: 2023, Volume and Issue: 4(20), P. 4646 - 4664

Published: Jan. 1, 2023

Quantum dots are novel nanomaterials due to their nanoscale size and diverse characteristics. They serve as low-cost visual sensors, widely studied for sensing applications, including ratiometric combinations, enhance the limit of detection.

Language: Английский

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An Azomethine-H-Based Fluorogenic Sensor for Formic Acid

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(37), P. 43880 - 43886

Published: Sept. 6, 2023

Formic acid (FA) is an important C1-containing feedstock that serves as a masked source of dihydrogen gas (H2). To encourage the adoption cleaner (noncarbonaceous) energy sources, FA detection and sensing thus considerable interest. Here, we examine use commercially available dye, azomethine-H (Az-H), for sensing. Solution studies confirm quenches both absorbance luminescence properties Az-H. was additionally found to attenuate known Az-H (E)-to-(Z) conformational change, suggesting Az-H/FA interaction, possibly through hydrogen bonding; this phenomenon probed using 1H NMR spectroscopy. Moving toward solid-state sensor, probe incorporated into gelatin-based matrix. On exposure FA, system increase in FA-dependent manner, attributed formation stable hydrogen-bonded structures, facilitating (Z)-to-(E) isomerization via imine protonation, allowing production more luminescent (E)-isomer. This fluorogenic signal used sensor with estimated limit ca. 0.4 ppb vapor. work constitutes step highly sensitive solution solid state, opening new space organic acids differing chemical environments.

Language: Английский

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A graphitic C₃N₄ nanocomposite-based fluorescence platform for label-free analysis of trace mercury ions

Analytical Methods, Journal Year: 2024, Volume and Issue: 16(6), P. 930 - 938

Published: Jan. 1, 2024

In this study, a nanocomposite consisting of graphitic carbon nitride nanosheets loaded with quantum dots (CNQDs/CNNNs) was synthesized via one-step pyrolysis method. This exhibited excellent thermal stability, photobleaching and salt resistance. Then new fluorescence sensing platform based on CNQDs/CNNNs constructed, which showed high sensitivity selectivity towards trace mercury ions (Hg2+). By using X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectra density functional theory, the response mechanism elucidated where Hg2+ could interact CNQDs/CNNNs, causing structural change in nanocomposite, further affecting its bandgap structure, finally leading to quenching. The linear range for detecting found be 0.025-4.0 μmol L-1, detection limit 7.82 nmol L-1. strategy provided advantages rapid broad range, making it suitable quantitative environmental water.

Language: Английский

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