Dual-signal ratiometric fluorescence detection of cholesterol using a CYS@Zn/CDs/cholesterol oxidase system DOI
Shaker T. Alsharif,

Ashraf M. Mahmoud,

Mohamed M. El‐Wekil

et al.

Microchemical Journal, Journal Year: 2024, Volume and Issue: unknown, P. 112618 - 112618

Published: Dec. 1, 2024

Language: Английский

Dual-Modulation ratiometric fluorescence strategy for cobalt and topotecan detection using Red-Emissive carbon dots DOI
Ali Alaseem, Khalid Alhazzani, Ahmed Z. Alanazi

et al.

Microchemical Journal, Journal Year: 2024, Volume and Issue: 201, P. 110645 - 110645

Published: April 27, 2024

Language: Английский

Citations

16

Ratiometric Sensing of Azithromycin and Sulfide Using Dual Emissive Carbon Dots: A Turn On-Off-On Approach DOI

Ashraf M. Mahmoud,

Yahya S. Alqahtani, Mohamed M. El‐Wekil

et al.

Journal of Fluorescence, Journal Year: 2024, Volume and Issue: unknown

Published: May 1, 2024

Language: Английский

Citations

16

A novel urease-assisted ratiometric fluorescence sensing platform based on pH-modulated copper-quenched near-infrared carbon dots and methyl red-quenched red carbon dots for selective urea monitoring DOI
Ahmed Z. Alanazi, Khalid Alhazzani, Aya M. Mostafa

et al.

Microchimica Acta, Journal Year: 2024, Volume and Issue: 191(8)

Published: Aug. 1, 2024

Language: Английский

Citations

12

Enhanced dual fluorescence quenching of red and blue emission carbon dots by copper dimethyldithiocarbamate for selective ratiometric detection of ziram in foodstuff and water samples DOI
Khalid Alhazzani, Ahmed Z. Alanazi, Aya M. Mostafa

et al.

Microchemical Journal, Journal Year: 2024, Volume and Issue: 204, P. 111092 - 111092

Published: June 29, 2024

Language: Английский

Citations

11

Exploiting the pH-responsive behavior of zinc-dithizone complex for fluorometric urea sensing utilizing red-emission carbon dots DOI
Khalid Alhazzani, Ahmed Z. Alanazi, Aya M. Mostafa

et al.

Microchemical Journal, Journal Year: 2024, Volume and Issue: 204, P. 111129 - 111129

Published: July 5, 2024

Language: Английский

Citations

10

Dual-emission ratiometric fluorometric platform using Cu@NCDs/eosin system for sensitive detection of metformin: Pharmacokinetic studies in normal and disease states DOI
Yousef A. Bin Jardan, Mohamed M. El‐Wekil, Aya M. Mostafa

et al.

Microchemical Journal, Journal Year: 2025, Volume and Issue: unknown, P. 112789 - 112789

Published: Jan. 1, 2025

Language: Английский

Citations

1

Smart fluorometric sensing of metal contaminants in canned foods: a carbon dot-based dual-response system for quantifying aluminum and cobalt ions DOI Creative Commons

Al‐Montaser Bellah H. Ali,

Mohamed R. Elmasry, Yousef A. Bin Jardan

et al.

RSC Advances, Journal Year: 2025, Volume and Issue: 15(9), P. 6962 - 6973

Published: Jan. 1, 2025

The leaching of aluminum and cobalt ions into canned foods, such as from tomato sauce tuna, raises concerns about potential health risks, making their accurate detection essential for food safety. In this study, we developed a novel ratiometric fluorometric sensor based on dual-emission carbon dots capable selectively detecting (Al3+) (Co2+) after single excitation. exhibits distinct fluorescence responses: enhance the emission at 403 nm due to interactions with nitrogen sulfur groups dot surface, while Al3+ 532 through binding oxygen-rich carboxyl hydroxyl. This differential response stems varying affinities these metal different functional groups, confirmed mechanistic studies comprehensive characterization dots, including TEM, UV-Vis, FTIR, lifetime analyses. method demonstrates excellent sensitivity, limits (LOD) 0.012 μM Co2+ 0.06 Al3+. sensor's performance was validated real samples, successfully determining in tuna. exhibited high selectivity minimal interference, achieving recovery rates 97.50-100.67% 97.01-98.02% Co2+. These findings underscore robustness practical applicability proposed reliable tool monitoring ensuring safety compliance regulatory standards.

Language: Английский

Citations

1

Dual modulation of blue-fluorescent carbon dots for simultaneous detection of topotecan and pantoprazole DOI

Ashraf M. Mahmoud,

Yahya S. Alqahtani, Mohamed M. El‐Wekil

et al.

Analytical Methods, Journal Year: 2024, Volume and Issue: 16(20), P. 3287 - 3296

Published: Jan. 1, 2024

Simultaneous determination of topotecan and pantoprazole.

Language: Английский

Citations

8

L-asparaginase-mediated pH shift and carbon dot fluorescence modulation: A sensitive ratiometric method for quantifying L-asparagine in diverse potato varieties under variable storage conditions DOI
Khalid Alhazzani, Ahmed Z. Alanazi, Hossieny Ibrahim

et al.

Food Chemistry, Journal Year: 2024, Volume and Issue: 463, P. 141396 - 141396

Published: Sept. 23, 2024

Language: Английский

Citations

8

pH-Sensitive blue and red N-CDs for L-asparaginase quantification in complex biological matrices DOI
Ahmed Z. Alanazi, Khalid Alhazzani, Hossieny Ibrahim

et al.

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Journal Year: 2024, Volume and Issue: 325, P. 125161 - 125161

Published: Sept. 19, 2024

Language: Английский

Citations

6