A Carbon Dots-Cobalt Oxyhydroxide-Based Dual Optical Nanosensor for ppb-Level Detection of Sulfide Ions and H2S in Aqueous Media and Alginate Beads DOI

Amanda Ana Pinheiro,

Ankit Thakuri, Sharanabasava D. Hiremath

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(16), P. 19184 - 19193

Published: Aug. 15, 2024

Sulfide ions cause considerable health risks such as loss of olfactory response, organ toxicity, and potentially malignant disorders. In this report, we present the design synthesis a reaction-driven nanosensing assembly based on carbon dots (CDs), cobalt oxyhydroxide nanoflakes (CoOOH NF), 1,2-bis(4-nitrobenzyl) oxy)benzene (DNBC) to detect sulfide in aqueous media. The sensing mechanism relies formation CDs-CoOOH nanoconjugate resulting quenching inherent fluorescence CDs by CoOOH NF via inner filter effect (IFE). three-component nanosensor, protected form catechol, DNBC acts pseudochemodosimeter. Upon addition S2–, it reacts with leads situ generation catechol is revived due catechol-mediated reductive disintegration framework release fluorescent CDs, thus, can be used for fast selective assay ions. This CD-CoOOH-DNBC-based nanosensor displayed nominal response toward cations, anions, small molecules, several other reducing agents offered low limit detection 0.77 ppb (24 nM). works effectively dissolved H2S gas water providing linear response. practical applicability was tested determining spiked real samples good recovery. Solid-phase S2– demonstrated using sodium alginate beads establish ability cost-effective onsite detection.

Language: Английский

Polydiacetylene (PDA) Embedded Polymer-Based Network Structure for Biosensor Applications DOI Creative Commons
Huisoo Jang, Jisoo Jeon, Mingyeong Shin

et al.

Gels, Journal Year: 2025, Volume and Issue: 11(1), P. 66 - 66

Published: Jan. 15, 2025

Biosensors, which combine physical transducers with biorecognition elements, have seen significant advancement due to the heightened interest in rapid diagnostic technologies across a number of fields, including medical diagnostics, environmental monitoring, and food safety. In particular, polydiacetylene (PDA) is gaining attention as an ideal material for label-free colorimetric biosensor development its unique color-changing properties response external stimuli. PDA forms through self-assembly diacetylene monomers, color change occurring conjugated backbone twists stimuli such temperature, pH, chemical interactions. This enables detection biomarkers, metal ions, toxic compounds. Moreover, combination polymeric structures hydrogels further enhances sensitivity structural stability PDA-based biosensors, making them reliable effective complex biological conditions. review comprehensively examines recent research trends applications PDA–polymeric structure hybrid while discussing future directions potential advancements this field.

Language: Английский

Citations

2
Sulfonate Thiacalixarene-Modified Polydiacetylene Vesicles as Colorimetric Sensors for Lead Ion Detection DOI Creative Commons

Angelina A. Fedoseeva,

Indira Yespanova,

Elza D. Sultanova

et al.

Colloids and Interfaces, Journal Year: 2025, Volume and Issue: 9(2), P. 20 - 20

Published: March 28, 2025

We report the first synthesis of zwitterionic thiacalixarenes featuring imidazolium and sulfonate groups on upper rim alkyl (butyl or octyl) fragments lower platform. Despite their amphiphilic structure, these macrocycles exhibit limited water solubility. However, dynamic light scattering detected formation associates for derivatives with octyl moieties at a concentration 0.1 mM. To develop stable materials aqueous environments to investigate functionality sulfonate-imidazolium along thiacalixarene platform, mixed organo-organic systems based polydiacetylene polymer were created. Characterization modified through various analytical methods revealed significant colorimetric response lead ions in media, surpassing that unmodified polymer. Additionally, polymers demonstrated efficacy purifying media from ions, as evidenced by anodic stripping voltammetry (ASV) microwave plasma atomic emission spectroscopy (MP AES).

Language: Английский

Citations

0
Polydiacetylene Liposome-Based Dual-Output Optical Sensor for ppb Level Detection of Dopamine in Solution and Solid Phases DOI
Ankit Thakuri, Mainak Banerjee, Amrita Chatterjee

et al.

Langmuir, Journal Year: 2024, Volume and Issue: 40(33), P. 17613 - 17621

Published: Aug. 9, 2024

Dopamine (DA), a neurotransmitter, plays crucial role in regulating motor functions and emotions can serve as marker for several diseases. In this study, we report highly sensitive polydiacetylenes (PDA)-based dual-output sensor dopamine detection both solution solid phases that was developed by modifying PDA liposomes with boronic acid groups at the termini. This exploits high affinity between catechol residue of -B(OH)

Language: Английский

Citations

2
A Carbon Dots-Cobalt Oxyhydroxide-Based Dual Optical Nanosensor for ppb-Level Detection of Sulfide Ions and H2S in Aqueous Media and Alginate Beads DOI

Amanda Ana Pinheiro,

Ankit Thakuri, Sharanabasava D. Hiremath

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(16), P. 19184 - 19193

Published: Aug. 15, 2024

Sulfide ions cause considerable health risks such as loss of olfactory response, organ toxicity, and potentially malignant disorders. In this report, we present the design synthesis a reaction-driven nanosensing assembly based on carbon dots (CDs), cobalt oxyhydroxide nanoflakes (CoOOH NF), 1,2-bis(4-nitrobenzyl) oxy)benzene (DNBC) to detect sulfide in aqueous media. The sensing mechanism relies formation CDs-CoOOH nanoconjugate resulting quenching inherent fluorescence CDs by CoOOH NF via inner filter effect (IFE). three-component nanosensor, protected form catechol, DNBC acts pseudochemodosimeter. Upon addition S2–, it reacts with leads situ generation catechol is revived due catechol-mediated reductive disintegration framework release fluorescent CDs, thus, can be used for fast selective assay ions. This CD-CoOOH-DNBC-based nanosensor displayed nominal response toward cations, anions, small molecules, several other reducing agents offered low limit detection 0.77 ppb (24 nM). works effectively dissolved H2S gas water providing linear response. practical applicability was tested determining spiked real samples good recovery. Solid-phase S2– demonstrated using sodium alginate beads establish ability cost-effective onsite detection.

Language: Английский

Citations

0