Capped Fluorescent Carbon Dots for Detection of Hemin: Role of Number of –OH Groups of Capping Agent in Fluorescence Quenching

We have successfully demonstrated the use of capped carbon dot systems, namely, CDs/β-cd, CDs/LMH, and CDs/Suc, as fluorescent sensors for the detection of hemin. The capped carbon dot systems showed quenching of PL intensity in the presence of hemin. The minimum detection limit was determined to be...

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Autores principales: Baruah, Upama, Gogoi, Neelam, Majumdar, Gitanjali, Chowdhury, Devasish
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2013
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3888723/
https://www.ncbi.nlm.nih.gov/pubmed/24453870
http://dx.doi.org/10.1155/2013/529159
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author Baruah, Upama
Gogoi, Neelam
Majumdar, Gitanjali
Chowdhury, Devasish
author_facet Baruah, Upama
Gogoi, Neelam
Majumdar, Gitanjali
Chowdhury, Devasish
author_sort Baruah, Upama
collection PubMed
description We have successfully demonstrated the use of capped carbon dot systems, namely, CDs/β-cd, CDs/LMH, and CDs/Suc, as fluorescent sensors for the detection of hemin. The capped carbon dot systems showed quenching of PL intensity in the presence of hemin. The minimum detection limit was determined to be ~1 μM. The PL response with free Fe(II) and Fe(III) was also studied. It was observed that PL quenching of capped carbon dot systems in the presence of hemin is dependent on the number of –OH groups in the capping agent. The order of quenching towards hemin was determined to be CDs/β-cd > CDs/LMH = CDs/Suc > CDs. A possible mechanism to account for the observation is also discussed in the paper.
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spelling pubmed-38887232014-01-22 Capped Fluorescent Carbon Dots for Detection of Hemin: Role of Number of –OH Groups of Capping Agent in Fluorescence Quenching Baruah, Upama Gogoi, Neelam Majumdar, Gitanjali Chowdhury, Devasish ScientificWorldJournal Research Article We have successfully demonstrated the use of capped carbon dot systems, namely, CDs/β-cd, CDs/LMH, and CDs/Suc, as fluorescent sensors for the detection of hemin. The capped carbon dot systems showed quenching of PL intensity in the presence of hemin. The minimum detection limit was determined to be ~1 μM. The PL response with free Fe(II) and Fe(III) was also studied. It was observed that PL quenching of capped carbon dot systems in the presence of hemin is dependent on the number of –OH groups in the capping agent. The order of quenching towards hemin was determined to be CDs/β-cd > CDs/LMH = CDs/Suc > CDs. A possible mechanism to account for the observation is also discussed in the paper. Hindawi Publishing Corporation 2013-12-28 /pmc/articles/PMC3888723/ /pubmed/24453870 http://dx.doi.org/10.1155/2013/529159 Text en Copyright © 2013 Upama Baruah et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Baruah, Upama
Gogoi, Neelam
Majumdar, Gitanjali
Chowdhury, Devasish
Capped Fluorescent Carbon Dots for Detection of Hemin: Role of Number of –OH Groups of Capping Agent in Fluorescence Quenching
title Capped Fluorescent Carbon Dots for Detection of Hemin: Role of Number of –OH Groups of Capping Agent in Fluorescence Quenching
title_full Capped Fluorescent Carbon Dots for Detection of Hemin: Role of Number of –OH Groups of Capping Agent in Fluorescence Quenching
title_fullStr Capped Fluorescent Carbon Dots for Detection of Hemin: Role of Number of –OH Groups of Capping Agent in Fluorescence Quenching
title_full_unstemmed Capped Fluorescent Carbon Dots for Detection of Hemin: Role of Number of –OH Groups of Capping Agent in Fluorescence Quenching
title_short Capped Fluorescent Carbon Dots for Detection of Hemin: Role of Number of –OH Groups of Capping Agent in Fluorescence Quenching
title_sort capped fluorescent carbon dots for detection of hemin: role of number of –oh groups of capping agent in fluorescence quenching
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3888723/
https://www.ncbi.nlm.nih.gov/pubmed/24453870
http://dx.doi.org/10.1155/2013/529159
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