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Catalytic influence of 16-s-16 gemini surfactants on the rate constant of histidine and ninhydrin
The present paper reports the catalytic influence of 16-s-16 (spacer (s) = 4, 5, 6) gemini surfactants on the rate constant of histidine and ninhydrin at 343 K and pH 5.0 using the spectrophotometric technique. The effect of varying amounts of geminis was made on the rate constant of histidine and n...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7062088/ https://www.ncbi.nlm.nih.gov/pubmed/32257328 http://dx.doi.org/10.1098/rsos.191648 |
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author | Kumar, Dileep Rub, Malik Abdul |
author_facet | Kumar, Dileep Rub, Malik Abdul |
author_sort | Kumar, Dileep |
collection | PubMed |
description | The present paper reports the catalytic influence of 16-s-16 (spacer (s) = 4, 5, 6) gemini surfactants on the rate constant of histidine and ninhydrin at 343 K and pH 5.0 using the spectrophotometric technique. The effect of varying amounts of geminis was made on the rate constant of histidine and ninhydrin keeping other constituents constant. Characteristics of the rate constant (k(ψ)) versus [gemini] depict the effect of surfactants on the rate constant. A systematic explanation about the effect of surfactants is revealed and discussed in the text. The influence of different parameters that includes [reactants], temperature and pH has also been performed on the study. In order to determine the critical micelle concentration (cmc) of pure surfactants and their solution mixtures, conductivity measurement was employed. By using the Eyring equation, activation parameters at different temperatures have been obtained. The resultant data of k(ψ) versus [gemini] plot were rationalized with the pseudo-phase model of micelles. |
format | Online Article Text |
id | pubmed-7062088 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | The Royal Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-70620882020-03-31 Catalytic influence of 16-s-16 gemini surfactants on the rate constant of histidine and ninhydrin Kumar, Dileep Rub, Malik Abdul R Soc Open Sci Chemistry The present paper reports the catalytic influence of 16-s-16 (spacer (s) = 4, 5, 6) gemini surfactants on the rate constant of histidine and ninhydrin at 343 K and pH 5.0 using the spectrophotometric technique. The effect of varying amounts of geminis was made on the rate constant of histidine and ninhydrin keeping other constituents constant. Characteristics of the rate constant (k(ψ)) versus [gemini] depict the effect of surfactants on the rate constant. A systematic explanation about the effect of surfactants is revealed and discussed in the text. The influence of different parameters that includes [reactants], temperature and pH has also been performed on the study. In order to determine the critical micelle concentration (cmc) of pure surfactants and their solution mixtures, conductivity measurement was employed. By using the Eyring equation, activation parameters at different temperatures have been obtained. The resultant data of k(ψ) versus [gemini] plot were rationalized with the pseudo-phase model of micelles. The Royal Society 2020-02-05 /pmc/articles/PMC7062088/ /pubmed/32257328 http://dx.doi.org/10.1098/rsos.191648 Text en © 2020 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
spellingShingle | Chemistry Kumar, Dileep Rub, Malik Abdul Catalytic influence of 16-s-16 gemini surfactants on the rate constant of histidine and ninhydrin |
title | Catalytic influence of 16-s-16 gemini surfactants on the rate constant of histidine and ninhydrin |
title_full | Catalytic influence of 16-s-16 gemini surfactants on the rate constant of histidine and ninhydrin |
title_fullStr | Catalytic influence of 16-s-16 gemini surfactants on the rate constant of histidine and ninhydrin |
title_full_unstemmed | Catalytic influence of 16-s-16 gemini surfactants on the rate constant of histidine and ninhydrin |
title_short | Catalytic influence of 16-s-16 gemini surfactants on the rate constant of histidine and ninhydrin |
title_sort | catalytic influence of 16-s-16 gemini surfactants on the rate constant of histidine and ninhydrin |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7062088/ https://www.ncbi.nlm.nih.gov/pubmed/32257328 http://dx.doi.org/10.1098/rsos.191648 |
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