Influence of TTAB/14-S-14 Micelles on the Rate of the Condensation between Ninhydrin and Mercury-Dipeptide Complex in Absence and Presence of Salts and Organic Solvents: A Kinetic Approach
The interaction of mercury(II)–glycyl-L-alanine [Hg(II)–Gly-L-Ala]+ complex with ninhydrin has been studied kinetically both in aqueous as well as micellar media (cationic conventional/gemini surfactants) using UV-vis spectrophotometer at 70 ºC and a particular pH 5.0. The study was carried out as f...
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| Format: | Article |
| Language: | Arabic |
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university of Aden
2020-03-01
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| Series: | مجلّة جامعة عدن للعلوم الأساسيّة والتّطبيقيّة |
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| Online Access: | https://ejua.net/index.php/EJUA-BA/article/view/3 |
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| author | Adel A. M. Saeed Taher A. A. Salem Mohammed Akram |
| author_facet | Adel A. M. Saeed Taher A. A. Salem Mohammed Akram |
| author_sort | Adel A. M. Saeed |
| collection | DOAJ |
| description | The interaction of mercury(II)–glycyl-L-alanine [Hg(II)–Gly-L-Ala]+ complex with ninhydrin has been studied kinetically both in aqueous as well as micellar media (cationic conventional/gemini surfactants) using UV-vis spectrophotometer at 70 ºC and a particular pH 5.0. The study was carried out as functions of [Hg(II)–Gly-L-Ala]+, [ninhydrin], [surfactant] [salts], and solvents (%v/v). The first-order-rate is observed concerning [Hg(II)–Gly-L-Ala]+, whereas fractional-order-rate dependence for [ninhydrin]. It has been found that 14-s-14 geminis enhance the rate of reaction more effectively than related cationic conventional surfactant tetradecyltrimethylammonium bromide (TTAB). The effect of additives such as salts (inorganic/organic) and organic solvents on the rate was also investigated. The reaction rate was explained in terms of the modified pseudo phase model (considering the association/adsorption of both the reactants on the micellar surface) and changes in micellar morphology occurring at higher [geminis]. The Eyring equation is valid for the reaction over the range of temperatures used. Various thermodynamic parameters and binding constants between reactants with the micelles have been evaluated. |
| first_indexed | 2024-12-17T10:10:06Z |
| format | Article |
| id | doaj.art-2b01cd7f31314290bade36adaa355a4a |
| institution | Directory Open Access Journal |
| issn | 2708-0684 |
| language | Arabic |
| last_indexed | 2024-12-17T10:10:06Z |
| publishDate | 2020-03-01 |
| publisher | university of Aden |
| record_format | Article |
| series | مجلّة جامعة عدن للعلوم الأساسيّة والتّطبيقيّة |
| spelling | doaj.art-2b01cd7f31314290bade36adaa355a4a2022-12-21T21:53:03Zarauniversity of Adenمجلّة جامعة عدن للعلوم الأساسيّة والتّطبيقيّة2708-06842020-03-011111310.47372/ejua-ba.2020.1.33Influence of TTAB/14-S-14 Micelles on the Rate of the Condensation between Ninhydrin and Mercury-Dipeptide Complex in Absence and Presence of Salts and Organic Solvents: A Kinetic ApproachAdel A. M. Saeed0Taher A. A. Salem1Mohammed Akram2Dept. of Chemistry/Faculty of Science, University of Aden, Aden, YemenDept. of Chemistry/Faculty of Saber Education, University of Aden, Aden, YemenDept. of Chemistry/Faculty of Science,AMU, Aligarh-202002, U.P., IndiaThe interaction of mercury(II)–glycyl-L-alanine [Hg(II)–Gly-L-Ala]+ complex with ninhydrin has been studied kinetically both in aqueous as well as micellar media (cationic conventional/gemini surfactants) using UV-vis spectrophotometer at 70 ºC and a particular pH 5.0. The study was carried out as functions of [Hg(II)–Gly-L-Ala]+, [ninhydrin], [surfactant] [salts], and solvents (%v/v). The first-order-rate is observed concerning [Hg(II)–Gly-L-Ala]+, whereas fractional-order-rate dependence for [ninhydrin]. It has been found that 14-s-14 geminis enhance the rate of reaction more effectively than related cationic conventional surfactant tetradecyltrimethylammonium bromide (TTAB). The effect of additives such as salts (inorganic/organic) and organic solvents on the rate was also investigated. The reaction rate was explained in terms of the modified pseudo phase model (considering the association/adsorption of both the reactants on the micellar surface) and changes in micellar morphology occurring at higher [geminis]. The Eyring equation is valid for the reaction over the range of temperatures used. Various thermodynamic parameters and binding constants between reactants with the micelles have been evaluated.https://ejua.net/index.php/EJUA-BA/article/view/3catalytic effect, [hg(ii)–gly-l-ala] , ninhydrin, gemini surfactants, salts, organic solvents. |
| spellingShingle | Adel A. M. Saeed Taher A. A. Salem Mohammed Akram Influence of TTAB/14-S-14 Micelles on the Rate of the Condensation between Ninhydrin and Mercury-Dipeptide Complex in Absence and Presence of Salts and Organic Solvents: A Kinetic Approach مجلّة جامعة عدن للعلوم الأساسيّة والتّطبيقيّة catalytic effect, [hg(ii)–gly-l-ala] , ninhydrin, gemini surfactants, salts, organic solvents. |
| title | Influence of TTAB/14-S-14 Micelles on the Rate of the Condensation between Ninhydrin and Mercury-Dipeptide Complex in Absence and Presence of Salts and Organic Solvents: A Kinetic Approach |
| title_full | Influence of TTAB/14-S-14 Micelles on the Rate of the Condensation between Ninhydrin and Mercury-Dipeptide Complex in Absence and Presence of Salts and Organic Solvents: A Kinetic Approach |
| title_fullStr | Influence of TTAB/14-S-14 Micelles on the Rate of the Condensation between Ninhydrin and Mercury-Dipeptide Complex in Absence and Presence of Salts and Organic Solvents: A Kinetic Approach |
| title_full_unstemmed | Influence of TTAB/14-S-14 Micelles on the Rate of the Condensation between Ninhydrin and Mercury-Dipeptide Complex in Absence and Presence of Salts and Organic Solvents: A Kinetic Approach |
| title_short | Influence of TTAB/14-S-14 Micelles on the Rate of the Condensation between Ninhydrin and Mercury-Dipeptide Complex in Absence and Presence of Salts and Organic Solvents: A Kinetic Approach |
| title_sort | influence of ttab 14 s 14 micelles on the rate of the condensation between ninhydrin and mercury dipeptide complex in absence and presence of salts and organic solvents a kinetic approach |
| topic | catalytic effect, [hg(ii)–gly-l-ala] , ninhydrin, gemini surfactants, salts, organic solvents. |
| url | https://ejua.net/index.php/EJUA-BA/article/view/3 |
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