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Optimised thermally driven molecular stability of an SCO metal complex for TEC Seebeck generation enhancement

The thermoelectricity effect allows the generation of electrical potential in an electrolyte upon application of a thermal gradient. In the previous work, the spin crossover effect in metal complexes was shown to be beneficial for generating a high Seebeck coefficient due to the high entropy associa...

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Autores principales: Megat Hasnan, Megat Muhammad Ikhsan, Mohd Said, Suhana, Mohd Sabri, Mohd Faizul, Mat Hussin, Siti Amira, Abdullah, Norbani, Nik Ibrahim, Nik Muhd Jazli, Miyazaki, Yuzuru, Mohd Salleh, Mohd Faiz, Mohd Shah, Noraisyah
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9062524/
https://www.ncbi.nlm.nih.gov/pubmed/35515272
http://dx.doi.org/10.1039/c9ra00779b
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author Megat Hasnan, Megat Muhammad Ikhsan
Mohd Said, Suhana
Mohd Sabri, Mohd Faizul
Mat Hussin, Siti Amira
Abdullah, Norbani
Nik Ibrahim, Nik Muhd Jazli
Miyazaki, Yuzuru
Mohd Salleh, Mohd Faiz
Mohd Shah, Noraisyah
author_facet Megat Hasnan, Megat Muhammad Ikhsan
Mohd Said, Suhana
Mohd Sabri, Mohd Faizul
Mat Hussin, Siti Amira
Abdullah, Norbani
Nik Ibrahim, Nik Muhd Jazli
Miyazaki, Yuzuru
Mohd Salleh, Mohd Faiz
Mohd Shah, Noraisyah
author_sort Megat Hasnan, Megat Muhammad Ikhsan
collection PubMed
description The thermoelectricity effect allows the generation of electrical potential in an electrolyte upon application of a thermal gradient. In the previous work, the spin crossover effect in metal complexes was shown to be beneficial for generating a high Seebeck coefficient due to the high entropy associated with the conformational change accompanying the spin state change. In this study, we examine the diamagnetic stability of a spin crossover material through optimisation of the ligand chain length. We show that the diamagnetic stability of the spin crossover material can enhance the thermoelectrochemical Seebeck effect through ligand optimisation of the octahedral structure. The increase of carbon chain length from C(14) to C(16) in the long alkyl chain of the N-donor ligand increased Seebeck generation in a Co(iii)L16 complex to 1.94-fold that of a previously studied paramagnetic Co complex, and in a Fe(iii)L16 complex to 3.43-fold that of a less diamagnetic Fe complex. We show with DSC studies of an Fe based octahedral complex that an endothermic absorption accompanies the spin crossover transition, which enhances the Seebeck coefficient of this metal complex. Thus, we can correlate the diamagnetic stabilisation with temperature. We therefore indicate a molecular design strategy for optimisation of a spin crossover metal complex.
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spelling pubmed-90625242022-05-04 Optimised thermally driven molecular stability of an SCO metal complex for TEC Seebeck generation enhancement Megat Hasnan, Megat Muhammad Ikhsan Mohd Said, Suhana Mohd Sabri, Mohd Faizul Mat Hussin, Siti Amira Abdullah, Norbani Nik Ibrahim, Nik Muhd Jazli Miyazaki, Yuzuru Mohd Salleh, Mohd Faiz Mohd Shah, Noraisyah RSC Adv Chemistry The thermoelectricity effect allows the generation of electrical potential in an electrolyte upon application of a thermal gradient. In the previous work, the spin crossover effect in metal complexes was shown to be beneficial for generating a high Seebeck coefficient due to the high entropy associated with the conformational change accompanying the spin state change. In this study, we examine the diamagnetic stability of a spin crossover material through optimisation of the ligand chain length. We show that the diamagnetic stability of the spin crossover material can enhance the thermoelectrochemical Seebeck effect through ligand optimisation of the octahedral structure. The increase of carbon chain length from C(14) to C(16) in the long alkyl chain of the N-donor ligand increased Seebeck generation in a Co(iii)L16 complex to 1.94-fold that of a previously studied paramagnetic Co complex, and in a Fe(iii)L16 complex to 3.43-fold that of a less diamagnetic Fe complex. We show with DSC studies of an Fe based octahedral complex that an endothermic absorption accompanies the spin crossover transition, which enhances the Seebeck coefficient of this metal complex. Thus, we can correlate the diamagnetic stabilisation with temperature. We therefore indicate a molecular design strategy for optimisation of a spin crossover metal complex. The Royal Society of Chemistry 2019-04-04 /pmc/articles/PMC9062524/ /pubmed/35515272 http://dx.doi.org/10.1039/c9ra00779b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Megat Hasnan, Megat Muhammad Ikhsan
Mohd Said, Suhana
Mohd Sabri, Mohd Faizul
Mat Hussin, Siti Amira
Abdullah, Norbani
Nik Ibrahim, Nik Muhd Jazli
Miyazaki, Yuzuru
Mohd Salleh, Mohd Faiz
Mohd Shah, Noraisyah
Optimised thermally driven molecular stability of an SCO metal complex for TEC Seebeck generation enhancement
title Optimised thermally driven molecular stability of an SCO metal complex for TEC Seebeck generation enhancement
title_full Optimised thermally driven molecular stability of an SCO metal complex for TEC Seebeck generation enhancement
title_fullStr Optimised thermally driven molecular stability of an SCO metal complex for TEC Seebeck generation enhancement
title_full_unstemmed Optimised thermally driven molecular stability of an SCO metal complex for TEC Seebeck generation enhancement
title_short Optimised thermally driven molecular stability of an SCO metal complex for TEC Seebeck generation enhancement
title_sort optimised thermally driven molecular stability of an sco metal complex for tec seebeck generation enhancement
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9062524/
https://www.ncbi.nlm.nih.gov/pubmed/35515272
http://dx.doi.org/10.1039/c9ra00779b
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