Ultra-high Seebeck coefficient of a thermal sensor through entropic optimisation of ligand length of Fe(ii) spin-crossover (SCO) materials
In this work, we present a spin-crossover (SCO) complex molecular formulation [Fe(Ln)2](BF4)2 in an electrochemical single couple solution. A Seebeck voltage arises when an electrochemical single couple solution is subjected to a temperature difference, resulting in a single couple reaction at eithe...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Royal Society of Chemistry
2021
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| Online Access: | http://psasir.upm.edu.my/id/eprint/93456/ http://psasir.upm.edu.my/id/eprint/93456/1/93456.pdf |
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| author | Che Hassan, Hazirah Mohd Said, Suhana Nik Ibrahim, Nik Muhd Jazli Megat Hasnan, Megat Muhammad Ikhsan Mohd Noor, Ikhwan Syafiq Zakaria, Rozalina Mohd Salleh, Mohd Faiz Md. Noor, Nur Linahafizza Abdullah, Norbani |
| author_facet | Che Hassan, Hazirah Mohd Said, Suhana Nik Ibrahim, Nik Muhd Jazli Megat Hasnan, Megat Muhammad Ikhsan Mohd Noor, Ikhwan Syafiq Zakaria, Rozalina Mohd Salleh, Mohd Faiz Md. Noor, Nur Linahafizza Abdullah, Norbani |
| author_sort | Che Hassan, Hazirah |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | In this work, we present a spin-crossover (SCO) complex molecular formulation [Fe(Ln)2](BF4)2 in an electrochemical single couple solution. A Seebeck voltage arises when an electrochemical single couple solution is subjected to a temperature difference, resulting in a single couple reaction at either terminal of the electrochemical cell. The ultrahigh Seebeck coefficients were obtained due to a number of molecular optimisation strategies. The [Fe(L16)2](BF4)2 complex demonstrated a maximum Seebeck coefficient of 8.67 mV K−1, achieved through a six-pronged approach to maximise entropy during the transition from low spin (LS) to high spin (HS) through: (i) a change in spin state, (ii) a change in physical liquid crystalline state, (iii) the spin Seebeck effect, (iv) the kosmotropic and chaotropic effect, (v) the fastener effect and (vi) thermal heat absorbance. A reduction of the Seebeck coefficient to 1.68 mV K−1 during the HS–LS transition at higher temperatures is related to the single spin state transition entropy change. In summary, this paper presents a systematic study to identify the contributing factors in the production of a sensor with an ultrahigh Seebeck coefficient for energy harvesting through the optimisation of its molecular entropy elements. |
| first_indexed | 2025-11-15T13:07:40Z |
| format | Article |
| id | upm-93456 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T13:07:40Z |
| publishDate | 2021 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-934562025-06-23T03:58:46Z http://psasir.upm.edu.my/id/eprint/93456/ Ultra-high Seebeck coefficient of a thermal sensor through entropic optimisation of ligand length of Fe(ii) spin-crossover (SCO) materials Che Hassan, Hazirah Mohd Said, Suhana Nik Ibrahim, Nik Muhd Jazli Megat Hasnan, Megat Muhammad Ikhsan Mohd Noor, Ikhwan Syafiq Zakaria, Rozalina Mohd Salleh, Mohd Faiz Md. Noor, Nur Linahafizza Abdullah, Norbani In this work, we present a spin-crossover (SCO) complex molecular formulation [Fe(Ln)2](BF4)2 in an electrochemical single couple solution. A Seebeck voltage arises when an electrochemical single couple solution is subjected to a temperature difference, resulting in a single couple reaction at either terminal of the electrochemical cell. The ultrahigh Seebeck coefficients were obtained due to a number of molecular optimisation strategies. The [Fe(L16)2](BF4)2 complex demonstrated a maximum Seebeck coefficient of 8.67 mV K−1, achieved through a six-pronged approach to maximise entropy during the transition from low spin (LS) to high spin (HS) through: (i) a change in spin state, (ii) a change in physical liquid crystalline state, (iii) the spin Seebeck effect, (iv) the kosmotropic and chaotropic effect, (v) the fastener effect and (vi) thermal heat absorbance. A reduction of the Seebeck coefficient to 1.68 mV K−1 during the HS–LS transition at higher temperatures is related to the single spin state transition entropy change. In summary, this paper presents a systematic study to identify the contributing factors in the production of a sensor with an ultrahigh Seebeck coefficient for energy harvesting through the optimisation of its molecular entropy elements. Royal Society of Chemistry 2021 Article PeerReviewed text en cc_by_nc http://psasir.upm.edu.my/id/eprint/93456/1/93456.pdf Che Hassan, Hazirah and Mohd Said, Suhana and Nik Ibrahim, Nik Muhd Jazli and Megat Hasnan, Megat Muhammad Ikhsan and Mohd Noor, Ikhwan Syafiq and Zakaria, Rozalina and Mohd Salleh, Mohd Faiz and Md. Noor, Nur Linahafizza and Abdullah, Norbani (2021) Ultra-high Seebeck coefficient of a thermal sensor through entropic optimisation of ligand length of Fe(ii) spin-crossover (SCO) materials. RSC Advances, 11 (34). pp. 20970-20982. ISSN 2046-2069; eISSN: 2046-2069 https://pubs.rsc.org/en/content/articlelanding/2021/ra/d1ra01387d 10.1039/D1RA01387D |
| spellingShingle | Che Hassan, Hazirah Mohd Said, Suhana Nik Ibrahim, Nik Muhd Jazli Megat Hasnan, Megat Muhammad Ikhsan Mohd Noor, Ikhwan Syafiq Zakaria, Rozalina Mohd Salleh, Mohd Faiz Md. Noor, Nur Linahafizza Abdullah, Norbani Ultra-high Seebeck coefficient of a thermal sensor through entropic optimisation of ligand length of Fe(ii) spin-crossover (SCO) materials |
| title | Ultra-high Seebeck coefficient of a thermal sensor through entropic optimisation of ligand length of Fe(ii) spin-crossover (SCO) materials |
| title_full | Ultra-high Seebeck coefficient of a thermal sensor through entropic optimisation of ligand length of Fe(ii) spin-crossover (SCO) materials |
| title_fullStr | Ultra-high Seebeck coefficient of a thermal sensor through entropic optimisation of ligand length of Fe(ii) spin-crossover (SCO) materials |
| title_full_unstemmed | Ultra-high Seebeck coefficient of a thermal sensor through entropic optimisation of ligand length of Fe(ii) spin-crossover (SCO) materials |
| title_short | Ultra-high Seebeck coefficient of a thermal sensor through entropic optimisation of ligand length of Fe(ii) spin-crossover (SCO) materials |
| title_sort | ultra-high seebeck coefficient of a thermal sensor through entropic optimisation of ligand length of fe(ii) spin-crossover (sco) materials |
| url | http://psasir.upm.edu.my/id/eprint/93456/ http://psasir.upm.edu.my/id/eprint/93456/ http://psasir.upm.edu.my/id/eprint/93456/ http://psasir.upm.edu.my/id/eprint/93456/1/93456.pdf |