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Pregled bibliografske jedinice broj: 1065290

Impact of dehydration and mechanical amorphization on the magnetic properties of Ni(ii)-MOF-74


Muratović, Senada; Karadeniz, Bahar; Stolar, Tomislav; Lukin, Stipe; Halasz, Ivan; Herak, Mirta; Mali, Gregor; Krupskaya, Yulia; Kataev, Vladislav; Žilić, Dijana; Užarević, Krunoslav
Impact of dehydration and mechanical amorphization on the magnetic properties of Ni(ii)-MOF-74 // Journal of Materials Chemistry C, 8 (2020), 7132-7142 doi:10.1039/D0TC00844C (međunarodna recenzija, članak, znanstveni)


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Naslov
Impact of dehydration and mechanical amorphization on the magnetic properties of Ni(ii)-MOF-74

Autori
Muratović, Senada ; Karadeniz, Bahar ; Stolar, Tomislav ; Lukin, Stipe ; Halasz, Ivan ; Herak, Mirta ; Mali, Gregor ; Krupskaya, Yulia ; Kataev, Vladislav ; Žilić, Dijana ; Užarević, Krunoslav

Izvornik
Journal of Materials Chemistry C (2050-7526) 8 (2020); 7132-7142

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
MOF-74 ; Ni(II) ; mechanically responsive MOF ; magnetic MOF ; amorphization ; dehydration ; magnetism ; ESR/EPR ; high and low spin Ni(II) ; spin-crossover

Sažetak
Mechanically responsive metal–organic frameworks (MOFs) came very recently into the spotlight of material science for their unique properties and potential new fields of application. We present here a clarification of the magnetic properties of prototypical magnetic MOF-74 material, Ni(II)-MOF-74, using magnetization measurements, X-band electron spin resonance (ESR), multi-frequency high-field ESR (HF-ESR), and theoretical model. It was established that the guests populating the honeycomb channels have little influence on the magnetism of Ni-MOF-74, whereas magnetic properties change significantly upon mechanical amorphization. Amorphous material (am-Ni-MOF-74), which can be readily prepared by the mechanochemical treatment of dehydrated Ni-MOF-74 (deh-Ni-MOF-74), as shown by in situ monitoring methods, displays significantly lower bulk magnetization compared to Ni-MOF-74 and deh-Ni-MOF-74. This decline in magnetization is established to be a consequence of the spin-crossover from high-spin to a low-spin state of nickel(II) ions. The observed spin-crossover was rationalized by an insight into the changes of the nickel coordination sphere during the amorphization, which was provided by solid-state nuclear magnetic resonance (NMR) and infrared (IR) spectroscopy. Additionally, it was found that am-Ni-MOF-74 behaves differently than its zinc analogue when exposed to vapors or liquid-additives in the milling process, indicating that the nature of the metal node plays a substantial role in the mechanical properties of this modular family of MOF materials.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija, Interdisciplinarne prirodne znanosti



POVEZANOST RADA


Projekt / tema
German (DAAD)-Croatian (MZO) bilateral project
HRZZ-IP-2018-01-3168 - Studija važnosti spinskih međudjelovanja kao osnova za nove pristupe u istraživanju materijala (Marina Ilakovac Kveder, )
PZS-2019-02-4129
Slovenian Research Agency No. P1-0021 and No. N1-0079
UIP-2014-09-4744

Ustanove
Institut za fiziku, Zagreb,
Institut "Ruđer Bošković", Zagreb

Citiraj ovu publikaciju

Muratović, Senada; Karadeniz, Bahar; Stolar, Tomislav; Lukin, Stipe; Halasz, Ivan; Herak, Mirta; Mali, Gregor; Krupskaya, Yulia; Kataev, Vladislav; Žilić, Dijana; Užarević, Krunoslav
Impact of dehydration and mechanical amorphization on the magnetic properties of Ni(ii)-MOF-74 // Journal of Materials Chemistry C, 8 (2020), 7132-7142 doi:10.1039/D0TC00844C (međunarodna recenzija, članak, znanstveni)
Muratović, S., Karadeniz, B., Stolar, T., Lukin, S., Halasz, I., Herak, M., Mali, G., Krupskaya, Y., Kataev, V., Žilić, D. & Užarević, K. (2020) Impact of dehydration and mechanical amorphization on the magnetic properties of Ni(ii)-MOF-74. Journal of Materials Chemistry C, 8, 7132-7142 doi:10.1039/D0TC00844C.
@article{article, year = {2020}, pages = {7132-7142}, DOI = {10.1039/D0TC00844C}, keywords = {MOF-74, Ni(II), mechanically responsive MOF, magnetic MOF, amorphization, dehydration, magnetism, ESR/EPR, high and low spin Ni(II), spin-crossover}, journal = {Journal of Materials Chemistry C}, doi = {10.1039/D0TC00844C}, volume = {8}, issn = {2050-7526}, title = {Impact of dehydration and mechanical amorphization on the magnetic properties of Ni(ii)-MOF-74}, keyword = {MOF-74, Ni(II), mechanically responsive MOF, magnetic MOF, amorphization, dehydration, magnetism, ESR/EPR, high and low spin Ni(II), spin-crossover} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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