Monitoring of Fe(II) Spin Transition in Cu(II)-Doped Spin-Crossover Nanoparticles
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F25%3A73630587" target="_blank" >RIV/61989592:15640/25:73630587 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/1420-3049/30/6/1258" target="_blank" >https://www.mdpi.com/1420-3049/30/6/1258</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/molecules30061258" target="_blank" >10.3390/molecules30061258</a>
Alternative languages
Result language
angličtina
Original language name
Monitoring of Fe(II) Spin Transition in Cu(II)-Doped Spin-Crossover Nanoparticles
Original language description
Experimental protocols based on Electron Paramagnetic Resonance (EPR) and Raman spectroscopy are presented for the investigation of the Fe(II) spin transition in Cu(II)-doped 1-D spin-crossover (SCO) nanoparticles of the type [Fe1-xCux(NH2trz)3]Br2 where x = 0.03 and 0.06 and NH2trz = 4-amino-1, 2, 4-triazole. The resulting nanoparticles were characterized using Transmission Electron Microscopy (TEM), Infrared (IR) spectroscopy, and powder X-ray diffraction (p-XRD). Magnetic susceptibility measurements revealed a dependence on the scan rate, with critical temperatures and hysteresis widths varying accordingly. EPR spectroscopy provided insights into the doped nanoparticles' structural changes and spin-state transitions. The Cu(II) dopants exhibited significant g-factor anisotropy and hyperfine structure, indicative of a distorted octahedral coordination. The EPR spectra indicated that the spin transition occurs in domains populated by ions of the same spin state. Cu(II) ions show different spectral characteristics depending on whether they are in high-spin or low-spin domains of Fe(II). Changes in Raman bands induced by laser power reveal structural and electronic rearrangements during the LS to HS transition. The findings provide insights into metal-ligand interactions and the molecular mechanisms underlying the SCO process.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
MOLECULES
ISSN
1420-3049
e-ISSN
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Volume of the periodical
30
Issue of the periodical within the volume
6
Country of publishing house
CH - SWITZERLAND
Number of pages
16
Pages from-to
nestránkováno
UT code for WoS article
001452841500001
EID of the result in the Scopus database
2-s2.0-105001147517