Resonance Raman study of spin-crossover [Fe(Htrz)2(trz)](BF 4)·H2O particles coated with gold

Yeny A. Tobon; Céline Etrillard; Olivier Nguyen; Jean François Létard; Vina Faramarzi; Jean François Dayen; Bernard Doudin; Dario M. Bassani; François Guillaume

doi:10.1002/ejic.201200562

Resonance Raman study of spin-crossover [Fe(Htrz)₂(trz)](BF ₄)·H₂O particles coated with gold

Yeny A. Tobon, Céline Etrillard, Olivier Nguyen, Jean François Létard, Vina Faramarzi, Jean François Dayen, Bernard Doudin, Dario M. Bassani, François Guillaume

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17 Scopus citations

Abstract

Spin-crossover (SCO) particles of the [Fe(Htrz)₂(trz)](BF ₄)·H₂O polymeric complex were deposited on a glass slide and coated with gold. We found that normal Raman scattering is not appropriate for analysing such a material. However, the spin transition and the thermal hysteresis of the coated particles were successfully monitored by means of Raman spectroscopy using the 325 nm excitation line that is in pre-resonance with the Metal to Ligand Charge Transfer (MLCT) electronic absorption band of the low-spin state. The results obtained confirm the persistence of the spin-crossover properties of the gold coated particles. The strong enhancement of the Raman scattering using the 325 nm excitation opens interesting opportunities for monitoring the SCO of particles integrated in miniaturised devices. The spin transition and thermal hysteresis of gold-coated particles of the spin-crossover [Fe(Htrz)₂(trz)] (BF₄)·H ₂O polymeric complex were successfully monitored by means of resonance Raman spectroscopy using the 325 nm excitation line that is in pre-resonance with the MLCT electronic absorption band of the low-spin state of the complex.

Original language	English (US)
Pages (from-to)	5837-5842
Number of pages	6
Journal	European Journal of Inorganic Chemistry
Issue number	35
DOIs	https://doi.org/10.1002/ejic.201200562
State	Published - Dec 2012
Externally published	Yes

Keywords

Coordination polymers
Gold
Magnetic properties
Raman spectroscopy
Spin crossover

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title = "Resonance Raman study of spin-crossover [Fe(Htrz)2(trz)](BF 4)·H2O particles coated with gold",

abstract = "Spin-crossover (SCO) particles of the [Fe(Htrz)2(trz)](BF 4)·H2O polymeric complex were deposited on a glass slide and coated with gold. We found that normal Raman scattering is not appropriate for analysing such a material. However, the spin transition and the thermal hysteresis of the coated particles were successfully monitored by means of Raman spectroscopy using the 325 nm excitation line that is in pre-resonance with the Metal to Ligand Charge Transfer (MLCT) electronic absorption band of the low-spin state. The results obtained confirm the persistence of the spin-crossover properties of the gold coated particles. The strong enhancement of the Raman scattering using the 325 nm excitation opens interesting opportunities for monitoring the SCO of particles integrated in miniaturised devices. The spin transition and thermal hysteresis of gold-coated particles of the spin-crossover [Fe(Htrz)2(trz)] (BF4)·H 2O polymeric complex were successfully monitored by means of resonance Raman spectroscopy using the 325 nm excitation line that is in pre-resonance with the MLCT electronic absorption band of the low-spin state of the complex.",

keywords = "Coordination polymers, Gold, Magnetic properties, Raman spectroscopy, Spin crossover",

author = "Tobon, {Yeny A.} and C{\'e}line Etrillard and Olivier Nguyen and L{\'e}tard, {Jean Fran{\c c}ois} and Vina Faramarzi and Dayen, {Jean Fran{\c c}ois} and Bernard Doudin and Bassani, {Dario M.} and Fran{\c c}ois Guillaume",

year = "2012",

month = dec,

doi = "10.1002/ejic.201200562",

language = "English (US)",

pages = "5837--5842",

journal = "European Journal of Inorganic Chemistry",

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T1 - Resonance Raman study of spin-crossover [Fe(Htrz)2(trz)](BF 4)·H2O particles coated with gold

AU - Tobon, Yeny A.

AU - Etrillard, Céline

AU - Nguyen, Olivier

AU - Létard, Jean François

AU - Faramarzi, Vina

AU - Dayen, Jean François

AU - Doudin, Bernard

AU - Bassani, Dario M.

AU - Guillaume, François

PY - 2012/12

Y1 - 2012/12

N2 - Spin-crossover (SCO) particles of the [Fe(Htrz)2(trz)](BF 4)·H2O polymeric complex were deposited on a glass slide and coated with gold. We found that normal Raman scattering is not appropriate for analysing such a material. However, the spin transition and the thermal hysteresis of the coated particles were successfully monitored by means of Raman spectroscopy using the 325 nm excitation line that is in pre-resonance with the Metal to Ligand Charge Transfer (MLCT) electronic absorption band of the low-spin state. The results obtained confirm the persistence of the spin-crossover properties of the gold coated particles. The strong enhancement of the Raman scattering using the 325 nm excitation opens interesting opportunities for monitoring the SCO of particles integrated in miniaturised devices. The spin transition and thermal hysteresis of gold-coated particles of the spin-crossover [Fe(Htrz)2(trz)] (BF4)·H 2O polymeric complex were successfully monitored by means of resonance Raman spectroscopy using the 325 nm excitation line that is in pre-resonance with the MLCT electronic absorption band of the low-spin state of the complex.

AB - Spin-crossover (SCO) particles of the [Fe(Htrz)2(trz)](BF 4)·H2O polymeric complex were deposited on a glass slide and coated with gold. We found that normal Raman scattering is not appropriate for analysing such a material. However, the spin transition and the thermal hysteresis of the coated particles were successfully monitored by means of Raman spectroscopy using the 325 nm excitation line that is in pre-resonance with the Metal to Ligand Charge Transfer (MLCT) electronic absorption band of the low-spin state. The results obtained confirm the persistence of the spin-crossover properties of the gold coated particles. The strong enhancement of the Raman scattering using the 325 nm excitation opens interesting opportunities for monitoring the SCO of particles integrated in miniaturised devices. The spin transition and thermal hysteresis of gold-coated particles of the spin-crossover [Fe(Htrz)2(trz)] (BF4)·H 2O polymeric complex were successfully monitored by means of resonance Raman spectroscopy using the 325 nm excitation line that is in pre-resonance with the MLCT electronic absorption band of the low-spin state of the complex.

KW - Coordination polymers

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KW - Magnetic properties

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KW - Spin crossover

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