High-temperature Electron transfer Coupled Spin Transition (ETCST) with Hysteresis in a Discrete [Fe2Co2] Prussian Blue Analogue

2021 ◽  
Author(s):  
Jyoti Yadav ◽  
Dibya Jyoti Mondal ◽  
Sanjit Konar
Keyword(s):  
Electron Transfer ◽  
High Temperature ◽  
Prussian Blue ◽  
General Formula ◽  
Spin Transition ◽  
Prussian Blue Analogue ◽  
Temperature Electron

A thermoresponsive Fe-Co based discrete Prussian Blue Analogue (PBA) with general formula [Fe(Tp)(CN)3]2[Co{en(Bn)py}]2(ClO4)2 •4MeOH•4H2O i.e. [1•4MeOH•4H2O] is reported, which discloses a sharp and high temperature ETCST along with the wide...

Room-Temperature Photoinduced Electron Transfer in a Prussian Blue Analogue under Hydrostatic Pressure

2012 ◽  
Vol 124 (36) ◽  
pp. 9280-9282 ◽  
Author(s):  
Jean-Daniel Cafun ◽  
Julien Lejeune ◽  
François Baudelet ◽  
Paul Dumas ◽  
Jean-Paul Itié ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Hydrostatic Pressure ◽  
Prussian Blue ◽  
Photoinduced Electron Transfer ◽  
Room Temperature ◽  
Prussian Blue Analogue

Influence of particle size on the phase behavior associated with the thermal spin transition of the Prussian blue analogue K0.4Co1.3[Fe(CN)6]·4.4H2O

Polyhedron ◽  
2013 ◽  
Vol 64 ◽  
pp. 289-293 ◽  
Author(s):  
Matthew J. Andrus ◽  
Yitzi M. Calm ◽  
Elisabeth S. Knowles ◽  
Matthieu F. Dumont ◽  
Khalil A. Abboud ◽  
...  
Keyword(s):  
Particle Size ◽  
Phase Behavior ◽  
Prussian Blue ◽  
Spin Transition ◽  
Prussian Blue Analogue

Switching magnetic interactions in the NiFe Prussian Blue Analogue: an ab initio inspection

2014 ◽  
Vol 16 (20) ◽  
pp. 9509-9514 ◽  
Author(s):  
Tim Krah ◽  
Nadia Ben Amor ◽  
Vincent Robert
Keyword(s):  
Electron Transfer ◽  
Wave Function ◽  
Ab Initio ◽  
Prussian Blue ◽  
Transfer Process ◽  
P Wave ◽  
Magnetic Interactions ◽  
Electron Transfer Process ◽  
Prussian Blue Analogue ◽  
Cluster Calculations

Wave function embedded cluster calculations are performed to stress a cation-coupled electron transfer process in the NiFe Prussian Blue Analogue.

scholarly journals Charge transfer driven by ultrafast spin transition in a CoFe Prussian blue analogue

2020 ◽  
Vol 13 (1) ◽  
pp. 10-14
Author(s):  
Marco Cammarata ◽  
Serhane Zerdane ◽  
Lodovico Balducci ◽  
Giovanni Azzolina ◽  
Sandra Mazerat ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Prussian Blue ◽  
Spin Transition ◽  
Prussian Blue Analogue

scholarly journals Time-Resolved Spectroscopy of Photo-Induced Electron Transfer in Dinuclear and Tetranuclear Fe/Co Prussian Blue Analogues

2020 ◽  
Author(s):  
Jennifer Zimara ◽  
Hendrik Stevens ◽  
Rainer Oswald ◽  
Serhiy Demeshko ◽  
Sebastian Dechert ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Prussian Blue ◽  
Variable Temperature ◽  
Spin Transition ◽  
Acetonitrile Solution ◽  
Time Resolved ◽  
Thermally Induced ◽  
Prussian Blue Analogues ◽  
Charge Transfer Dynamics

The dynamics of photo-driven charge transfer-induced spin transition (CTIST) in two Fe/Co Prussian Blue Analogues (PBAs) is revealed by femtosecond IR and UV/vis pump-probe spectroscopy. Depending on temperature the known tetranuclear square-type complex [Co<sub>2</sub>Fe<sub>2</sub>(CN)<sub>6</sub>(tp*)<sub>2</sub>(4,4’-dtbbpy)<sub>4</sub>](PF<sub>6</sub>)<sub>2</sub> (<b>1</b>) exists in two electronic states. In acetonitrile solution at <240 K the low temperature (<b>LT</b>) phase is prevalent consisting of low-spin Fe(II) and low-spin Co(III), [Fe<sup>II</sup><sub>LS</sub>Co<sup>III</sup><sub>LS</sub>]<sub>2</sub>. Temperature rise causes thermally induced CTIST towards the high temperature (<b>HT</b>) phase consisting of low-spin Fe(III) and high-spin Co(II), [Fe<sup>III</sup><sub>LS</sub>Co<sup>II</sup><sub>HS</sub>]<sub>2</sub>, being prevalent at >300 K. Photo-excitation into the intervalence charge transfer (IVCT) band of the <b>LT</b> phase at 800 nm induces electron transfer in one Fe-Co edge of PBA <b>1</b> and produces a [Fe<sup>III</sup><sub>LS</sub>Co<sup>II</sup><sub>LS</sub>] intermediate which by spin crossover (SCO) is stabilized within 400 fs to a long-lived (>1 ns) [Fe<sup>III</sup><sub>LS</sub>Co<sup>II</sup><sub>HS</sub>]. In contrast, IVCT excitation of the <b>HT</b> phase at 400 nm generates a [Fe<sup>II</sup><sub>LS</sub>Co<sup>III</sup><sub>HS</sub>] species with a lifetime of 3.6 ps. Subsequent back-electron transfer populates the vibrationally hot ground state, which thermalizes within 8 ps. The newly synthesized dinuclear PBA, [CoFe(CN)<sub>3</sub>(tp*)(pz*<sub>4</sub>Lut)]ClO<sub>4</sub> (<b>2</b>), provides a benchmark of the <b>HT</b> phase of <b>1</b>, i.e. [Fe<sup>III</sup><sub>LS</sub>Co<sup>II</sup><sub>HS</sub>], as verified by variable temperature magnetic susceptibility measurements and <sup>57</sup>Fe Mößbauer spectroscopy. The photo-induced charge transfer dynamics of PBA <b>2</b> indeed is almost identical to that of the <b>HT</b> phase of phase of PBA <b>1</b> with a lifetime of the excited [Fe<sup>II</sup><sub>LS</sub>Co<sup>III</sup><sub>HS</sub>] species of 3.8 ps.

Metal-to-metal electron transfer and magnetic interactions in a mixed-valence Prussian Blue analogue

2006 ◽  
Vol 302 (1) ◽  
pp. 173-180 ◽  
Author(s):  
A. Bhattacharjee ◽  
S. Saha ◽  
S. Koner ◽  
V. Ksenofontov ◽  
S. Reiman ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Prussian Blue ◽  
Mixed Valence ◽  
Magnetic Interactions ◽  
Prussian Blue Analogue ◽  
Metal Electron

scholarly journals Time-Resolved Spectroscopy of Photo-Induced Electron Transfer in Dinuclear and Tetranuclear Fe/Co Prussian Blue Analogues

2020 ◽  
Author(s):  
Jennifer Zimara ◽  
Hendrik Stevens ◽  
Rainer Oswald ◽  
Serhiy Demeshko ◽  
Sebastian Dechert ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Prussian Blue ◽  
Variable Temperature ◽  
Spin Transition ◽  
Acetonitrile Solution ◽  
Time Resolved ◽  
Thermally Induced ◽  
Prussian Blue Analogues ◽  
Charge Transfer Dynamics

The dynamics of photo-driven charge transfer-induced spin transition (CTIST) in two Fe/Co Prussian Blue Analogues (PBAs) is revealed by femtosecond IR and UV/vis pump-probe spectroscopy. Depending on temperature the known tetranuclear square-type complex [Co<sub>2</sub>Fe<sub>2</sub>(CN)<sub>6</sub>(tp*)<sub>2</sub>(4,4’-dtbbpy)<sub>4</sub>](PF<sub>6</sub>)<sub>2</sub> (<b>1</b>) exists in two electronic states. In acetonitrile solution at <240 K the low temperature (<b>LT</b>) phase is prevalent consisting of low-spin Fe(II) and low-spin Co(III), [Fe<sup>II</sup><sub>LS</sub>Co<sup>III</sup><sub>LS</sub>]<sub>2</sub>. Temperature rise causes thermally induced CTIST towards the high temperature (<b>HT</b>) phase consisting of low-spin Fe(III) and high-spin Co(II), [Fe<sup>III</sup><sub>LS</sub>Co<sup>II</sup><sub>HS</sub>]<sub>2</sub>, being prevalent at >300 K. Photo-excitation into the intervalence charge transfer (IVCT) band of the <b>LT</b> phase at 800 nm induces electron transfer in one Fe-Co edge of PBA <b>1</b> and produces a [Fe<sup>III</sup><sub>LS</sub>Co<sup>II</sup><sub>LS</sub>] intermediate which by spin crossover (SCO) is stabilized within 400 fs to a long-lived (>1 ns) [Fe<sup>III</sup><sub>LS</sub>Co<sup>II</sup><sub>HS</sub>]. In contrast, IVCT excitation of the <b>HT</b> phase at 400 nm generates a [Fe<sup>II</sup><sub>LS</sub>Co<sup>III</sup><sub>HS</sub>] species with a lifetime of 3.6 ps. Subsequent back-electron transfer populates the vibrationally hot ground state, which thermalizes within 8 ps. The newly synthesized dinuclear PBA, [CoFe(CN)<sub>3</sub>(tp*)(pz*<sub>4</sub>Lut)]ClO<sub>4</sub> (<b>2</b>), provides a benchmark of the <b>HT</b> phase of <b>1</b>, i.e. [Fe<sup>III</sup><sub>LS</sub>Co<sup>II</sup><sub>HS</sub>], as verified by variable temperature magnetic susceptibility measurements and <sup>57</sup>Fe Mößbauer spectroscopy. The photo-induced charge transfer dynamics of PBA <b>2</b> indeed is almost identical to that of the <b>HT</b> phase of phase of PBA <b>1</b> with a lifetime of the excited [Fe<sup>II</sup><sub>LS</sub>Co<sup>III</sup><sub>HS</sub>] species of 3.8 ps.

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