One-Shot-Laser-Pulse-Induced Cooperative Charge Transfer Accompanied by Spin Transition in a Co-Fe Prussian Blue Analog at Room Temperature

2002 ◽  
Vol 31 (4) ◽  
pp. 486-487 ◽  
Author(s):  
Naonobu Shimamoto ◽  
Shin-ichi Ohkoshi ◽  
Osamu Sato ◽  
Kazuhito Hashimoto
Keyword(s):  
Charge Transfer ◽  
Laser Pulse ◽  
Prussian Blue ◽  
Room Temperature ◽  
Spin Transition ◽  
Prussian Blue Analog

Cooling rate-dependent charge-transfer-induced spin transition in K0.4Co1.3[Fe(CN)6]·nH2O Prussian blue analog

2007 ◽  
Vol 310 (2) ◽  
pp. 1458-1459 ◽  
Author(s):  
J.-H. Park ◽  
F. Frye ◽  
N.E. Anderson ◽  
D.M. Pajerowski ◽  
Y.D. Huh ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Prussian Blue ◽  
Cooling Rate ◽  
Spin Transition ◽  
Rate Dependent ◽  
Prussian Blue Analog

One Shot Laser Pulse Induced Reversible Spin Transition in the Spin-Crossover Complex [Fe(C4H4N2){Pt(CN)4}] at Room Temperature

2005 ◽  
Vol 117 (26) ◽  
pp. 4137-4141 ◽  
Author(s):  
Sébastien Bonhommeau ◽  
Gábor Molnár ◽  
Ana Galet ◽  
Antoine Zwick ◽  
José-Antonio Real ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Room Temperature ◽  
Spin Crossover ◽  
Spin Transition

Reversible Valence Tautomerism Induced by a Single-Shot Laser Pulse in a Cobalt-Iron Prussian Blue Analog

2003 ◽  
Vol 90 (16) ◽  
Author(s):  
H. W. Liu ◽  
K. Matsuda ◽  
Z. Z. Gu ◽  
K. Takahashi ◽  
A. L. Cui ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Prussian Blue ◽  
Single Shot ◽  
Valence Tautomerism ◽  
Prussian Blue Analog ◽  
Cobalt Iron

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

Control of Charge-Transfer-Induced Spin Transition Temperature on Cobalt−Iron Prussian Blue Analogues

2002 ◽  
Vol 41 (4) ◽  
pp. 678-684 ◽  
Author(s):  
Naonobu Shimamoto ◽  
Shin-ichi Ohkoshi ◽  
Osamu Sato ◽  
Kazuhito Hashimoto
Keyword(s):  
Charge Transfer ◽  
Transition Temperature ◽  
Prussian Blue ◽  
Spin Transition ◽  
Prussian Blue Analogues ◽  
Cobalt Iron

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.

Titelbild: One Shot Laser Pulse Induced Reversible Spin Transition in the Spin-Crossover Complex [Fe(C4H4N2){Pt(CN)4}] at Room Temperature (Angew. Chem. 26/2005)

2005 ◽  
Vol 117 (26) ◽  
pp. 4011-4011 ◽  
Author(s):  
Sébastien Bonhommeau ◽  
Gábor Molnár ◽  
Ana Galet ◽  
Antoine Zwick ◽  
José-Antonio Real ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Room Temperature ◽  
Spin Crossover ◽  
Spin Transition

One Shot Laser Pulse Induced Reversible Spin Transition in the Spin-Crossover Complex [Fe(C4H4N2){Pt(CN)4}] at Room Temperature

2005 ◽  
Vol 44 (26) ◽  
pp. 4069-4073 ◽  
Author(s):  
Sébastien Bonhommeau ◽  
Gábor Molnár ◽  
Ana Galet ◽  
Antoine Zwick ◽  
José-Antonio Real ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Room Temperature ◽  
Spin Crossover ◽  
Spin Transition
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