Selective photoswitching of the binuclear spin crossover compound {[Fe(bt)(NCS)2]2(bpm)} into two distinct macroscopic phases -: art. no. 107205

被引：76

作者：

Moussa, NO

Molnár, G

Bonhommeau, S

Zwick, A

Mouri, S

Tanaka, K

Real, JA

Bousseksou, A

机构：

[1] CNRS, Chim Coordinat Lab, UPR 8241, F-31077 Toulouse, France

[2] Univ Toulouse 3, Lab Phys Solides Toulouse, CNRS, UMR 5477, F-31062 Toulouse, France

[3] Kyoto Univ, Dept Phys, Grad Sch Sci, Kyoto 6068502, Japan

[4] Univ Valencia, Dept Quim Inorgan, Inst Ciencia Mol, Valencia 46100, Spain

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.94.107205

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The low-spin (LS-LS, S=0) diamagnetic form of the binuclear spin crossover complex {[Fe(bt)(NCS)(2)](2)(bpm)} was selectively photoconverted into two distinct macroscopic phases at different excitation wavelengths (1342 or 647.1 nm). These long-lived metastable phases have been identified, respectively, as the symmetry-broken paramagnetic form (HS-LS, S=2) and the antiferromagnetically coupled (HS-HS, S=0) high-spin form of the compound. The selectivity may be explained by the strong coupling of the primary excited states to the paramagnetic state.

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页数：4

相关论文

共 16 条

[1] Switching of molecular spin states in inorganic complexes by temperature, pressure, magnetic field and light:: Towards molecular devices [J].

Bousseksou, A ;

Molnár, G ;

Matouzenko, G .

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2004, (22) :4353-4369

[2]

BOUSSEKSOU A, 1992, J PHYS I, V2, P1381, DOI 10.1051/jp1:1992217

[3] Ising-like model for the two step spin-crossover of binuclear molecules [J].

Bousseksou, A. ;

Varret, F. ;

Nasser, J. .

Journal De Physique, I, 1993, 3 (06)

[4] Time-resolved relaxation studies of spin crossover systems in solution [J].

Brady, C ;

McGarvey, JJ ;

McCusker, JK ;

Toftlund, H ;

Hendrickson, DN .

SPIN CROSSOVER IN TRANSITION METAL COMPOUNDS III, 2004, 235 :1-22

[5] Atypical photomagnetic properties in a series of binuclear iron(II) spin crossover complexes [J].

Chastanet, G ;

Carbonera, C ;

Mingotaud, C ;

Létard, JF .

JOURNAL OF MATERIALS CHEMISTRY, 2004, 14 (24) :3516-3523

[6] LIGHT-INDUCED EXCITED SPIN STATE TRAPPING IN A TRANSITION-METAL COMPLEX - THE HEXA-1-PROPYLTETRAZOLE-IRON (II) TETRAFLUOROBORATE SPIN-CROSSOVER SYSTEM [J].

DECURTINS, S ;

GUTLICH, P ;

KOHLER, CP ;

SPIERING, H ;

HAUSER, A .

CHEMICAL PHYSICS LETTERS, 1984, 105 (01) :1-4

[7] THERMAL AND OPTICAL SWITCHING OF IRON(II) COMPLEXES [J].

GUTLICH, P ;

HAUSER, A ;

SPIERING, H .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 1994, 33 (20) :2024-2054

[8] Light-induced spin crossover and the high-spin→low-spin relaxation [J].

Hauser, A .

SPIN CROSSOVER IN TRANSITION METAL COMPOUNDS II, 2004, 234 :155-198

[9] Direct monitoring of spin state in dinuclear iron(II) coordination compounds [J].

Ksenofontov, V ;

Spiering, H ;

Reiman, S ;

Garcia, Y ;

Gaspar, AB ;

Moliner, N ;

Real, JA ;

Gütlich, P .

CHEMICAL PHYSICS LETTERS, 2001, 348 (5-6) :381-386

[10] Light induced excited pair spin state in an iron(II) binuclear spin-crossover compound [J].

Létard, JF ;

Real, JA ;

Moliner, N ;

Gaspar, AB ;

Capes, L ;

Cador, O ;

Kahn, O .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (45) :10630-10631