Transient absorption spectroscopy of the [Fe(2 CH3-phen)3]2+ complex: Study of the high spin ⇆ low spin relaxation of an isolated iron(II) complex

被引：10

作者：

Galle, G. ^{[1
]}

Jonusauskas, G. ^{[1
]}

Tondusson, M. ^{[1
]}

Mauriac, C. ^{[2
]}

Letard, J. F. ^{[2
]}

Freysz, E. ^{[1
]}

机构：

[1] Univ Bordeaux, LOMA, UMR CNRS 5798, F-33405 Talence, France

[2] Univ Bordeaux, CNRS, ICMCB, UPR 9048, F-33608 Pessac, France

来源：

CHEMICAL PHYSICS LETTERS | 2013年 / 556卷

关键词：

ULTRAFAST DYNAMICS; CROSSOVER SYSTEMS; STATE;

D O I：

10.1016/j.cplett.2012.11.034

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report on the light induced spin crossover dynamics of [Fe(2 CH3-phen)(3)](2+) complex in solution. The excitation of the complex by pulses centered at lambda = 500 nm along the metal to ligand charge transfer absorption band indicates a selective excitation of the LS state. The excitation of the complex by pulses centered at lambda = 330 nm or lambda = 335 nm reveals an increase of the LS state population and a photo-bleaching of the HS state population that is associated to a transient photo-dissociation. A method that makes it possible to deduce the kinetics of both the HS -> LS state and LS -> HS state is proposed. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：82 / 88

页数：7

共 29 条

[1] 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

[2] Femtosecond XANES Study of the Light-Induced Spin Crossover Dynamics in an Iron(II) Complex [J].

Bressler, Ch. ;

Milne, C. ;

Pham, V. -T. ;

ElNahhas, A. ;

van der Veen, R. M. ;

Gawelda, W. ;

Johnson, S. ;

Beaud, P. ;

Grolimund, D. ;

Kaiser, M. ;

Borca, C. N. ;

Ingold, G. ;

Abela, R. ;

Chergui, M. .

SCIENCE, 2009, 323 (5913) :489-492

[3] Light-induced spin crossover in Fe(II)-based complexes: The full photocycle unraveled by ultrafast optical and X-ray spectroscopies [J].

Cannizzo, A. ;

Milne, C. J. ;

Consani, C. ;

Gawelda, W. ;

Bressler, Ch. ;

van Mourik, F. ;

Chergui, M. .

COORDINATION CHEMISTRY REVIEWS, 2010, 254 (21-22) :2677-2686

[4] Vibrational Coherences and Relaxation in the High-Spin State of Aqueous [FeII(bpy)3]2+ [J].

Consani, Cristina ;

Premont-Schwarz, Mirabelle ;

ElNahhas, Amal ;

Bressler, Christian ;

van Mourik, Frank ;

Cannizzo, Andrea ;

Chergui, Majed .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2009, 48 (39) :7184-7187

[5] Ultrafast dynamics in the metal-to-ligand charge transfer excited-state evolution of [Ru(4,4′-diphenyl-2,2′-bipyridine)3]2+ [J].

Damrauer, NH ;

McCusker, JK .

JOURNAL OF PHYSICAL CHEMISTRY A, 1999, 103 (42) :8440-8446

[6] Study of the Light-Induced Spin Crossover Process of the [FeII(bpy)3]2+ Complex [J].

de Graaf, Coen ;

Sousa, Carmen .

CHEMISTRY-A EUROPEAN JOURNAL, 2010, 16 (15) :4550-4556

[7] LIGHT-INDUCED EXCITED-SPIN-STATE TRAPPING IN IRON(II) SPIN-CROSSOVER SYSTEMS - OPTICAL SPECTROSCOPIC AND MAGNETIC-SUSCEPTIBILITY STUDY [J].

DECURTINS, S ;

GUTLICH, P ;

HASSELBACH, KM ;

HAUSER, A ;

SPIERING, H .

INORGANIC CHEMISTRY, 1985, 24 (14) :2174-2178

[8] PICOSECOND PHOTODISSOCIATION OF 6-COORDINATE IRON(II) PORPHYRINS [J].

DIXON, DW ;

KIRMAIER, C ;

HOLTEN, D .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1985, 107 (04) :808-813

[9] Structural determination of a short-lived excited iron(II) complex by picosecond x-ray absorption spectroscopy [J].

Gawelda, Wojciech ;

Pham, Van-Thai ;

Benfatto, Maurizio ;

Zaushitsyn, Yuri ;

Kaiser, Maik ;

Grolimund, Daniel ;

Johnson, Steven L. ;

Abela, Rafael ;

Hauser, Andreas ;

Bressler, Christian ;

Chergui, Majed .

PHYSICAL REVIEW LETTERS, 2007, 98 (05)

[10] Ultrafast nonadiabatic dynamics of [FeII(bpy)3]2+ in solution [J].

Gawelda, Wojciech ;

Cannizzo, Andrea ;

Pham, Van-Thai ;

van Mourik, Frank ;

Bressler, Christian ;

Chergui, Majed .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (26) :8199-8206

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