Thermal and near-infrared light induced spin crossover in a mononuclear iron(II) complex with a tetrathiafulvalene-fused dipyridophenazine ligand

F. Pointillart; X. Liu; M. Kepenekian; B. Le Guennic; S. Golhen; V. Dorcet; T. Roisnel; O. Cador; Z. You; J. Hauser; S. Decurtins; L. Ouahab; S.-X. Liu

doi:10.1039/C6DT00920D

Thermal and near-infrared light induced spin crossover in a mononuclear iron(ii) complex with a tetrathiafulvalene-fused dipyridophenazine ligand†

F. Pointillart,*^a X. Liu,^b M. Kepenekian,^a B. Le Guennic,^a S. Golhen,^a V. Dorcet,^a T. Roisnel,^a O. Cador,^a Z. You,‡^b J. Hauser,^b S. Decurtins,^b L. Ouahab^a and S.-X. Liu*^b

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^a Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS - Université de Rennes 1, Rennes Cedex, France
E-mail: fabrice.pointillart@univ-rennes1.fr
Fax: +33(0)2 23 23 68 40
Tel: +33(0)2 23 23 67 52

^b Departement für Chemie und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
E-mail: liu@dcb.unibe.ch

Abstract

A mononuclear Fe(II) complex involving a tetrathiafulvalene-based ligand exhibits thermal spin-crossover (around 143 K) with pronounced hysteresis behaviour (48 K). The chromophoric and π-extended ligand allows Near-Infrared (NIR) sensitization for the light-induced excited spin-state trapping (LIESST) with T(LIESST) = 90 K.

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Thermal and near-infrared light induced spin crossover in a mononuclear iron(ii) complex with a tetrathiafulvalene-fused dipyridophenazine ligand†

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Thermal and near-infrared light induced spin crossover in a mononuclear iron(II) complex with a tetrathiafulvalene-fused dipyridophenazine ligand

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