Light-induced spin-state switching in the mixed crystal series of the 2D coordination network {[Zn1-xFex(bbtr)3](BF4)2}∞: optical spectroscopy and cooperative effects.

Chakraborty P; Enachescu C; Humair A; Egger L; Delgado T; Tissot A; Guénée L; Besnard C; Bronisz R; Hauser A

doi:10.1039/c4dt01728e

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Light-induced spin-state switching in the mixed crystal series of the 2D coordination network {[Zn1-xFex(bbtr)3](BF4)2}∞: optical spectroscopy and cooperative effects.

Chakraborty P Département de Chimie Physique, Université de Genève, 30 Quai Ernest-Ansermet, 1211 Genève, Switzerland. andreas.hauser@unige.ch.
Enachescu C
Humair A
Egger L
Delgado T
Tissot A
Guénée L
Besnard C
Bronisz R
Hauser A

2014-08-06

Published in:

Dalton transactions (Cambridge, England : 2003). - 2014

English Depending on the iron(ii) concentration, the mixed crystals of {[Zn1-xFex(bbtr)3](BF4)2}∞, bbtr = 1,4-di(1,2,3-triazol-1-yl)butane, 0.01 ≤ x ≤ 1, show macroscopic light-induced bistability between the high-spin and the low-spin state. In the highly diluted system with x = 0.01 and up to x = 0.31, the photoinduced low-spin state always relaxes back to the high-spin state independent of the initial light-induced low-spin fraction. In the highly concentrated mixed crystals with x = 0.67, 0.87 and 1, the strong cooperative effects coupled to a crystallographic phase transition result in light-induced bistability with decreasing critical light-induced low-spin fraction and increasing hysteresis width for increasing iron(ii) concentrations. The lower limit for the light-induced bistability was estimated to be x ≈ 0.5.

Language

English

Open access status

closed

Identifiers

DOI 10.1039/c4dt01728e
PMID 25091278

Persistent URL

https://sonar.ch/global/documents/50905

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