High-temperature photo-induced switching and pressure-induced transition in a cooperative molecular spin-crossover material

Gavin A. Craig; Jose Sánchez Costa; Olivier Roubeau; Simon J. Teat; Helena J. Shepherd; Manuel Lopes; Gábor Molnár; Azzedine Bousseksou; Guillem Aromí

doi:10.1039/C3DT52075G

High-temperature photo-induced switching and pressure-induced transition in a cooperative molecular spin-crossover material

Gavin A. Craig, Jose Sánchez Costa, Olivier Roubeau, Simon J. Teat, Helena J. Shepherd, Manuel Lopes, Gábor Molnár, Azzedine Bousseksou, Guillem Aromí

Pure And Applied Chemistry

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

The thermal and photo-induced switching properties of the recently published molecular spin crossover complex [Fe(H4L)2](ClO4)2·H2O·2(CH3)2CO (1) have been investigated in detail through Raman spectroscopy. Magnetometric and single crystal X-ray diffraction kinetic studies within the hysteresis loop have proven its metastable character, which allowed establishing the shape of the true, quasi-static hysteresis loop. This is related to the proximity of the temperatures of the thermal high to low spin SCO (T1/2↓) to those of the relaxation of the thermally or photo-generated metastable states (T(TIESST) and T(LIESST), respectively). Green light irradiation within the hysteresis loop results in a complete low to high spin photo-switch. In addition, the SCO of 1 at room temperature can be induced by applying pressure, as followed by Raman spectroscopy.

Original language	English
Pages (from-to)	729-737
Number of pages	9
Journal	Dalton Transactions
Volume	43
Issue number	2
DOIs	https://doi.org/10.1039/C3DT52075G
Publication status	Published - 3 Oct 2013

Keywords

photo-induced switching
pressure-induced transition
molecular spin crossover complex

Access to Document

10.1039/C3DT52075G

Cite this

@article{f2c84efea0444a34a8f0be5f6d7ca02a,

title = "High-temperature photo-induced switching and pressure-induced transition in a cooperative molecular spin-crossover material",

abstract = "The thermal and photo-induced switching properties of the recently published molecular spin crossover complex [Fe(H4L)2](ClO4)2·H2O·2(CH3)2CO (1) have been investigated in detail through Raman spectroscopy. Magnetometric and single crystal X-ray diffraction kinetic studies within the hysteresis loop have proven its metastable character, which allowed establishing the shape of the true, quasi-static hysteresis loop. This is related to the proximity of the temperatures of the thermal high to low spin SCO (T1/2↓) to those of the relaxation of the thermally or photo-generated metastable states (T(TIESST) and T(LIESST), respectively). Green light irradiation within the hysteresis loop results in a complete low to high spin photo-switch. In addition, the SCO of 1 at room temperature can be induced by applying pressure, as followed by Raman spectroscopy.",

keywords = "photo-induced switching, pressure-induced transition, molecular spin crossover complex",

author = "Craig, {Gavin A.} and Costa, {Jose S{\'a}nchez} and Olivier Roubeau and Teat, {Simon J.} and Shepherd, {Helena J.} and Manuel Lopes and G{\'a}bor Moln{\'a}r and Azzedine Bousseksou and Guillem Arom{\'i}",

year = "2013",

month = oct,

day = "3",

doi = "10.1039/C3DT52075G",

language = "English",

volume = "43",

pages = "729--737",

journal = "Dalton Transactions",

issn = "1477-9226",

publisher = "Royal Society of Chemistry",

number = "2",

}

TY - JOUR

T1 - High-temperature photo-induced switching and pressure-induced transition in a cooperative molecular spin-crossover material

AU - Craig, Gavin A.

AU - Costa, Jose Sánchez

AU - Roubeau, Olivier

AU - Teat, Simon J.

AU - Shepherd, Helena J.

AU - Lopes, Manuel

AU - Molnár, Gábor

AU - Bousseksou, Azzedine

AU - Aromí, Guillem

PY - 2013/10/3

Y1 - 2013/10/3

N2 - The thermal and photo-induced switching properties of the recently published molecular spin crossover complex [Fe(H4L)2](ClO4)2·H2O·2(CH3)2CO (1) have been investigated in detail through Raman spectroscopy. Magnetometric and single crystal X-ray diffraction kinetic studies within the hysteresis loop have proven its metastable character, which allowed establishing the shape of the true, quasi-static hysteresis loop. This is related to the proximity of the temperatures of the thermal high to low spin SCO (T1/2↓) to those of the relaxation of the thermally or photo-generated metastable states (T(TIESST) and T(LIESST), respectively). Green light irradiation within the hysteresis loop results in a complete low to high spin photo-switch. In addition, the SCO of 1 at room temperature can be induced by applying pressure, as followed by Raman spectroscopy.

AB - The thermal and photo-induced switching properties of the recently published molecular spin crossover complex [Fe(H4L)2](ClO4)2·H2O·2(CH3)2CO (1) have been investigated in detail through Raman spectroscopy. Magnetometric and single crystal X-ray diffraction kinetic studies within the hysteresis loop have proven its metastable character, which allowed establishing the shape of the true, quasi-static hysteresis loop. This is related to the proximity of the temperatures of the thermal high to low spin SCO (T1/2↓) to those of the relaxation of the thermally or photo-generated metastable states (T(TIESST) and T(LIESST), respectively). Green light irradiation within the hysteresis loop results in a complete low to high spin photo-switch. In addition, the SCO of 1 at room temperature can be induced by applying pressure, as followed by Raman spectroscopy.

KW - photo-induced switching

KW - pressure-induced transition

KW - molecular spin crossover complex

U2 - 10.1039/C3DT52075G

DO - 10.1039/C3DT52075G

M3 - Article

VL - 43

SP - 729

EP - 737

JO - Dalton Transactions

JF - Dalton Transactions

SN - 1477-9226

IS - 2

ER -

High-temperature photo-induced switching and pressure-induced transition in a cooperative molecular spin-crossover material

Abstract

Keywords

Access to Document

Fingerprint

Cite this