Room temperature control of spin states in a thin film of a photochromic iron(ii) complex†,Materials Horizons

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Room temperature control of spin states in a thin film of a photochromic iron(ii) complex†
Materials Horizons ( IF 12.2 ) Pub Date : 2018-03-12 00:00:00 , DOI: 10.1039/c7mh01042g
Lorenzo Poggini _{1,

2,

3,

4,

5} , Magdalena Milek _{6,

7,

8,

9} , Giacomo Londi _{1,

2,

3} , Ahmad Naim _{4,

5,

10,

11,

12} , Giordano Poneti _{1,

2,

3} , Lorenzo Squillantini _{4,

5,

10,

11,

12} , Agnese Magnani _{13,

14,

15,

16,

17} , Federico Totti _{1,

2,

3} , Patrick Rosa _{4,

5,

10,

11,

12} , Marat M. Khusniyarov _{6,

7,

8,

9} , Matteo Mannini _{1,

2,

3}

Affiliation

Department of Chemistry “Ugo Schiff” and INSTM Research Unit of Firenze
University of Firenze
Italy
CNRS
Univ. Bordeaux
Department of Chemistry and Pharmacy
Friedrich-Alexander University Erlangen-Nürnberg (FAU)
Erlangen
Germany
ICMCB
UMR5026
F-33600 Pessac
University of Siena
Department of Biotechnologies
Chemistry and Pharmacy
INSTM Research Unit of Siena
53100 Siena

Thin films of a molecular spin crossover iron(II) complex featuring a photochromic diarylethene-based ligand have been grown by sublimation in ultra-high vacuum on an Au(111) single crystal, and investigated by X-ray and UV photoelectron spectroscopies. Temperature-dependent studies demonstrate that the thermally induced spin crossover behaviour is preserved in thin films. The photochromic ligand deliberately integrated into the complex allows photoswitching of the spin states of this iron(II) complex at room temperature, and this photomagnetic effect is still observed in 5 nm thick sublimated films. Thus, this work opens new horizons and pushes bistable spin crossover systems closer to prospective applications in molecular electronics and molecular spintronics devices functioning at room temperature.

中文翻译：

室温控制光致变色铁（ii）配合物薄膜中的自旋态†

通过在Au（111）单晶上超高真空升华，生长具有光致变色二芳基乙烯基配体的分子自旋交联铁（II）配合物薄膜，并通过X射线和UV光电子能谱研究。温度相关的研究表明，热诱导的自旋交叉行为在薄膜中得以保留。故意将光致变色配体整合到配合物中，可以对该铁的自旋态进行光开关（II）在室温下是复杂的，这种光磁效应仍在5 nm厚的升华膜中观察到。因此，这项工作开辟了新的视野，并推动了双稳态自旋交叉系统更接近于在室温下起作用的分子电子学和分子自旋电子学设备的预期应用。

更新日期：2018-03-12

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