Communication

Spin-Crossover Nanocrystals with Magnetic, Optical, and Structural Bistability Near Room Temperature†

  1. Ishtvan Boldog Dr.1,
  2. Ana B. Gaspar Dr.1,
  3. Víctor Martínez1,
  4. Pablo Pardo-Ibañez2,
  5. Vadim Ksenofontov Dr.3,
  6. Ashis Bhattacharjee Dr.3,
  7. Philipp Gütlich Prof.3,
  8. José A. Real Prof.1

Article first published online: 11 JUL 2008

DOI: 10.1002/anie.200801673

Issue

Angewandte Chemie International Edition

Angewandte Chemie International Edition

Volume 47, Issue 34, pages 6433–6437, August 11, 2008

Additional Information

How to Cite

Boldog, I., Gaspar, A., Martínez, V., Pardo-Ibañez, P., Ksenofontov, V., Bhattacharjee, A., Gütlich, P. and Real, J. (2008), Spin-Crossover Nanocrystals with Magnetic, Optical, and Structural Bistability Near Room Temperature. Angewandte Chemie International Edition, 47: 6433–6437. doi: 10.1002/anie.200801673

Author Information

  1. 1

    Institut de Ciència Molecular, Departament de Química Inorgànica, Universitat de València, Edifici d'Instituts de Paterna, Apartat de Correus 22085, 46071 València (Spain), Fax: (+34) 96-3544-855

  2. 2

    Institut de Ciència dels Materials, Universitat de València, Edifici d'Instituts de Paterna, Apartat de Correus 22085, 46071 València (Spain)

  3. 3

    Institut für Anorganische und Analytische Chemie, Johannes-Gutenberg-Universität, Staudinger-Weg 9, 55099 Mainz (Germany)

  1. †

    Financial support from the Spanish Ministerio de Educación y Ciencia (MEC) (CTQ 2007-64727-FEDER), the Generalitat Valenciana (ACOMP07/110), and the European Network of excellence MAGMANET (contract: NMP3-CT-2005-515767-2) is acknowledged. A.B.G. thanks the Spanish MEC for a research contract (Programa Ramón y Cajal).

Publication History

  1. Issue published online: 4 AUG 2008
  2. Article first published online: 11 JUL 2008
  3. Manuscript Received: 9 APR 2008

Funded by

  • Spanish Ministerio de Educación y Ciencia (MEC). Grant Number: CTQ 2007-64727-FEDER
  • Generalitat Valenciana. Grant Number: ACOMP07/110
  • European Network of excellence MAGMANET. Grant Number: NMP3-CT-2005-515767-2

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Keywords:

  • bistability;
  • micelles;
  • nanostructures;
  • spin crossover;
  • thermochromism

Graphical Abstract

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Nanocrystals of the three-dimensional, spin-crossover, porous coordination framework [Fe(pz)Pt(CN)4]⋅n H2O (pz=pyrazine; n≤2.5) have been synthesized from water-in-oil microemulsions. The surfactant-free nanocrystals readily desorb water and the resulting anhydrous compounds exhibit thermally induced electronic bistability accompanied by a pronounced color change (see picture; HS=high spin, LS=low spin) close to room temperature.

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