Storing spin-crossover and LC phase transitions information by hybridizing spin-crossover complexes with a thermotropic polymer matrix - A novel case of multiple switching

Seong Hoon Jeong, Kyu Nam Kim, Jun Sung Kang, Chang Seop Hong, Dong Hoon Choi, Jung Il Jin, Il Woo Park, Min Gyu Kim

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3 Citations (Scopus)

Abstract

We have prepared two new spin-crossover (SCO) Fe(II) complexes, [Fe(II)(ODT)3](p-tol)2(I) and [Fe(II)(HET)3](p-tol)2(II). And they were blended with a liquid crystalline (LC) poly(oxetane) (POx). Thermal and spin crossover behavior of the composites then were studied by using a superconducting quantum interference device (SQUID), differential scanning calorimetry (DSC) and extended X-ray absorption fine structure (EXAFS) spectroscopy. When composites carried higher than 20wt.% of the Fe(II) complexes, they revealed a reversible spin crossover for the low spin (LS)high spin (HS) transition in addition to the thermal transitions, i.e., glass transition and isotropization, of the LC polymer matrix.

Original languageEnglish
Pages (from-to)3-10
Number of pages8
JournalMolecular Crystals and Liquid Crystals
Volume471
Issue number1
DOIs
Publication statusPublished - 2007 Jan 1

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Keywords

  • Fe(II) complex
  • Hybrid
  • LC polymer
  • Multiple switching
  • SCO (spin crossover)

ASJC Scopus subject areas

  • Condensed Matter Physics

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