Fine-tuning of a thermosalient phase transition by solid solutions

Elisa Nauha, Pance Naumov, Matteo Lusi

Research output: Contribution to journalArticle

Abstract

Thermosalient crystals are solids that exhibit motion at the macroscale as a consequence of a thermally induced phase transition. They represent an interesting scientific phenomenon and could be useful as actuators for the conversion of thermal energy into motion or mechanical work. The potential utilization of these miniature transducers in real-world devices requires a controllable phase transition (i.e. a predetermined temperature). While it is difficult to control these performances with a single-component molecular crystal, "tunable" properties could be accomplished by solid solutions. To verify this hypothesis, the thermosalient material [Zn(bpy)Br2] (bpy = 2,2′-bipyridine) was selected and its synthesis was performed in the presence of chloride ions. The resulting mixed crystals ([Zn(bpy)Br2xCl2(1-x)]) show that the product undergoes the expected thermosalient phase transition, and the temperature of the onset of the phase transition and the transition enthalpy depend on the Cl/Br ratio.

Original languageEnglish (US)
Pages (from-to)4699-4703
Number of pages5
JournalCrystEngComm
Volume18
Issue number25
DOIs
StatePublished - Jan 1 2016

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Solid solutions
solid solutions
Tuning
Phase transitions
tuning
Molecular crystals
Crystals
Thermal energy
mixed crystals
Chlorides
Enthalpy
Transducers
Actuators
thermal energy
crystals
Ions
transducers
Temperature
actuators
enthalpy

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Fine-tuning of a thermosalient phase transition by solid solutions. / Nauha, Elisa; Naumov, Pance; Lusi, Matteo.

In: CrystEngComm, Vol. 18, No. 25, 01.01.2016, p. 4699-4703.

Research output: Contribution to journalArticle

Nauha, Elisa ; Naumov, Pance ; Lusi, Matteo. / Fine-tuning of a thermosalient phase transition by solid solutions. In: CrystEngComm. 2016 ; Vol. 18, No. 25. pp. 4699-4703.
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