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Issue 16, 2011
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Exploring the thermochromism of sulfite-embedded polyoxometalate capsules

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Abstract

The Dawson-type polyanion [α-Mo18O54(SO3)2]4, with two SO32 templates embedded inside a polyoxomolybdate(VI) cage, exhibits thermochromism over an exceptionally wide temperature range (∼500 K). The temperature dependence of the cluster structure, established from X-ray crystallography, IR and Raman spectroscopy and DFT calculations, is related to a decreasing HOMO–LUMO gap in the near UV with increasing temperature. We postulate this is due to geometrical changes that affect both the occupied and unoccupied frontier molecular orbitals of this cluster anion.

Graphical abstract: Exploring the thermochromism of sulfite-embedded polyoxometalate capsules

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Article information


Submitted
09 Jan 2011
Accepted
17 Feb 2011
First published
15 Mar 2011

Phys. Chem. Chem. Phys., 2011,13, 7295-7297
Article type
Communication

Exploring the thermochromism of sulfite-embedded polyoxometalate capsules

R. Tsunashima, D. Long, T. Endo, S. Noro, T. Akutagawa, T. Nakamura, R. Q. Cabrera, P. F. McMillan, P. Kögerler and L. Cronin, Phys. Chem. Chem. Phys., 2011, 13, 7295
DOI: 10.1039/C1CP20074G

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