Vapochromic and mechanochromic films from square-planar platinum complexes in polymethacrylates

Justin R. Kumpfer, Stephen D. Taylor, William B. Connick, Stuart J. Rowan

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Square-planar platinum(ii) complexes of the 4-dodecyloxy-2,6-bis(N- methylbenzimidazol-2′-yl)pyridine ligand have been blended into a series of methacrylate polymers. Each of the polymer films displayed vapochromic (yellow to red) and vapoluminescent behaviour as a result of the vapour induced change in the Pt-Pt interactions. The solid-state absorption and emission properties of the films were characterized, and the influence of the polymer matrix on the vapochromic response was investigated. Notably, the rate of recovery of the yellow colour after vapour-exposure was found to be dependent on the T g of the matrices, and the response can be effectively erased and the materials restored to the original yellow colour within minutes by simply heating above their T g. The polymer-complex blends also displayed interesting mechanochromic and mechanoluminescent properties upon deformation either by compression, scratching, or stretching. The accumulated data are consistent with a solvato- or mechano-induced structural rearrangement that results in a shortening of the Pt-Pt distances.

Original languageEnglish
Pages (from-to)14196-14204
Number of pages9
JournalJournal of Materials Chemistry
Volume22
Issue number28
DOIs
Publication statusPublished - 2012 Jul 28
Externally publishedYes

Fingerprint

Platinum
Polymers
Vapors
Color
Methacrylates
Polymer matrix
Polymer films
Pyridine
Stretching
Compaction
Ligands
Heating
Recovery
polymethacrylic acid
2,6-bis(N-methylbenzimidazol-2-yl)pyridine

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemistry(all)

Cite this

Vapochromic and mechanochromic films from square-planar platinum complexes in polymethacrylates. / Kumpfer, Justin R.; Taylor, Stephen D.; Connick, William B.; Rowan, Stuart J.

In: Journal of Materials Chemistry, Vol. 22, No. 28, 28.07.2012, p. 14196-14204.

Research output: Contribution to journalArticle

Kumpfer, Justin R. ; Taylor, Stephen D. ; Connick, William B. ; Rowan, Stuart J. / Vapochromic and mechanochromic films from square-planar platinum complexes in polymethacrylates. In: Journal of Materials Chemistry. 2012 ; Vol. 22, No. 28. pp. 14196-14204.
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