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A rapidly-reversible absorptive and emissive vapochromic Pt(II) pincer-based chemical sensor

Author

Listed:
  • M. J. Bryant

    (University of Bath, Claverton Down
    The Cambridge Crystallographic Data Centre)

  • J. M. Skelton

    (University of Bath, Claverton Down)

  • L. E. Hatcher

    (University of Bath, Claverton Down
    Rutherford Appleton Laboratory, Harwell Oxford)

  • C. Stubbs

    (University of Bath, Claverton Down)

  • E. Madrid

    (University of Bath, Claverton Down)

  • A. R. Pallipurath

    (University of Bath, Claverton Down)

  • L. H. Thomas

    (University of Bath, Claverton Down)

  • C. H. Woodall

    (University of Bath, Claverton Down)

  • J. Christensen

    (Rutherford Appleton Laboratory, Harwell Oxford)

  • S. Fuertes

    (University of Bath, Claverton Down)

  • T. P. Robinson

    (University of Bath, Claverton Down)

  • C. M. Beavers

    (Lawrence Berkeley National Laboratory)

  • S. J. Teat

    (Lawrence Berkeley National Laboratory)

  • M. R. Warren

    (Harwell Science and Innovation Campus)

  • F. Pradaux-Caggiano

    (University of Bath, Claverton Down)

  • A. Walsh

    (University of Bath, Claverton Down
    Yonsei University)

  • F. Marken

    (University of Bath, Claverton Down)

  • D. R. Carbery

    (University of Bath, Claverton Down)

  • S. C. Parker

    (University of Bath, Claverton Down)

  • N. B. McKeown

    (University of Edinburgh)

  • R. Malpass-Evans

    (University of Edinburgh)

  • M. Carta

    (University of Edinburgh)

  • P. R. Raithby

    (University of Bath, Claverton Down
    Rutherford Appleton Laboratory, Harwell Oxford)

Abstract

Selective, robust and cost-effective chemical sensors for detecting small volatile-organic compounds (VOCs) have widespread applications in industry, healthcare and environmental monitoring. Here we design a Pt(II) pincer-type material with selective absorptive and emissive responses to methanol and water. The yellow anhydrous form converts reversibly on a subsecond timescale to a red hydrate in the presence of parts-per-thousand levels of atmospheric water vapour. Exposure to methanol induces a similarly-rapid and reversible colour change to a blue methanol solvate. Stable smart coatings on glass demonstrate robust switching over 104 cycles, and flexible microporous polymer membranes incorporating microcrystals of the complex show identical vapochromic behaviour. The rapid vapochromic response can be rationalised from the crystal structure, and in combination with quantum-chemical modelling, we provide a complete microscopic picture of the switching mechanism. We discuss how this multiscale design approach can be used to obtain new compounds with tailored VOC selectivity and spectral responses.

Suggested Citation

  • M. J. Bryant & J. M. Skelton & L. E. Hatcher & C. Stubbs & E. Madrid & A. R. Pallipurath & L. H. Thomas & C. H. Woodall & J. Christensen & S. Fuertes & T. P. Robinson & C. M. Beavers & S. J. Teat & M., 2017. "A rapidly-reversible absorptive and emissive vapochromic Pt(II) pincer-based chemical sensor," Nature Communications, Nature, vol. 8(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-01941-2
    DOI: 10.1038/s41467-017-01941-2
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