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

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.

Authors:
ORCiD logo [1];  [2];  [3];  [2];  [2]; ORCiD logo [2];  [2];  [2];  [4]; ORCiD logo [2];  [2]; ORCiD logo [5]; ORCiD logo [5];  [6];  [2]; ORCiD logo [7];  [2];  [2]; ORCiD logo [2];  [8] more »;  [8]; ORCiD logo [8]; ORCiD logo [3] « less
  1. Univ. of Bath, Bath (United Kingdom); The Cambridge Crystallographic Data Centre, Cambridge (United Kingdom)
  2. Univ. of Bath, Bath (United Kingdom)
  3. Univ. of Bath, Bath (United Kingdom); Rutherford Appleton Lab., Oxfordshire (United Kingdom)
  4. Rutherford Appleton Lab., Oxfordshire (United Kingdom)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  6. Diamond Light Source, Oxfordshire (United Kingdom)
  7. Univ. of Bath, Bath (United Kingdom); Yonsei Univ., Seoul (Korea)
  8. Univ. of Edinburgh, Edinburgh (United Kingdom)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1417623
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Bryant, M. J., Skelton, J. M., Hatcher, L. E., Stubbs, C., Madrid, E., Pallipurath, A. R., Thomas, L. H., Woodall, C. H., Christensen, J., Fuertes, S., Robinson, T. P., Beavers, C. M., Teat, S. J., Warren, M. R., Pradaux-Caggiano, F., Walsh, A., Marken, F., Carbery, D. R., Parker, S. C., McKeown, N. B., Malpass-Evans, R., Carta, M., and Raithby, P. R. A rapidly-reversible absorptive and emissive vapochromic Pt(II) pincer-based chemical sensor. United States: N. p., 2017. Web. doi:10.1038/s41467-017-01941-2.
Bryant, M. J., Skelton, J. M., Hatcher, L. E., Stubbs, C., Madrid, E., Pallipurath, A. R., Thomas, L. H., Woodall, C. H., Christensen, J., Fuertes, S., Robinson, T. P., Beavers, C. M., Teat, S. J., Warren, M. R., Pradaux-Caggiano, F., Walsh, A., Marken, F., Carbery, D. R., Parker, S. C., McKeown, N. B., Malpass-Evans, R., Carta, M., & Raithby, P. R. A rapidly-reversible absorptive and emissive vapochromic Pt(II) pincer-based chemical sensor. United States. https://doi.org/10.1038/s41467-017-01941-2
Bryant, M. J., Skelton, J. M., Hatcher, L. E., Stubbs, C., Madrid, E., Pallipurath, A. R., Thomas, L. H., Woodall, C. H., Christensen, J., Fuertes, S., Robinson, T. P., Beavers, C. M., Teat, S. J., Warren, M. R., Pradaux-Caggiano, F., Walsh, A., Marken, F., Carbery, D. R., Parker, S. C., McKeown, N. B., Malpass-Evans, R., Carta, M., and Raithby, P. R. Mon . "A rapidly-reversible absorptive and emissive vapochromic Pt(II) pincer-based chemical sensor". United States. https://doi.org/10.1038/s41467-017-01941-2. https://www.osti.gov/servlets/purl/1417623.
@article{osti_1417623,
title = {A rapidly-reversible absorptive and emissive vapochromic Pt(II) pincer-based chemical sensor},
author = {Bryant, M. J. and Skelton, J. M. and Hatcher, L. E. and Stubbs, C. and Madrid, E. and Pallipurath, A. R. and Thomas, L. H. and Woodall, C. H. and Christensen, J. and Fuertes, S. and Robinson, T. P. and Beavers, C. M. and Teat, S. J. and Warren, M. R. and Pradaux-Caggiano, F. and Walsh, A. and Marken, F. and Carbery, D. R. and Parker, S. C. and McKeown, N. B. and Malpass-Evans, R. and Carta, M. and Raithby, P. R.},
abstractNote = {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.},
doi = {10.1038/s41467-017-01941-2},
journal = {Nature Communications},
number = 1,
volume = 8,
place = {United States},
year = {Mon Nov 27 00:00:00 EST 2017},
month = {Mon Nov 27 00:00:00 EST 2017}
}

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Figures / Tables:

Fig. 1 Fig. 1: Structure and electronic properties of Pt-pincer complexes. a Structure of general Pt-polypyridine pincer complexes with N^C^N (left), N^N^C (centre) and C^N^C (right) pincer ligands. b The valence Pt dxy and dxz orbitals interact strongly with π-type molecular orbitals on the monodentate ancillary ligand (left), while the $d_{z^{2}}$ orbitalsmore » of adjacent molecules can interact in the stacked geometry typically adopted in the solid state (right). c By adjusting the ancillary ligand, the energy of the $d_{z^{2}}$ orbital relative to the highest-occupied molecular orbital (HOMO) can be manipulated, making the optical properties more sensitive to the solid-state stacking« less

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.