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A protective layer approach to solvatochromic sensors

Author

Listed:
  • Jung Lee

    (Hanyang University)

  • Hyun Taek Chang

    (Hanyang University)

  • Hyosung An

    (Hanyang University)

  • Sora Ahn

    (Hanyang University)

  • Jina Shim

    (Hanyang University)

  • Jong-Man Kim

    (Hanyang University
    Institute of Nano Science and Technology, Hanyang University)

Abstract

As they have been designed to undergo colorimetric changes that are dependent on the polarity of solvents, the majority of conventional solvatochromic molecule based sensor systems inevitably display broad overlaps in their absorption and emission bands. As a result, colorimetric differentiation of solvents of similar polarity has been extremely difficult. Here we present a tailor-made colorimetric and fluorescence turn-on type solvatochromic sensor that enables facile identification of a specific solvent. The sensor system displays a colorimetric transition only when a thin protective layer, which protects the solvatochromic materials, is destroyed or disrupted by a specific solvent. The versatility of the strategy is demonstrated by designing a sensor that differentiates chloroform and dichloromethane colorimetrically and one that performs sequence selective colorimetric sensing. In addition, the approach is employed to construct a solvatochromic molecular AND logic gate. The new strategy could open new avenues for the development of novel solvatochromic sensors.

Suggested Citation

  • Jung Lee & Hyun Taek Chang & Hyosung An & Sora Ahn & Jina Shim & Jong-Man Kim, 2013. "A protective layer approach to solvatochromic sensors," Nature Communications, Nature, vol. 4(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3461
    DOI: 10.1038/ncomms3461
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