Journal article Open Access

Sulfur- and nitrogen-containing porous donor-acceptor polymers as real-time optical and chemical sensors

Kochergin, Yaroslav S.; Noda, Yu; Kulkarni, Ranjit; Škodáková, Klára; Tarábek, Ján; Schmidt, Johannes; Bojdys, Michael J.


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{
  "DOI": "10.1021/acs.macromol.9b01643", 
  "language": "eng", 
  "title": "Sulfur- and nitrogen-containing porous donor-acceptor polymers as real-time optical and chemical sensors", 
  "issued": {
    "date-parts": [
      [
        2019, 
        10, 
        1
      ]
    ]
  }, 
  "abstract": "<p>Fully aromatic, organic polymers have the advantage of being composed from light, abundant elements, and are hailed as candidates in electronic and optical devices &ldquo;beyond silicon&rdquo;, yet, applications that make use of their &pi;-conjugated backbone and optical bandgap are lacking outside of heterogeneous catalysis. Herein, we use a series of sulfur- and nitrogen-containing porous polymers (SNPs) as real-time optical and electronic sensors reversibly triggered and re-set by acid and ammonia vapors. Our SNPs incorporate donor-acceptor and donor-donor motifs in extended networks and enable us to study the changes in bulk conductivity, optical bandgap, and fluorescence life-times as a function of &pi;-electron de-/localization in the pristine and protonated states. Interestingly, we find that protonated donor-acceptor polymers show a decrease of the optical bandgap by 0.42 eV to 0.76 eV and longer fluorescence life-times. In contrast, protonation of a donor-donor polymer does not affect its bandgap; however, it leads to an increase of electrical conductivity by up to 25-fold and shorter fluorescence life-times. The design strategies highlighted in this study open new avenues towards useful chemical switches and sensors based on modular purely organic materials.</p>", 
  "author": [
    {
      "family": "Kochergin, Yaroslav S."
    }, 
    {
      "family": "Noda, Yu"
    }, 
    {
      "family": "Kulkarni, Ranjit"
    }, 
    {
      "family": "\u0160kod\u00e1kov\u00e1, Kl\u00e1ra"
    }, 
    {
      "family": "Tar\u00e1bek, J\u00e1n"
    }, 
    {
      "family": "Schmidt, Johannes"
    }, 
    {
      "family": "Bojdys, Michael J."
    }
  ], 
  "type": "article-journal", 
  "id": "3466483"
}
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