Size-dependent intercalation of alkylamines within polydiacetylene supramolecules

Bora Yoon, Justyn Jaworski, Jong Man Kim

Research output: Contribution to journalArticle

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Abstract

The structure of polydiacetylene (PDA) supramolecules offers carboxylic acid-terminated alkyl side-chains around a π conjugated polymer backbone. Exposure of these supramolecules to alkylamines induced disruption of the conjugated PDA backbone via intercalation as revealed by a colorimetric/ fluorometric response. This response is demonstrated to be dependent on the length of the alkylamine, offering a new view on intercalation in PDA systems with respect to supramolecules. It is found that this critical carbon chain length of alkylamine required to induce a colour change response must be greater than the alkyl side-chain length of PDA in order to interact with the conjugated backbone. Intercalation of longer species is also found to induce supramolecule aggregation resulting in destabilised PDA suspensions.

Original languageEnglish
Pages (from-to)54-59
Number of pages6
JournalSupramolecular Chemistry
Volume25
Issue number1
DOIs
Publication statusPublished - 2013 Jan 1

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Keywords

  • alkylamines
  • intercalation
  • polydiacetylenes
  • sensors
  • supramolecules

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