Poly(methyl methacrylate)-supported polydiacetylene films: Unique chromatic transitions and molecular sensing

Kaviya Parambath Kootery, Hao Jiang, Sofiya Kolusheva, T. P. Vinod, Margarita Ritenberg, Leila Zeiri, Roman Volinsky, Danilo Malferrari, Paola Galletti, Emilio Tagliavini, Raz Jelinek

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

Polydiacetylenes (PDAs) constitute a family of conjugated polymers exhibiting unique colorimetric and fluorescence transitions, and have attracted significant interest as chemo- and biosensing materials. We spin-coated PDA films upon poly(methyl methacrylate) (PMMA), and investigated the photophysical properties and sensing applications of the new PDA configuration. Specifically, the as-polymerized blue PDA layer underwent distinct transformations to purple, red, and yellow phases, which could be quantified through conventional color scanning combined with application of image analysis algorithms. Furthermore, we recorded a reversible red-purple PDA transition that was induced by ultraviolet irradiation, a phenomenon that had not been reported previously in PDA film systems. We show that distinct color and fluorescence transitions were induced in the PMMA-supported PDA films by amphiphilic substances-surfactants and ionic liquids-and that the chromatic transformations were correlated to the analyte structures and properties. Overall, this study presents a new chromatic PDA film system in which noncovalent interactions between the PMMA substrate and spin-coated PDA give rise to distinct chromatic properties and molecular sensing capabilities.

Original languageEnglish
Pages (from-to)8613-8620
Number of pages8
JournalACS applied materials & interfaces
Volume6
Issue number11
DOIs
StatePublished - 11 Jun 2014

Keywords

  • PMMA
  • colorimetric sensors
  • polydiacetylene
  • spin coating
  • thin films

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