title: Poly(methyl methacrylate)-supported polydiacetylene films: unique chromatic transitions and molecular sensing.
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.
authors.affiliation: Department of Chemistry and ‡Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev , Beer Sheva 84105, Israel.
authors.forename: Kaviya
authors.initials: K
authors.lastname: Parambath Kootery
authors.forename: Hao
authors.initials: H
authors.lastname: Jiang
authors.forename: Sofiya
authors.initials: S
authors.lastname: Kolusheva
authors.forename: T P
authors.initials: TP
authors.lastname: Vinod
authors.forename: Margarita
authors.initials: M
authors.lastname: Ritenberg
authors.forename: Leila
authors.initials: L
authors.lastname: Zeiri
authors.forename: Roman
authors.initials: R
authors.lastname: Volinsky
authors.forename: Danilo
authors.initials: D
authors.lastname: Malferrari
authors.forename: Paola
authors.initials: P
authors.lastname: Galletti
authors.forename: Emilio
authors.initials: E
authors.lastname: Tagliavini
authors.forename: Raz
authors.initials: R
authors.lastname: Jelinek
mesh_terms: D008855:Microscopy, Electron, Scanning; D000078789:Polyacetylene Polymer; D011108:Polymers / Q000737:chemistry*; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D053279:Polyynes / Q000737:chemistry*; D013057:Spectrum Analysis / Q000379:methods
chemical_list: D000078789:Polyacetylene Polymer; D011108:Polymers; D053279:Polyynes; C082361:polydiacetylene; D019904:Polymethyl Methacrylate