Wavelength-resolved PhotoATRP
The careful mapping of photoinduced reversible-deactivation radical polymerizations (RDRP) is a prerequisite for their applications in soft matter materials design. Here, we probe the wavelength-dependent behavior of photochemically induced atom transfer radical polymerization (ATRP) using nanosecon...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
January 10, 2022
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| In: |
Journal of the American Chemical Society
Year: 2022, Jahrgang: 144, Heft: 3, Pages: 1094-1098 |
| ISSN: | 1520-5126 |
| DOI: | 10.1021/jacs.1c11259 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/jacs.1c11259
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| Verfasserangaben: | Martina Nardi, Eva Blasco and Christopher Barner-Kowollik |
| Zusammenfassung: | The careful mapping of photoinduced reversible-deactivation radical polymerizations (RDRP) is a prerequisite for their applications in soft matter materials design. Here, we probe the wavelength-dependent behavior of photochemically induced atom transfer radical polymerization (ATRP) using nanosecond pulsed-laser polymerization (PLP). The photochemical reactivities at identical photon fluxes of methyl acrylate in terms of conversion, number-average molecular weight, and dispersity of the resulting polymers are mapped against the absorption spectrum of the copper(II) catalyst in the range of 305-550 nm. We observe a red shift of the action spectrum relative to the absorption spectrum of the copper(II) catalyst. Both the number-average molecular weight and the dispersity show a wavelength dependence, while the molecular weight and conversion remain linearly correlated. The reported data allow the judicious selection of optimum wavelengths for photoATRP. |
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| Beschreibung: | Gesehen am 03.05.2022 |
| Beschreibung: | Online Resource |
| ISSN: | 1520-5126 |
| DOI: | 10.1021/jacs.1c11259 |