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Issue 8, 2016
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Synthesis and characterization of new photoswitchable azobenzene-containing poly(ε-caprolactones)

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Abstract

A novel and efficient strategy in obtaining series of mono- and bi-armed azobenzene-containing poly(ε-caprolactone)s is described, starting from a commercially available azobenzene dye via azide/alkyne-“click”-reactions. The attachment of alkyne-telechelic poly(ε-caprolactone)s (1 kDa and 3 kDa), followed by chromatographic separation, allowed the attachment of either one or two PCl-chains to either side of the azobenzene-dye. The resulting mono- and bi-armed photo-switchable polymers are fully characterized by 2D-NMR techniques and show a high thermal stability. Additionally liquid chromatography at critical conditions (LCCC) coupled to ESI-TOF allowed us to prove the presence of either one or two polymer chains affixed onto the central azobenzene dye.

Graphical abstract: Synthesis and characterization of new photoswitchable azobenzene-containing poly(ε-caprolactones)

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Publication details

The article was received on 27 Nov 2015, accepted on 23 Dec 2015 and first published on 05 Jan 2016


Article type: Paper
DOI: 10.1039/C5RA25216D
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RSC Adv., 2016,6, 6358-6367
  • Open access: Creative Commons BY-NC license
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    Synthesis and characterization of new photoswitchable azobenzene-containing poly(ε-caprolactones)

    C. Appiah, K. R. Siefermann, M. Jorewitz, H. Barqawi and W. H. Binder, RSC Adv., 2016, 6, 6358
    DOI: 10.1039/C5RA25216D

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