Synthesis of multiarm star block copolymer based on host-guest inclusion complexation

Year 2022, , 1 - 15, 31.01.2022

Neşe Çakır Yiğit Gürkan Hızal Ümit Tunca

https://doi.org/10.29228/JIENS.54191

Abstract

Supramolecular multiarm star block copolymer ((CD-PEG)p-(Ada-PS)n-polyDVB) was prepared by host-guest interaction of -cyclodextrin ( -CD) end functionalized polyethylene glycol (-CD-PEG) and adamantane peripherally functionalized multiarm star polymer ((Ada-PS)n-polyDVB). The -CD-PEG was synthesized by copper-catalyzed azide/alkyne cycloaddition reaction (CuAAC) of alkyne functional PEG with mono azide functional β-CD (β-CD-N3). Adamantane functional polystyrene (Ada-PS) was prepared by atom transfer radical polymerization (ATRP) of styrene (St) and was allowed to react with divinyl benzene (DVB) as a linking agent giving (Ada-PS)n-polyDVB multiarm star polymer. The structures of -CD-PEG and (Ada-PS)n-polyDVB multiarm star formation were determined by 1H NMR and GPC. 2D ROESY NMR and DLS analysis of (CD-PEG)p-(Ada-PS)n-polyDVB were carried out to validate the formation of the inclusion complex. The evidence of increased molecular weights and size distributions supported the supramolecular multiarm star block copolymer formation.

Keywords

Star Polymer, ATRP, CuAAC click, Host-guest interaction

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