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- W2563173846 abstract "Cyclodextrin (CD)-threaded polyrotaxanes (PRXs) with reactive functional groups at the terminals of the axle polymers are attractive candidates for the design of supramolecular materials. Herein, we describe a novel and simple synthetic method for end-reactive PRXs using bis(2-amino-3-phenylpropyl) poly(ethylene glycol) (PEG-Ph-NH 2 ) as an axle polymer and commercially available 4-substituted benzoic acids as capping reagents. The terminal 2-amino-3-phenylpropyl groups of PEG-Ph-NH 2 block the dethreading of the α-CDs after capping with 4-substituted benzoic acids. By this method, two series of azide group-terminated polyrotaxanes (benzylazide: PRX-Bn-N 3, phenylazide: PRX-Ph-N 3, ) were synthesized for functionalization via click reactions. The PRX-Bn-N 3 and PRX-Ph-N 3 reacted quickly and efficiently with p -( tert -butyl)phenylacetylene via copper-catalyzed click reactions. Additionally, the terminal azide groups of the PRX-Bn-N 3 could be modified with dibenzylcyclooctyne (DBCO)-conjugated fluorescent molecules via a copper-free click reaction; this fluorescently labeled PRX was utilized for intracellular fluorescence imaging. The method of synthesizing end-reactive PRXs described herein is simple and versatile for the design of diverse functional PRXs and can be applied to the fabrication of PRX-based supramolecular biomaterials." @default.
- W2563173846 created "2017-01-06" @default.
- W2563173846 creator A5011077630 @default.
- W2563173846 creator A5061077230 @default.
- W2563173846 creator A5082759615 @default.
- W2563173846 date "2016-12-28" @default.
- W2563173846 modified "2023-09-26" @default.
- W2563173846 title "Versatile synthesis of end-reactive polyrotaxanes applicable to fabrication of supramolecular biomaterials" @default.
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- W2563173846 doi "https://doi.org/10.3762/bjoc.12.287" @default.
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