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Hyperbranched polydendrons- a new controlled macromolecular architecture (Hatton et al) 2014 Chem Sci.pdf (986.44 kB)

Hyperbranched polydendrons: a new controlled macromolecular architecture with self-assembly in water and organic solvents

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posted on 2019-09-16, 10:09 authored by Fiona HattonFiona Hatton, Pierre Chambon, Tom O McDonald, Andrew Owen, Steven P Rannard

A new macromolecular architecture (hyperbranched polydendrons) is presented. Combining aspects of linear-dendritic hybrids, controlled radical polymerisation and branched vinyl polymerisation, the materials have very high molecular weight (Mw > 1 MDa) and surface functionality. Although dispersities are broad (Đ up to 25) the structures behave with remarkable uniformity upon manipulation of solvent environment. Comparisons of conventional linear-dendritic hybrids and hyperbranched polydendrons are presented, including aspects of their synthesis. Under solvent exchange in organic media, a reversible self-assembly to form monodispersed nanoparticles (PDI as low as 0.013) is observed. Self-assembly and encapsulation is also observed during aqueous nanoprecipitation of the hyperbranched materials, with nanoparticle size (diameters from 60–140 nm) controlled through modification of precipitation conditions and the generation of the ideally branched dendrons at one end of each primary chain. The aqueous nanoparticles are highly stable and offer considerable opportunities for tailored functionality and future advanced applications.


Funding

Engineering and Physical Sciences Research Council for PhD studentship (FL) and grant funding (EP/I038721/1)

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Chemical Science

Volume

5

Issue

5

Pages

1844 - 1853

Publisher

Royal Society of Chemistry (RSC)

Version

  • VoR (Version of Record)

Rights holder

© The Royal Society of Chemistry

Acceptance date

2014-02-05

Publication date

2014-02-06

Copyright date

2014

ISSN

2041-6520

eISSN

2041-6539

Language

  • en

Depositor

Dr Fiona Hatton

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