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Stimulus-responsive Nanoparticles and Associated (Reversible) Polymorphism via Polymerization Induced Self-assembly (PISA)

Pei, Y, Lowe, AB and Roth, PJ (2016) Stimulus-responsive Nanoparticles and Associated (Reversible) Polymorphism via Polymerization Induced Self-assembly (PISA) Macromolecular Rapid Communications.

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Abstract

Polymerization-induced self-assembly (PISA) is an extremely versatile method for the in situ preparation of soft-matter nanoparticles of defined size and morphologies at high concentrations suitable for large-scale production. Recently, certain PISA-prepared nanoparticles have been shown to exhibit reversible polymorphism (“shape-shifting”), typically between micellar, worm-like, and vesicular phases (order–order transitions), in response to external stimuli including temperature, pH, electrolytes, and chemical modification. This review summarises the literature to date and describes molecular requirements for the design of stimulus-responsive nano-objects. Reversible pH-responsive behaviour is rationalised in terms of increased solvation of reversibly ionised groups. Temperature-triggered order–order transitions, conversely, do not rely on inherently thermo-responsive polymers, but are explained based on interfacial LCST or UCST behaviour that affects the volume fractions of the core and stabilizer blocks. Irreversible morphology transitions, on the other hand, can result from chemical post-modification of reactive PISA-made particles. Emerging applications and future research directions of this ‘smart’ nanoparticle behaviour are reviewed.

Item Type: Article
Subjects : Chemistry
Divisions : Faculty of Engineering and Physical Sciences > Chemistry
Authors :
AuthorsEmailORCID
Pei, YUNSPECIFIEDUNSPECIFIED
Lowe, ABUNSPECIFIEDUNSPECIFIED
Roth, PJUNSPECIFIEDUNSPECIFIED
Date : 30 November 2016
Identification Number : https://doi.org/10.1002/marc.201600528
Copyright Disclaimer : This is the peer reviewed version of the following article: Stimulus-responsive Nanoparticles and Associated (Reversible) Polymorphism via Polymerization Induced Self-assembly (PISA)], which has been published in final form at http://doi.org/10.15126/10.1002/marc.201600528. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 11 Oct 2016 08:56
Last Modified : 06 Dec 2016 15:40
URI: http://epubs.surrey.ac.uk/id/eprint/812364

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