Journal ArticleDOI
Visible Light-Mediated Polymerization-Induced Self-Assembly in the Absence of External Catalyst or Initiator
TLDR
In this article, the use of visible light to mediate a RAFT dispersion polymerization in the absence of external catalyst or initiator to yield nanoparticles of different morphologies according to a polymerization-induced self-assembly (PISA) mechanism was reported.Abstract:
We report the use of visible light to mediate a RAFT dispersion polymerization in the absence of external catalyst or initiator to yield nanoparticles of different morphologies according to a polymerization-induced self-assembly (PISA) mechanism. A POEGMA macro-chain transfer agent (macro-CTA) derived from a 4-cyano-4-((dodecylsulfanylthiocarbonyl)sulfanyl)pentanoic acid (CDTPA) RAFT agent can be activated under blue (460 nm, 0.7 mW/cm2) or green (530 nm, 0.7 mW/cm2) light and act simultaneously as a radical initiator, chain transfer agent, and particle stabilizer under ethanolic dispersion conditions. In particular, the formation of worm-like micelles was readily monitored by the increase of reaction viscosity during the polymerization; this method was shown to be particularly robust to different reaction parameters such as macro-CTAs of varying molecular weight. Interestingly, at high monomer conversion, different morphologies were formed depending on the wavelength of light employed, which may be due t...read more
Citations
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Journal ArticleDOI
One-pot RAFT and fast polymersomes assembly: a ‘beeline’ from monomers to drug-loaded nanovectors
Francesca Mastrotto,Alastair F. Breen,Giovanna Sicilia,S. Murdan,Alexander D. Johnstone,Georgina E. Marsh,Christine Grainger-Boultby,Noah A. Russell,Cameron Alexander,Giuseppe Mantovani +9 more
TL;DR: In this paper, the authors describe a novel strategy where polymersomes are prepared through an in-line process in just a few hours, starting from simple acrylate or acrylamide monomers.
Journal ArticleDOI
Sunlight-Induced RAFT Synthesis of Multifaceted Glycopolymers with Surface Anchoring, In Situ AgNP Formation, and Antibacterial Properties
TL;DR: In this article, a multifaceted glycopolymer is designed for the convenient and universal fabrication of antibacterial surfaces, which can be used to effectively modify a variety of surfaces [silicon wafer, poly(dimethylsiloxane), and stainless steel].
Journal ArticleDOI
Electrostatic Manipulation of Triblock Terpolymer Nanofilm Compartmentalization during Aqueous Photoinitiated Polymerization-Induced Self-Assembly
TL;DR: In this article, the authors used visible light-initiated reversible addition-fragmentation chain transfer and aqueous dispersion polarity to achieve triblock terpolymer nanofilm compartmentalization.
Journal ArticleDOI
Towards nanoparticles with site-specific degradability by ring-opening copolymerization induced self-assembly in organic medium
Chen Zhu,Julien Nicolas +1 more
TL;DR: In this paper, reversible addition-fragmentation chain transfer (RAFT)-mediated radical ring-opening copolymerization-induced self-assembly (rROPISA) in heptane at 15 wt% solids was successfully applied to the copolymers with 2-methylene-1,3-dioxepane (MDO) from a poly(lauryl methacrylate) (PLMA) macro-RAFT agent.
Journal ArticleDOI
Enthalpic incompatibility between two steric stabilizer blocks provides control over the vesicle size distribution during polymerization-induced self-assembly in aqueous media
TL;DR: Gonzato et al. as discussed by the authors used two chemically distinct, enthalpically incompatible steric stabilizer blocks to ensure the desired microphase separation across the vesicle membrane, which leads to the formation of well-defined vesicles of around 200 nm diameter (size polydispersity = 13-16%) in aqueous media at 10% w/w solids as judged by transmission electron microscopy, dynamic light scattering and smallangle X-ray scattering.
References
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Journal ArticleDOI
Living Radical Polymerization by the RAFT Process - A Second Update
TL;DR: The authors provides a third update to the review of reversible deactivation radical polymerization (RDRP) achieved with thiocarbonylthio compounds (ZC(S)SR) by a mechanism of reversible addition-fragmentation chain transfer (RAFT) that was published in June 2005.
Journal ArticleDOI
Polymerization-Induced Self-Assembly of Block Copolymer Nano-objects via RAFT Aqueous Dispersion Polymerization
TL;DR: This approach has quickly become a powerful and versatile technique for the synthesis of a wide range of bespoke organic diblock copolymer nano-objects of controllable size, morphology, and surface functionality.
Journal ArticleDOI
Light-Controlled Radical Polymerization: Mechanisms, Methods, and Applications
TL;DR: A comprehensive survey of photo-CRP reactions can be found in this article, where a large number of methods are summarized and further classified into subcategories based on the specific reagents, catalysts, etc., involved.
Journal ArticleDOI
Metal-Free Atom Transfer Radical Polymerization
Nicolas J. Treat,Hazel Sprafke,John W. Kramer,Paul G. Clark,Bryan E. Barton,Javier Read de Alaniz,Brett P. Fors,Craig J. Hawker,Craig J. Hawker +8 more
TL;DR: A metal-free ATRP process, mediated by light and catalyzed by an organic-based photoredox catalyst, is reported that resulted in block copolymer formation was facile and could be combined with other controlled radical processes leading to structural and synthetic versatility.
Journal ArticleDOI
A Robust and Versatile Photoinduced Living Polymerization of Conjugated and Unconjugated Monomers and Its Oxygen Tolerance
TL;DR: A photoinduced living polymerization technique is reported, which is able to polymerize a large range of monomers, including conjugated and unconjugated monomer, using ultralow concentrations of an iridium-based photoredox catalyst and a low energy visible LED as the light source.