Amphiphilic liquid-crystal block copolymer nanofibers via RAFT-mediated dispersion polymerization

Zhang, Xuewei; Boissé, Stéphanie; Bui, Chuong; Albouy, Pierre‐Antoine; Brûlet, Annie; Li, Min-Hui; Rieger, Jutta; Charleux, Bernadette

doi:10.1039/c1sm06598j

Cited by 106 publications

(149 citation statements)

References 45 publications

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“…A study on the use of benzyl and t-butyl trithiocarbonate and dithiobenzoate RAFT agents for VAc polymerization has 334 [385] 335 [540] 336 [429] 337 [202] 338 [242] 339 [262] 340 [317] Solketal acrylate 350 [311] 347 [344] 346 [344] 343 n ϭ 1 [234] 343 n ϭ 2 [196] 345 n ϭ 4 [362] 351 [297] 342 [196] 341 [428] 348 [311] 349 [311] 394 [396] Chart 3.…”

Section: Vinyl Monomersmentioning

confidence: 99%

“…C 12 H 25 S S S I* [388] 306 [389] DMAm [326,[390][391][392] (DMAm) [326] St [370] St [393] PFS [200] 4VP [200,394] 390 [395] Ip [396] 394 [396] AA [397] NIPAm [367,392,398] NVC [387] (NVP) [399] PAA/NIPAm [189] AA/ PEGA [234,400] (tBMA/DMAEMA/290) [175] HEA/PEGA [401] PA/PEGA [401] AA-b-St [393] St/406 [402] HEMA/Ip [396] HEA/Ip [396] Ip/ 394 [396] AA/PEGA-b-343 [234] AA/PEGA-bSt [400] DMAm/296 [390] DMAm/PFS [169] 306-b-St [389] HADA/MADA/NLAA [403] HADM/ MADM/NLAM [403] AA/PEGA-b-344 [362] AAb-St [397] DMAm-b-NIPAm [390] DMAm/296-b-NIPAm [390] DMAm-b-NIPAm/296 [390] DMAm/296-b-NIPAm/296 [390] NIPAm-bDMAEAm [367] PFS-b-PFPVS …”

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confidence: 99%

“…DMAm [348] DMAm-b-HEAm [348] 97 n ϭ 1 or 2 [349,350] DEAEMA [351] DMAEMA [350,352] PEGMA [224,[353][354][355] (412) [243] PAA [356] DMAm [326] DMAm [326] HPMAm [357] 357 [357] MAA/PEGMA [354] APMAm/DEAPMAm [358] APMAm/DMAPMAm [358] DEAEMA-bNIPAm [351] DMEAEMA-b-NIPAm [359] PEGMA/MAA-b-St [354,360] PEGMA/MAA-bBzMA [361] PEGMA/MAA-b-327 [362] PAA-bDMAm/408 [356] DMAEMA-b-(PAA/BMA/ DMAEMA) [350,352] HPMAm/450/451 [363] HPMAm-b-357 [357] 98 [364] 317 [311] 332 [365] 333 [365] DMAm [366] BA [366] 350 [311] NIPAm [366,367] MAA/ MMA [368] MAA/DFHA [369] OeMA/MMA [364] 332-b-MMA [365] 333-b-MMA [365] NIPAm-bDMAEAm [367] 99…”

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Living Radical Polymerization by the RAFT Process – A Third Update

2012

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This paper provides a third update to the review of reversible deactivation radical polymerization (RDRP) achieved with thiocarbonylthio compounds (ZC(¼S)SR) by a mechanism of reversible addition-fragmentation chain transfer ( Chem. 2009Chem. , 62, 1402. This review cites over 700 publications that appeared during the period mid 2009 to early 2012 covering various aspects of RAFT polymerization which include reagent synthesis and properties, kinetics and mechanism of polymerization, novel polymer syntheses, and a diverse range of applications. This period has witnessed further significant developments, particularly in the areas of novel RAFT agents, techniques for end-group transformation, the production of micro/nanoparticles and modified surfaces, and biopolymer conjugates both for therapeutic and diagnostic applications.

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Section: Vinyl Monomersmentioning

confidence: 99%

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confidence: 99%

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Living Radical Polymerization by the RAFT Process – A Third Update

2012

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“…Given that these diblock copolymer nanoparticles can be prepared directly in water at relatively low solution viscosities at up to 25 % solids, such 45 robust surfactant-free formulations appear to offer real potential for various commercial applications, including readily sterilizable gels 15 new vectors for intracellular delivery 27 and novel Pickering emulsifiers. 28 Similarly, RAFT dispersion polymerization in polar solvents 50 such as lower alcohols has been extensively explored by Pan et al, [29][30][31][32][33][34] by Charleux and co-workers, 35,36 and also by our own research group. 25,26 Again, pure spherical, worm-like and vesicular morphologies have all been observed, depending on the targeted diblock composition.…”

Section: Introductionmentioning

confidence: 99%

RAFT dispersion polymerization in non-polar solvents: facile production of block copolymer spheres, worms and vesicles in n-alkanes

et al. 2013

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ABSTRACT. Well-defined poly(lauryl methacrylate-benzyl methacrylate) (PLMA-PBzMA) diblock copolymer nanoparticles are prepared in n-heptane at 90°C via reversible addition-fragmentation chain transfer (RAFT) polymerization. Under these conditions, the PLMA macromolecular chain transfer agent (macro-CTA) is soluble in n-heptane, whereas the growing PBzMA block quickly becomes insoluble. Thus this dispersion polymerization formulation leads to polymerization-induced self-assembly (PISA). 10Using a relatively long PLMA macro-CTA with a mean degree of polymerization (DP) of 37 or higher leads to the formation of well-defined spherical nanoparticles of 41 to 139 nm diameter, depending on the DP targeted for the PBzMA block. In contrast, TEM studies confirm that using a relatively short PLMA macro-CTA (DP = 17) enables both worm-like and vesicular morphologies to be produced, in addition to the spherical phase. A detailed phase diagram has been elucidated for this more asymmetric diblock 15 copolymer formulation, which ensures that each phase can be targeted reproducibly.1 H NMR spectroscopy confirmed that high BzMA monomer conversions (> 97 %) were achieved within 5 h, while GPC studies indicated that reasonably good blocking efficiencies and relatively low diblock copolymer polydispersities (M w /M n < 1.30) were obtained in most cases. Compared to prior literature reports, this allmethacrylic PISA formulation is particularly novel because: (i) it is the first time that higher order 20 morphologies (e.g. worms and vesicles) have been accessed in non-polar solvents and (ii) such diblock copolymer nano-objects are particularly relevant to potential boundary lubrication applications for engine oils.

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“…[36][37][38][39] To date, we are only aware of one example of a semi-crystalline block being used in a PISA formulation. 40 Potential advantages of using such core-forming blocks could be (i) production of relatively stiff worms whose rigidity could be tuned by varying the temperature and (ii) preparation of vesicles with more impermeable membranes that enable better encapsulation performance.…”

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Semi-crystalline diblock copolymer nano-objects prepared via RAFT alcoholic dispersion polymerization of stearyl methacrylate

et al. 2015

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nano-objects prepared via RAFT alcoholic dispersion polymerization of stearyl methacrylate. Polymer Chemistry, 6 (10). pp. 1751 -1757 . ISSN 1759 https://doi.org/10.1039/c4py01664e eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. Semi-Crystalline Diblock Copolymer Nano-Objects Prepared via RAFT Alcoholic Dispersion Polymerization of Stearyl MethacrylateMona Semsarilar, Nicholas J. W. Penfold, Elizabeth R. Jones and Steven P. Armes* Abstract. The RAFT dispersion polymerization of stearyl methacrylate (SMA) is conducted in ethanol at 70°C using a poly(2-(dimethylamino)ethyl methacrylate) [PDMA] chain transfer agent. The growing PSMA block becomes insoluble in ethanol, which leads to polymerization-induced self-assembly (PISA) and hence produces a range of copolymer morphologies depending on the precise PDMA y -PSMA x formulation. More specifically, pure phases corresponding to either spherical nanoparticles, worm-like nanoparticles or vesicles can be prepared as judged by transmission electron microscopy. However, the worm phase space is relatively narrow, so construction of a detailed phase diagram is required for reproducible syntheses of this morphology. Interdigitation of the stearyl (C 18 ) side-groups leads to a semi-crystalline PSMA core block and the effect of systematically varying the mean degree of polymerization of both the PDMA and PSMA blocks on the T m and T c is investigated using differential scanning calorimetry. Finally, it is demonstrated that these cationic nanoparticles can be employed as colloidal templates for the in situ deposition of silica from aqueous solution.

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Amphiphilic liquid-crystal block copolymer nanofibers via RAFT-mediated dispersion polymerization

Cited by 106 publications

References 45 publications

Living Radical Polymerization by the RAFT Process – A Third Update

Living Radical Polymerization by the RAFT Process – A Third Update

RAFT dispersion polymerization in non-polar solvents: facile production of block copolymer spheres, worms and vesicles in n-alkanes

Semi-crystalline diblock copolymer nano-objects prepared via RAFT alcoholic dispersion polymerization of stearyl methacrylate

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