Synthesis and Properties of Tetrathiafulvalene End-Functionalized Polymers Prepared via RAFT Polymerization

Bigot, J. A.; Charleux, Bernadette; Cooke, Graeme; Delattre, François; Fournier, David; Lyskawa, Joël; Stoffelbach, François; Woisel, Patrice

doi:10.1021/ma901809a

Cited by 17 publications

(19 citation statements)

References 52 publications

(80 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…) for both monomers in each copolymerization, indicating a pseudo first order polymerization behaviour. At the beginning of the DMAEMA and AEMA · HCI polymerizations, induction periods of around 2 h were observed for each monomer, which is often reported for RAFT polymerizations . However, for t BAEMA copolymerizations an increase in the induction period of the MMA was observed.…”

Section: Resultsmentioning

confidence: 56%

RAFT made methacrylate copolymers for reversible pH‐responsive nanoparticles

Yildirim

Rinkenauer

Weber

et al. 2015

J. Polym. Sci., Part A: Polym. Chem.

View full text Add to dashboard Cite

In this study, we designed and investigated pHresponsive nanoparticles based on different ratios of monomers with primary, secondary or tertiary amino groups. For this purpose, copolymers of methyl methacrylate (MMA) with different compositions of amino methacrylates (2-(dimethylamino)ethyl methacrylate (DMAEMA), 2-(tert-butylamino)ethyl methacrylate (tBAEMA) and 2-aminoethyl methacrylate hydrochloride (AEMAÁHCI)) were synthesized using the reversible addition-fragmentation chain transfer (RAFT) polymerization process. The controlled nature of the radical polymerization was demonstrated by kinetic studies. All copolymers show low dispersities ( -D M < 1.2) with amino contents between 9 and 21 mol %. For the nanoparticle formation, nanoprecipitation with subsequent solvent evaporation was used. All suspensions were characterized by dynamic light scattering (DLS) and scanning electron microscopy (SEM). Different initial conditions of the formulations resulted in differently sized nanoparticles that have monomodal size distributions, relatively narrow polydispersity index (PDI) values and positive zeta potential values. The pH-stability test results demonstrated that, depending on the structure and amount of the amino content, the obtained nanoparticles reveal a reversible pHresponse, such as dissolution at acidic pH values. The ability of the nanoparticles to encapsulate guest molecules was confirmed by pyrene fluorescence studies. The cytotoxicity assay results showed that the nanoparticles did not have any significant cytotoxic effect.

show abstract

Section: Resultsmentioning

confidence: 56%

RAFT made methacrylate copolymers for reversible pH‐responsive nanoparticles

Yildirim

Rinkenauer

Weber

et al. 2015

J. Polym. Sci., Part A: Polym. Chem.

View full text Add to dashboard Cite

show abstract

“…6). 45 When the SWV experiments of P3-CBPQT-Cl were recorded in the presence of P1 (purple line, Fig. 6), a significantly larger shift of À54 mV in the first reduction wave and a more marked drop in peak current was observed, presumably due to the formation of the P1-CBPQT-Cl complex and disassembly of the initial P3-CBPQT-Cl complex.…”

Section: Study Of Thermoresponsive Polymers In Watermentioning

confidence: 97%

Synthesis of thermoresponsive phenyl- and naphthyl-terminated poly(NIPAM) derivatives using RAFT and their complexation with cyclobis(paraquat-p-phenylene) derivatives in water

et al. 2010

Self Cite

View full text Add to dashboard Cite

A series of poly(N-isopropylacrylamide)s (poly(NIPAM)s) have been synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization from a functionalized chain transfer agent (CTA) bearing either dialkoxynaphthalene or dialkoxyphenylene moieties. After demonstrating the controlled character of the RAFT polymerization in the presence of these CTAs, well-defined functionalized poly(NIPAM)s with low PDIs and similar molecular weights were selected and subjected to lower critical solution temperature (LCST) measurements using UV-vis spectroscopy. We have investigated the complexation of the polymers with the tetracationic cyclophane cyclobis(paraquat-p-phenylene) (CBPQT 4+ ) and specifically the role the counter anion (Cl À , Br À , I À ) of the cyclophane has on the LCST. Moreover, we have shown that the addition of a competing end-functionalized naphthalene poly(NIPAM) guest to a (CBPQT 4+ )-endfunctionalized phenylene poly(NIPAM) complex results in the dethreading of the original architecture.

show abstract

“…29 In particular, its redox-tuneable complexation properties 30 and ability to form guest-specic coloured complexes in both organic and aqueous solvents by variation of the counter anions 31 will ensure that this macrocycle remains an important building block for the construction of supramolecular polymers 32 featuring responsive self-assembly properties. [33][34][35][36][37][38] In this article, we report the ability of a novel CBPQT 4+ terminated polymer, prepared using reversible addition-fragmentation chain transfer (RAFT) polymerization, to act as a host for the construction of multi-stimuli responsive supramolecular diblock copolymers with complementary guest-functionalized polymers. We have shown that these pseudorotaxane-like linked assemblies were able to be controlled by applying multiple stimuli including electrochemical oxidation/ reduction, temperature and the addition of competitive (macro)molecular guests (Fig.…”

Section: Introductionmentioning

confidence: 99%