| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Meijer, Ew Bert
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (48/48 displayed)
- 2023Photoswitchable Liquid-to-Solid Transition of Azobenzene-Decorated Polysiloxanescitations
- 2021Consequences of Chirality in Directing the Pathway of Cholesteric Helix Inversion of π-Conjugated Polymers by Lightcitations
- 2021Unraveling the Complexity of Supramolecular Copolymerization Dictated by Triazine-Benzene Interactionscitations
- 2020Long-lived charge-transfer state from B−N frustrated Lewis pairs enchained in supramolecular copolymerscitations
- 2020Tuning polymer properties of non-covalent crosslinked PDMS by varying supramolecular interaction strengthcitations
- 2019Detailed approach to investigate thermodynamically controlled supramolecular copolymerizationscitations
- 2019Detailed approach to investigate thermodynamically controlled supramolecular copolymerizations
- 2019Stereocomplexes of discrete, isotactic lactic acid oligomers conjugated with oligodimethylsiloxanescitations
- 2019Future of supramolecular copolymers unveiled by reflecting on covalent copolymerizationcitations
- 2018Supramolecular block copolymers under thermodynamic controlcitations
- 2018Supramolecular block copolymers under thermodynamic control
- 2018Fragmentation of organic ions bearing fixed multiple charges observed in MALDI MS
- 2017Making waves in a photoactive polymer filmcitations
- 2017A four-blade light-driven plastic mill based on hydrazone liquid-crystal networkscitations
- 2017Self-assembly of hydrogen-bonding gradient copolymerscitations
- 2017Self-assembly of hydrogen-bonding gradient copolymers:sequence control via tandem living radical polymerization with transesterificationcitations
- 2015The coil-to-globule transition of single-chain polymeric nanoparticles with a chiral internal secondary structurecitations
- 2015Modular synthetic platform for the construction of functional single-chain polymeric nanoparticles:from aqueous catalysis to photosensitizationcitations
- 2015Modular synthetic platform for the construction of functional single-chain polymeric nanoparticlescitations
- 2014Consequences of block sequence on the orthogonal folding of triblock copolymerscitations
- 2014The effect of pendant benzene-1,3,5-tricarboxamides in the middle block of ABA triblock copolymers : synthesis and mechanical propertiescitations
- 2014Folding triblock copolymers
- 2014Folding polymers with pendant hydrogen bonding motifs in water : the effect of polymer length and concentration on the shape and size of single-chain polymeric nanoparticles
- 2014Folding polymers with pendant hydrogen bonding motifs in water : the effect of polymer length and concentration on the shape and size of single-chain polymeric nanoparticlescitations
- 2013Sticky Supramolecular Grafts Stretch Single Polymer Chainscitations
- 2013Nanostructured supramolecular block copolymers based on polydimethylsiloxane and polylactidecitations
- 2013Orthogonal self-assembly in folding block copolymerscitations
- 2010An overview on 12-polyurethane:Synthesis, structure and crystallizationcitations
- 2009Model transient networks from strongly hydrogen-bonded polymerscitations
- 2009Metastable supramolecular polymer nanoparticles via intramolecular collapse of single polymer chainscitations
- 2009Noncovalent synthesis of protein dendrimers
- 2008Molecular weight optimum in the mesoscopic order of chiral fluorene (Co)polymer filmscitations
- 2008Polymers with multiple hydrogen-bonded end groups and their blends
- 2007Poly(caprolactone-co-oxo-crown ether)-based poly(urethane)urea for soft tissue engineering applicationscitations
- 2006Chiral alignment of OPV chromophores: explitation of the ureidophtalimide based foldamer
- 2006Oxo-crown-ethers as comonomers for tuning polyester properties
- 2006Oxo-crown-ethers as comonomers for tuning polyester propertiescitations
- 2004Guest-host chemistry with dendrimers : stable polymer assemblies by rational designcitations
- 2003Highly emissive supramolecular oligo(p-phenylene vinylene) dendrimers
- 2002Highly ordered structures of amphiphilic polythiophenes in aqueous mediacitations
- 2002A soluble equivalent of the supramolecular, quasi-one-dimensional, semiconducting Magnus' green saltcitations
- 2001Complex dynamics of hydrogen bonded self-assembling polymers
- 2001Synthesis and properties of self organising semiconducting and luminescent polymers and model compounds
- 2000A scattering electro-optical switch based on dendrimers dispersed in liquid crystals
- 2000Micro-structure-mobility correlation in self-organised, conjugated polymer field-effect transistorscitations
- 2000Off-line size-exclusion chromatographic fractionation-matrix-assisted laser desorption ionization-time-of-flight mass spectrometry for polymer characterization. Theoretical and experimental study
- 2000Host-guest chemistry of dendritic moleculescitations
- 2000Supramolecular polymerscitations
Places of action
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article
Orthogonal self-assembly in folding block copolymers
Abstract
We herein report the synthesis and characterization of ABA triblock copolymers that contain two complementary association motifs and fold into single-chain polymeric nanoparticles (SCPNs) via orthogonal self-assembly. The copolymers were prepared using atom-transfer radical polymerization (ATRP) and possess different pendant functional groups in the A and B blocks (alcohols in the A block and acetylenes in the B block). After postfunctionalization, the A block contains o-nitrobenzyl-protected 2-ureidopyrimidinone (UPy) moieties and the B block benzene-1,3,5-tricarboxamide (BTA) moieties. While the protected UPy groups dimerize after photoinduced deprotection of the o-nitrobenzyl group, the BTA moieties self-assemble into helical aggregates when temperature is reduced. In a two-step thermal/photoirradiation treatment under dilute conditions, the ABA block copolymer forms both BTA-based helical aggregates and UPy dimers intramolecularly. The sequential association of the two self-assembling motifs results in single-chain folding of the polymer, affording nanometer-sized particles with a compartmentalized interior. Variable-temperature NMR studies showed that the BTA and UPy self-assembly steps take place orthogonally (i.e., without mutual interference) in dilute solution. In addition, monitoring of the intramolecular self-assembly of BTA moieties into helical aggregates by circular dichroism spectroscopy showed that the stability of the aggregates is almost independent of UPy dimerization. Size-exclusion chromatography (SEC) and small-angle X-ray scattering analysis provided evidence of significant reductions in the hydrodynamic volume and radius of gyration, respectively, after photoinduced deprotection of the UPy groups; a 30–60% reduction in the size of the polymer chains was observed using SEC in CHCl3. Molecular imaging by atomic force microscopy (AFM) corroborated significant contraction of individual polymer chains due to intramolecular association of the BTA and UPy groups. The stepwise folding process resulting from orthogonal self-assembly-induced supramolecular interactions yields compartmentalized SCPNs comprised of distinct microdomains that mimick two secondary-structuring elements in proteins.