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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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Palmans, Ara Anja
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (36/36 displayed)
- 2024Enhanced Efficiency of Pd(0)-Based Single Chain Polymeric Nanoparticles for in Vitro Prodrug Activation by Modulating the Polymer’s Microstructurecitations
- 2023Dynamic covalent networks with tunable dynamicity by mixing acylsemicarbazides and thioacylsemicarbazidescitations
- 2022Elucidating the Stability of Single-Chain Polymeric Nanoparticles in Biological Media and Living Cellscitations
- 2022Developing Pd(ii) based amphiphilic polymeric nanoparticles for pro-drug activation in complex mediacitations
- 2022Spectrally PAINTing a Single Chain Polymeric Nanoparticle at Super-Resolutioncitations
- 2021Compartmentalized Polymers for Catalysis in Aqueous Mediacitations
- 2021Consequences of Chirality in Directing the Pathway of Cholesteric Helix Inversion of π-Conjugated Polymers by Lightcitations
- 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
- 2019Equilibrium model for supramolecular copolymerizationscitations
- 2018Supramolecular block copolymers under thermodynamic controlcitations
- 2018Supramolecular block copolymers under thermodynamic control
- 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
- 2013Orthogonal self-assembly in folding block copolymerscitations
- 2012Benzene-1,3,5-tricarboxamide : a versatile ordering moiety for supramolecular chemistry
- 2012Benzene-1,3,5-tricarboxamide : a versatile ordering moiety for supramolecular chemistrycitations
- 2010Hydrolases part I : enzyme mechanism, selectivity and control in the synthesis of well-defined polymerscitations
- 2007Supramolecular copolyesters with tunable properties
- 2007Supramolecular copolyesters with tunable propertiescitations
- 2007Poly(caprolactone-co-oxo-crown ether)-based poly(urethane)urea for soft tissue engineering applicationscitations
- 2006Oxo-crown-ethers as comonomers for tuning polyester properties
- 2006Oxo-crown-ethers as comonomers for tuning polyester propertiescitations
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article
Stereocomplexes of discrete, isotactic lactic acid oligomers conjugated with oligodimethylsiloxanes
Abstract
<p>Discrete length block co-oligomers (BCOs) comprised of a crystalline and an amorphous block are a new class of materials that gives highly ordered lamellar morphologies at small length scales. Here, we show the preparation of discrete, isotactic oligo l- and d-lactic acid (olLA and odLA) homoblocks followed by ligation to oligodimethylsiloxane (oDMS), affording a library of crystalline-amorphous BCOs that vary in molecular weight and composition. Mixing the two enantiomeric BCOs or homoblocks results in the formation of the corresponding stereocomplex. The properties and phase behavior of the isotactic (block co)oligomers and the stereocomplexes thereof are studied using differential scanning calorimetry and small-angle X-ray scattering. A systematic study of the isotactic homoblock lengths and crystal structure confirmed the formation of a 10<sub>3</sub>helix with a monomeric rise of 0.3 nm, whereas the stereocomplex adopts a 3<sub>1</sub>helix. The same type of crystal structure was found for the isotactic and stereocomplex of BCOs giving rise to the formation of lamellar morphologies at room temperature as a result of crystallization of the oLA blocks. Distorted lamellar structures were found in BCOs that preorganize into nonlamellar morphologies prior to crystallization. The stereocomplex BCOs shows more crystal defects and a loss of long-range ordering in the microstructure due to the larger driving force for crystallization. Hence, the balance between chain length, block volume, and the crystallization strength are of major importance for the formation of the final structure with the least defects.</p>