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Artículos de revistas sobre el tema "BAB triblocks"

Autor: Grafiati
Publicado: 25 de mayo de 2024

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1

Lim, Jongmin, Hideki Matsuoka, Yusuke Kinoshita, Shin-ichi Yusa y Yoshiyuki Saruwatari. "The Effect of Block Ratio and Structure on the Thermosensitivity of Double and Triple Betaine Block Copolymers". Molecules 29, n.º 2 (12 de enero de 2024): 390. http://dx.doi.org/10.3390/molecules29020390.

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AB-type and BAB-type betaine block copolymers composed of a carboxybetaine methacrylate and a sulfobetaine methacrylate, PGLBT-b-PSPE and PSPE-b-PGLBT-b-PSPE, respectively, were synthesized by one-pot RAFT polymerization. By optimizing the concentration of the monomer, initiator, and chain transfer agent, block extension with precise ratio control was enabled and a full conversion (~99%) of betaine monomers was achieved at each step. Two sets (total degree of polymerization: ~300 and ~600) of diblock copolymers having four different PGLBT:PSPE ratios were prepared to compare the influence of block ratio and molecular weight on the temperature-responsive behavior in aqueous solution. A turbidimetry and dynamic light scattering study revealed a shift to higher temperatures of the cloud point and micelle formation by increasing the ratio of PSPE, which exhibit upper critical solution temperature (UCST) behavior. PSPE-dominant diblocks created spherical micelles stabilized by PGLBT motifs, and the transition behavior diminished by decreasing the PSPE ratio. No particular change was found in the diblocks that had an identical AB ratio. This trend reappeared in the other set whose entire molecular weight approximately doubled, and each transition point was not recognizably impacted by the total molecular weight. For triblocks, the PSPE double ends provided a higher probability of interchain attractions and resulted in a more turbid solution at higher temperatures, compared to the diblocks which had similar block ratios and molecular weights. The intermediates assumed as network-like soft aggregates eventually rearranged to monodisperse flowerlike micelles. It is expected that the method for obtaining well-defined betaine block copolymers, as well as the relationship of the block ratio and the chain conformation to the temperature-responsive behavior, will be helpful for designing betaine-based polymeric applications.
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2

Song, Lichun, Hui Sun, Xiaolu Chen, Xia Han y Honglai Liu. "From multi-responsive tri- and diblock copolymers to diblock-copolymer-decorated gold nanoparticles: the effect of architecture on micellization behaviors in aqueous solutions". Soft Matter 11, n.º 24 (2015): 4830–39. http://dx.doi.org/10.1039/c5sm00859j.

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This work reports on the aqueous stimuli-responsive behaviors of an ABA triblock copolymer, a BAB triblock copolymer, an AB diblock copolymer and citrate-based gold nanoparticles decorated with AB diblock copolymers.
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3

Qu, Yaqing, Shuang Wang, Habib Khan, Chengqiang Gao, Heng Zhou y Wangqing Zhang. "One-pot preparation of BAB triblock copolymer nano-objects through bifunctional macromolecular RAFT agent mediated dispersion polymerization". Polymer Chemistry 7, n.º 10 (2016): 1953–62. http://dx.doi.org/10.1039/c5py01917f.

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4

Shao, Zhecheng y Patric Jannasch. "Single lithium-ion conducting poly(tetrafluorostyrene sulfonate) – polyether block copolymer electrolytes". Polymer Chemistry 8, n.º 4 (2017): 785–94. http://dx.doi.org/10.1039/c6py01910b.

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5

Voda, Andreea S., Kevin Magniez, Nisa V. Salim, Cynthia Wong y Qipeng Guo. "Synthesis and self-assembly behaviour of poly(Nα-Boc-l-tryptophan)-block-poly(ethylene glycol)-block-poly(Nα-Boc-l-tryptophan)". RSC Advances 6, n.º 29 (2016): 24142–53. http://dx.doi.org/10.1039/c6ra03718f.

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6

Biais, Pauline, Patricia Beaunier, François Stoffelbach y Jutta Rieger. "Loop-stabilized BAB triblock copolymer morphologies by PISA in water". Polymer Chemistry 9, n.º 35 (2018): 4483–91. http://dx.doi.org/10.1039/c8py00914g.

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7

Biais, Pauline, Olivier Colombani, Laurent Bouteiller, François Stoffelbach y Jutta Rieger. "Unravelling the formation of BAB block copolymer assemblies during PISA in water". Polymer Chemistry 11, n.º 28 (2020): 4568–78. http://dx.doi.org/10.1039/d0py00422g.

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BAB triblock copolymers prepared by PISA in water self-assemble into a transient network of bridged micelles. The slowdown of the exchange of B blocks between micelles during PISA is highlighted as well as the parameters affecting the polymerization.
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8

Wang, Wentao, Xuehui Wang, Feng Jiang y Zhigang Wang. "Synthesis, order-to-disorder transition, microphase morphology and mechanical properties of BAB triblock copolymer elastomers with hard middle block and soft outer blocks". Polymer Chemistry 9, n.º 22 (2018): 3067–79. http://dx.doi.org/10.1039/c8py00375k.

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9

Noro, A., M. Iinuma, J. Suzuki, A. Takano y Y. Matsushita. "Effect of Composition Distribution on Microphase-Separated Structure from BAB Triblock Copolymers". Macromolecules 37, n.º 10 (mayo de 2004): 3804–8. http://dx.doi.org/10.1021/ma035784q.

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10

Bouchet, Renaud, Sébastien Maria, Rachid Meziane, Abdelmaula Aboulaich, Livie Lienafa, Jean-Pierre Bonnet, Trang N. T. Phan et al. "Single-ion BAB triblock copolymers as highly efficient electrolytes for lithium-metal batteries". Nature Materials 12, n.º 5 (31 de marzo de 2013): 452–57. http://dx.doi.org/10.1038/nmat3602.

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11

Dai, Kevin H., Junichiro Washiyama y Edward J. Kramer. "Segregation Study of a BAB Triblock Copolymer at the A/B Homopolymer Interface". Macromolecules 27, n.º 16 (agosto de 1994): 4544–53. http://dx.doi.org/10.1021/ma00094a018.

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12

Bastakoti, Bishnu Prasad, Nischal Bhattarai, Moses D. Ashie, Felix Tettey, Shin-ichi Yusa y Kenichi Nakashima. "Single-Micelle-Templated Synthesis of Hollow Barium Carbonate Nanoparticle for Drug Delivery". Polymers 15, n.º 7 (31 de marzo de 2023): 1739. http://dx.doi.org/10.3390/polym15071739.

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A laboratory-synthesized triblock copolymer poly(ethylene oxide-b-acrylic acid-b-styrene) (PEG-PAA-PS) was used as a template to synthesize hollow BaCO3 nanoparticles (BC-NPs). The triblock copolymer was synthesized using reversible addition–fragmentation chain transfer radical polymerization. The triblock copolymer has a molecular weight of 1.88 × 104 g/mol. Transmission electron microscopy measurements confirm the formation of spherical micelles with a PEG corona, PAA shell, and PS core in an aqueous solution. Furthermore, the dynamic light scattering experiment revealed the electrostatic interaction of Ba2+ ions with an anionic poly(acrylic acid) block of the micelles. The controlled precipitation of BaCO3 around spherical polymeric micelles followed by calcination allows for the synthesis of hollow BC-NPs with cavity diameters of 15 nm and a shell thickness of 5 nm. The encapsulation and release of methotrexate from hollow BC-NPs at pH 7.4 was studied. The cell viability experiments indicate the possibility of BC-NPs maintaining biocompatibility for a prolonged time.
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13

Liu, Senyuan, Mohammad Sadegh Samie y Radhakrishna Sureshkumar. "Vesicle Morphogenesis in Amphiphilic Triblock Copolymer Solutions". Colloids and Interfaces 8, n.º 3 (6 de mayo de 2024): 29. http://dx.doi.org/10.3390/colloids8030029.

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Coarse-grained molecular dynamics simulations are employed to investigate the spatiotemporal evolution of vesicles (polymersomes) through the self-assembly of randomly distributed amphiphilic BAB triblock copolymers with hydrophilic A and hydrophobic B blocks in an aqueous solution. The vesiculation pathway consists of several intermediate structures, such as an interconnected network of copolymer aggregates, a cage of cylindrical micelles, and a lamellar cage. The cage-to-vesicle transition occurs at a constant aggregation number and practically eliminates the hydrophobic interfacial area between the B block and solvent. Molecular reorganization underlying the sequence of morphology transitions from a cage-like aggregate to a vesicle is nearly isentropic. The end-to-end distances of isolated copolymer chains in solution and those within a vesicular assembly follow lognormal probability distributions. This can be attributed to the preponderance of folded chain configurations in which the two hydrophobic end groups of a given chain stay close to each other. However, the probability distribution of end-to-end distances is broader for chains within the vesicle as compared with that of a single chain. This is due to the swelling of the folded configurations within the hydrophobic bilayer. Increasing the hydrophobicity of the B block reduces the vesiculation time without qualitatively altering the self-assembly pathway.
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14

Balsara, N. P., M. Tirrell y T. P. Lodge. "Micelle formation of BAB triblock copolymers in solvents that preferentially dissolve the A block". Macromolecules 24, n.º 8 (abril de 1991): 1975–86. http://dx.doi.org/10.1021/ma00008a040.

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15

Davidson, Michael L., Liat Laufer, Moshe Gottlieb y Lynn M. Walker. "Transport of Flexible, Oil-Soluble Diblock and BAB Triblock Copolymers to Oil/Water Interfaces". Langmuir 36, n.º 26 (2 de junio de 2020): 7227–35. http://dx.doi.org/10.1021/acs.langmuir.0c00477.

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16

Kirkland, Stacey E., Ryan M. Hensarling, Shawn D. McConaughy, Yanlin Guo, William L. Jarrett y Charles L. McCormick. "Thermoreversible Hydrogels from RAFT-Synthesized BAB Triblock Copolymers: Steps toward Biomimetic Matrices for Tissue Regeneration†". Biomacromolecules 9, n.º 2 (febrero de 2008): 481–86. http://dx.doi.org/10.1021/bm700968t.

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17

Vass, Szabolcs, Jan Skov Pedersen, Markus Klapper y Eszter Rétfalvi. "On the conformation of the hydrophilic (B) chains in ABA and BAB type triblock copolymers". Physica B: Condensed Matter 385-386 (noviembre de 2006): 759–61. http://dx.doi.org/10.1016/j.physb.2006.06.056.

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18

Dai, Fengying, Lei Tang, Jianhai Yang, Xiaoli Zhao, Wenguang Liu, Guang Chen, Fushun Xiao y Xuequan Feng. "Fast thermoresponsive BAB-type HEMA/NIPAAm triblock copolymer solutions for embolization of abnormal blood vessels". Journal of Materials Science: Materials in Medicine 20, n.º 4 (20 de noviembre de 2008): 967–74. http://dx.doi.org/10.1007/s10856-008-3632-x.

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19

Shao, Zhecheng, Hannes Nederstedt y Patric Jannasch. "Styrenic BAB Triblock Copolymers Functionalized with Lithium (N-Tetrafluorophenyl)trifluoromethanesulfonamide as Solid Single-Ion Conducting Electrolytes". ACS Applied Energy Materials 4, n.º 3 (24 de febrero de 2021): 2570–77. http://dx.doi.org/10.1021/acsaem.0c03141.

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20

Yang, Zigang, Jianjun Yuan y Shiyuan Cheng. "Self-assembling of biocompatible BAB amphiphilic triblock copolymers PLL(Z)–PEG–PLL(Z) in aqueous medium". European Polymer Journal 41, n.º 2 (febrero de 2005): 267–74. http://dx.doi.org/10.1016/j.eurpolymj.2004.09.023.

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21

Skrabania, Katja, Wen Li y André Laschewsky. "Synthesis of Double-Hydrophilic BAB Triblock Copolymers via RAFT Polymerisation and their Thermoresponsive Self-Assembly in Water". Macromolecular Chemistry and Physics 209, n.º 13 (21 de mayo de 2008): 1389–403. http://dx.doi.org/10.1002/macp.200800108.

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22

Kim, Seung Hyun y Won Ho Jo. "A Monte Carlo Simulation for the Micellization of ABA- and BAB-Type Triblock Copolymers in a Selective Solvent". Macromolecules 34, n.º 20 (septiembre de 2001): 7210–18. http://dx.doi.org/10.1021/ma0105136.

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23

Kamitakahara, Hiroshi y Fumiaki Nakatsubo. "ABA- and BAB-triblock cooligomers of tri-O-methylated and unmodified cello-oligosaccharides: syntheses and structure-solubility relationship". Cellulose 17, n.º 1 (8 de agosto de 2009): 173–86. http://dx.doi.org/10.1007/s10570-009-9348-3.

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24

Wang, Wentao, Juan Zhang, Feng Jiang, Xuehui Wang y Zhigang Wang. "Reprocessable Supramolecular Thermoplastic BAB-Type Triblock Copolymer Elastomers with Enhanced Tensile Strength and Toughness via Metal–Ligand Coordination". ACS Applied Polymer Materials 1, n.º 3 (25 de febrero de 2019): 571–83. http://dx.doi.org/10.1021/acsapm.8b00277.

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25

YUAN, JIAN-JUN, SHI-YUAN CHENG, LEI JIANG, LIN-XIAN FENG y ZHI-QIANG FAN. "NANOSTRUCTURED AGGREGATES FROM THE SELF-ASSEMBLY OF BAB TRIBLOCK COPOLYMERS WITH A HYDROPHILIC MIDDLE BLOCK A IN WATER". International Journal of Computational Engineering Science 04, n.º 03 (septiembre de 2003): 551–54. http://dx.doi.org/10.1142/s1465876303001733.

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26

Rodríguez-Hidalgo, María del Rosario, César Soto-Figueroa y Luis Vicente. "Study of structural morphologies of thermoresponsive diblock AB and triblock BAB copolymers (A = poly(N-isopropylacrylamide), B = polystyrene)". Chemical Physics Letters 695 (marzo de 2018): 170–75. http://dx.doi.org/10.1016/j.cplett.2018.02.016.

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27

Zhao, Xiaoli, Wenguang Liu, Dayong Chen, Xiaoze Lin y William W. Lu. "Effect of Block Order of ABA- and BAB-Type NIPAAm/HEMA Triblock Copolymers on Thermoresponsive Behavior of Solutions". Macromolecular Chemistry and Physics 208, n.º 16 (20 de agosto de 2007): 1773–81. http://dx.doi.org/10.1002/macp.200700155.

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28

McAlvin, John E. y Cassandra L. Fraser. "Metal-Centered Star Block Copolymers: Amphiphilic Iron Tris(bipyridine)-Centered Polyoxazolines and Their Chemical Fragmentation to Bipyridine-Centered BAB Triblock Copolymers". Macromolecules 32, n.º 5 (marzo de 1999): 1341–47. http://dx.doi.org/10.1021/ma981396q.

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29

HE, G., L. MA, J. PAN y S. VENKATRAMAN. "ABA and BAB type triblock copolymers of PEG and PLA: A comparative study of drug release properties and “stealth” particle characteristics". International Journal of Pharmaceutics 334, n.º 1-2 (4 de abril de 2007): 48–55. http://dx.doi.org/10.1016/j.ijpharm.2006.10.020.

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30

Li, Yue, Hu-Jun Qian, Zhong-Yuan Lu y An-Chang Shi. "Note: Effects of polydispersity on the phase behavior of AB diblock and BAB triblock copolymer melts: A dissipative particle dynamics simulation study". Journal of Chemical Physics 139, n.º 9 (7 de septiembre de 2013): 096101. http://dx.doi.org/10.1063/1.4820235.

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31

Zamani, Somayeh y Sepideh Khoee. "Preparation of core–shell chitosan/PCL-PEG triblock copolymer nanoparticles with ABA and BAB morphologies: Effect of intraparticle interactions on physicochemical properties". Polymer 53, n.º 25 (noviembre de 2012): 5723–36. http://dx.doi.org/10.1016/j.polymer.2012.09.051.

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32

Shan, Xiaoqian, Changsheng Liu, Yuan Yuan, Feng Xu, Xinyi Tao, Yan Sheng y Huanjun Zhou. "In vitro macrophage uptake and in vivo biodistribution of long-circulation nanoparticles with poly(ethylene-glycol)-modified PLA (BAB type) triblock copolymer". Colloids and Surfaces B: Biointerfaces 72, n.º 2 (septiembre de 2009): 303–11. http://dx.doi.org/10.1016/j.colsurfb.2009.04.017.

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33

Bloch, Emily, Trang Phan, Denis Bertin, Philip Llewellyn y Virginie Hornebecq. "Direct synthesis of mesoporous silica presenting large and tunable pores using BAB triblock copolymers: Influence of each copolymer block on the porous structure". Microporous and Mesoporous Materials 112, n.º 1-3 (julio de 2008): 612–20. http://dx.doi.org/10.1016/j.micromeso.2007.10.051.

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34

Zahoranová, Anna, Miroslav Mrlík, Katarína Tomanová, Juraj Kronek y Robert Luxenhofer. "ABA and BAB Triblock Copolymers Based on 2-Methyl-2-oxazoline and 2-n-Propyl-2-oxazoline: Synthesis and Thermoresponsive Behavior in Water". Macromolecular Chemistry and Physics 218, n.º 13 (18 de abril de 2017): 1700031. http://dx.doi.org/10.1002/macp.201700031.

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35

Kim, Seung Hyun y Won Ho Jo. "A Monte Carlo simulation for the micellization of ABA- and BAB-type triblock copolymers in a selective solvent. II. Effects of the block composition". Journal of Chemical Physics 117, n.º 18 (8 de noviembre de 2002): 8565–72. http://dx.doi.org/10.1063/1.1512646.

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36

Moehl, Gilles Ernest y Ralph Gilles. "Electrodeposited Lithiophilic Nanoparticles As Artificial Interphase for Anode-Free Lithium Ion Batteries". ECS Meeting Abstracts MA2023-02, n.º 57 (22 de diciembre de 2023): 2744. http://dx.doi.org/10.1149/ma2023-02572744mtgabs.

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The world is impatiently waiting for the lithium metal or even anode free batteries - to finally make a significant step forward from current battery technology. Safer and higher in energy and power density are the targeted improvements, and while the latter is met by the choice of lithium metal as anode (or more radically, no anode at all), the safety aspect is not as easily reached (1). The anode interphase was identified long ago as the critical element to this endeavour. Consequently, alternative electrolytes (polymer, ceramic) or additives as well as numerous kinds of protective coatings are being developed (2,3). Lithiophilic metal coatings could also do the job, and it has been shown that sputtered Au or Zn layers on Li metal could prevent dendritic growth in a cell (4). The concept of artificial SEI engineering can be expanded on by using lithiophilic nanoparticles as opposed to continuous coatings. Nanoparticle decorated current collectors or lithium metal anodes can be made by electrodeposition, where the experimental conditions allow for the tuning of particle number density, size and composition (5). A precise understanding of the intermetallic phases formed between lithium and a lithiophilic-metal nanoparticle should enable their optimised design for highest performance and durability. To do so, X-ray and neutron based techniques can be great tools to follow structure and morphology of the anode interphase and correlate those properties to the electrochemical parameters. In this work, we show an investigation of electrodeposited Au or Zn nanoparticles on a current collector. Multiple configurations regarding particle size and number density are explored. Small angle X-ray scattering, electron microscopy as well as X-ray diffraction are used to characterise the anode interphase in lithium half cells under variation of the degree of lithiation. References: (1) Winter, M.; Barnett, B.; Xu, K. Before Li Ion Batteries. Chem. Rev. 2018, 118 (23), 11433–11456. https://doi.org/10.1021/acs.chemrev.8b00422. (2) Huang, Z.; Choudhury, S.; Paul, N.; Thienenkamp, J. H.; Lennartz, P.; Gong, H.; Müller-Buschbaum, P.; Brunklaus, G.; Gilles, R.; Bao, Z. Effects of Polymer Coating Mechanics at Solid-Electrolyte Interphase for Stabilizing Lithium Metal Anodes. Advanced Energy Materials 2022, 12 (5), 2103187. https://doi.org/10.1002/aenm.202103187. (3)Bouchet, R., Maria, S., Meziane, R. et al. Single-ion BAB triblock copolymers as highly efficient electrolytes for lithium-metal batteries. Nature Mater 12, 452–457 (2013). https://doi.org/10.1038/nmat3602 (4) Sputter coating of lithium metal electrodes with lithiophilic metals for homogeneous and reversible lithium electrodeposition and electrodissolution - ScienceDirect. https://www.sciencedirect.com/science/article/pii/S1369702120301048 (5) Moehl, G. E.; Bartlett, P. N.; Hector, A. L. Using GISAXS to Detect Correlations between the Locations of Gold Particles Electrodeposited from Aqueous Solution. Langmuir 2020. https://doi.org/10.1021/acs.langmuir.9b03400.
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37

Ball, Lauren E., Gabriela Garbonova, Rueben Pfukwa y Bert Klumperman. "Synthesis of thermoresponsive PNIPAm-b-PVP-b-PNIPAm hydrogels via aqueous RAFT polymerization". Polymer Chemistry, 2023. http://dx.doi.org/10.1039/d3py00625e.

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Stimuli-responsive BAB type triblock copolymers of poly(N-isopropyl acrylamide) and poly(N-vinylpyrrolidone) i.e. PNIPAm-b-PVP-b-PNIPAm were readily synthesized via aqueous reversible addition-fragmentation chain transfer (RAFT) mediated polymerization using a difunctional xanthate RAFT agent,...
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38

Allushi, Andrit, Pegah Mansouri Bakvand, Haiyue Gong y Patric Jannasch. "Hydroxide conducting BAB triblock copolymers tailored for durable high-performance anion exchange membranes". Materials Advances, 2023. http://dx.doi.org/10.1039/d3ma00207a.

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Well-designed block copolymers with a controlled co-continuous microphase morphology can be applied as efficient anion exchange membranes (AEMs) for fuel cells and water electrolyzers. In the present work, we have...
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39

Matsen, M. W. "Comparison of A-block polydispersity effects on BAB triblock and AB diblock copolymer melts". European Physical Journal E 36, n.º 4 (abril de 2013). http://dx.doi.org/10.1140/epje/i2013-13044-9.

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40

"Lithium Metal Batteries Based On New Single-Ion Bab Triblock Copolymers As Solid Electrolytes". ECS Meeting Abstracts, 2013. http://dx.doi.org/10.1149/ma2013-02/6/529.

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41

ALTUNORDU KALAYCI, Özlem y Hülya ARSLAN. "Gümüş Nanoparçacık içeren mPEG-b-PCL ve PCL-b-PEG-b-PCL Blok Kopolimerlerinin Sentezi ve Karakterizasyonu". Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 27 de septiembre de 2022. http://dx.doi.org/10.29130/dubited.1124484.

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Bu çalışmada, AB tipi diblok (mPEG-b-PCL) ve BAB tipi triblok (PCL-b-PEG-b-PCL) kopolimerler sırasıyla makrobaşlatıcı olarak mPEG (monometoksi poli(etilen glikol)) ve PEG (poli etilen glikol) kullanılarak ve katalizör olarak kalay oktanoat (Sn(Oct)2) kullanılarak ε-kaprolakton (ε-CL)’nun halka açılması polimerizasyonu ile sentezlendi. Blok kopolimer içerisinde, gümüş nitrat (AgNO3) metal tuzlarının indirgenmesiyle gümüş nanoparçacıkları içeren Ag/PEG-b-PCL ve Ag/PCL-b-PEG-b-PCL kolloidal çözeltileri üretilmiştir. mPEG-b-PCL ve PCL-b-PEG-b-PCL blok kopolimerlerinin karakterizasyonu, GPC, FTIR ve 1HNMR teknikleri kullanılarak yapılmıştır. Hibrit yapı içerisindeki gümüş nanoparçacık formasyonu, yüzey plazmon rezonans (SPR) dalga boyu değişiminden ve floresans emisyon spektrumundan gözlenmiştir. İlaç taşıyıcı sistemlerde model ilaç olarak kullanılan metilen mavisinin, polimerde gümüş nanoparçacıkların varlığında, löko-metilene indirgenme hızı araştırılmıştır.
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42

Coudert, Noémie, Clément Debrie, Jutta Rieger, Taco Nicolai y Olivier Colombani. "Thermosensitive Hydrogels of BAB Triblock Copolymers Exhibiting Gradually Slower Exchange Dynamics and an Unexpected Critical Reorganization Temperature Upon Heating". Macromolecules, 1 de diciembre de 2022. http://dx.doi.org/10.1021/acs.macromol.2c01573.

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