scholarly journals “One-pot” aminolysis/thia-Michael addition preparation of well-defined amphiphilic PVDF-b-PEG-b-PVDF triblock copolymers: self-assembly behaviour in mixed solvents

2020 ◽  
Vol 11 (2) ◽  
pp. 401-410 ◽  
Author(s):  
Enrique Folgado ◽  
Marc Guerre ◽  
Antonio Da Costa ◽  
Anthony Ferri ◽  
Ahmed Addad ◽  
...  

Novel amphiphilic PVDF-based triblock copolymer (PVDF50-b-PEG136-b-PVDF50) is synthesized using RAFT polymerization and a one-pot thia-Michael addition. Self-assembly of this ABA copolymer resulted in formation of original crystalline structures.


2019 ◽  
Vol 10 (19) ◽  
pp. 2424-2435 ◽  
Author(s):  
Bingjie Zhao ◽  
Sen Xu ◽  
Sixun Zheng

A novel organic–inorganic ABA triblock copolymer with a poly(acrylate amide) (PAA) midblock and poly(POSS acrylate) [P(POSS)] endblocks was synthesized via sequential reversible addition–fragmentation chain transfer (RAFT) polymerization.



2018 ◽  
Vol 9 (13) ◽  
pp. 1593-1602 ◽  
Author(s):  
Fabian H. Sobotta ◽  
Franziska Hausig ◽  
Dominic O. Harz ◽  
Stephanie Hoeppener ◽  
Ulrich S. Schubert ◽  
...  

Combining a sequential, one-pot RAFT polymerization with the polymerization-induced self-assembly process results in a versatile oxidation-responsive carrier system.



Biomolecules ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 352 ◽  
Author(s):  
Isadora Berlanga

Giant vesicles with several-micrometer diameters were prepared by the self-assembly of an amphiphilic block copolymer in the presence of the Belousov–Zhabotinsky (BZ) reaction. The vesicle is composed of a non-uniform triblock copolymer synthesized by multi-step reactions in the presence of air at room temperature. The triblock copolymer contains poly(glycerol monomethacrylate) (PGMA) as the hydrophilic block copolymerized with tris(2,2′-bipyridyl)ruthenium(II) (Ru(bpy)3), which catalyzes the BZ reaction, and 2-hydroxypropyl methacrylate (HPMA) as the hydrophobic block. In this new approach, the radicals generated in the BZ reaction can activate a reversible addition-fragmentation chain transfer (RAFT) polymerization to self-assemble the polymer into vesicles with diameters of approximately 3 µm. X-ray photoelectron spectroscopy (XPS) measurements demonstrated that the PGMA-b-Ru(bpy)3-b-PHPMA triblock copolymer is brominated and increases the osmotic pressure inside the vesicle, leading to micrometer-sized features. The effect of solvent on the morphological transitions are also discussed briefly. This BZ strategy, offers a new perspective to prepare giant vesicles as a platform for promising applications in the areas of microencapsulation and catalyst support, due to their significant sizes and large microcavities.



RSC Advances ◽  
2015 ◽  
Vol 5 (94) ◽  
pp. 77388-77398 ◽  
Author(s):  
Chun Feng ◽  
Wenqiang Yao ◽  
Guolin Lu ◽  
Yongjun Li ◽  
Xiaoyu Huang

A novel perfluorocyclobutyl aryl ether-based amphiphilic ABA triblock copolymers were synthesized via the site transformation strategy using sequential thermal [2π + 2π] step-growth cycloaddition polymerization and ATRP.



2020 ◽  
Vol 53 (24) ◽  
pp. 11040-11050
Author(s):  
Davy Daubian ◽  
Alexandra Fillion ◽  
Jens Gaitzsch ◽  
Wolfgang Meier


2005 ◽  
Vol 19 (15n17) ◽  
pp. 2792-2797
Author(s):  
ZHONG-TAO SHI ◽  
MIN HAN ◽  
SHI-FENG ZHAO ◽  
LU ZHANG ◽  
XUE-FEI LI ◽  
...  

Poly (styrene-b-butadiene-b-styrene) (SBS) triblock copolymer templates have been prepared by solvent-induced order-disorder phase transition method. Silver nanoclusters have been deposited onto the SBS copolymer templates by low energy clusters beam deposition (LECBD) method. The microstructures of the template and cluster deposits have been characterized by AFM with tapping-mode. It is shown that the triblock copolymers are self-assembled to form an in-plane cylinder ordered microstructure. In the case of low coverage (<50%), silver nanaoclusters deposited on the template tend to aggregate along with the pattern of the template and coalesce into larger nanoparticles. Optical absorption spectra reveal that the surface plasmon resonance (SPR) of silver nanoclusters deposited on the template occurs at 545nm, being a red shift of ~75nm compared to that silver nanoclusters deposited on the fused quartz substrate.



2015 ◽  
Vol 54 (8) ◽  
pp. 1109-1118 ◽  
Author(s):  
Chih-Yu Kuo ◽  
Trong-Ming Don ◽  
Shih-Chi Hsu ◽  
Chia-Fen Lee ◽  
Wen-Yen Chiu ◽  
...  


2016 ◽  
Vol 37 (21) ◽  
pp. 1735-1741 ◽  
Author(s):  
Xiao-Yun Zhang ◽  
Dong-Ming Liu ◽  
Xin-Hu Lv ◽  
Miao Sun ◽  
Xiao-Li Sun ◽  
...  


2014 ◽  
Vol 50 (65) ◽  
pp. 9145-9148 ◽  
Author(s):  
Keren Zhang ◽  
Gregory B. Fahs ◽  
Motohiro Aiba ◽  
Robert B. Moore ◽  
Timothy E. Long

RAFT polymerization afforded acrylic ABC triblock copolymers with self-complementary nucleobase-functionalized external blocks and a low-Tg soft central block.



2010 ◽  
Vol 663-665 ◽  
pp. 880-882
Author(s):  
Xin De Tang ◽  
Jing Xu

The behavior of amphiphilic block copolymers in solution has attracted considerable attention in recent years. In this paper, the self-assembly behaviors of the amphiphilic fluorinated ABC-type triblock copolymer (MeOPEO16-PSt220-PFHEA22) in different mixed solutions were studied. Also, the effect of ionic concentration on the self-assembly aggregates of the copolymer in toluene-ethanol-water was studied.



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