Exploration of a Living Anionic Polymerization Mechanism into Polymerization-Induced Self-Assembly and Site-Specific Stabilization of the Formed Nano-Objects

2020 ◽  
Vol 53 (8) ◽  
pp. 3157-3165 ◽  
Author(s):  
Jian Wang ◽  
Mengya Cao ◽  
Peng Zhou ◽  
Guowei Wang
Keyword(s):  
Anionic Polymerization ◽  
Self Assembly ◽  
Living Anionic Polymerization ◽  
Site Specific ◽  
Polymerization Mechanism

A polymerization-induced self-assembly process for all-styrenic nano-objects using the living anionic polymerization mechanism

2020 ◽  
Vol 11 (15) ◽  
pp. 2635-2639 ◽  
Author(s):  
Chengcheng Zhou ◽  
Jian Wang ◽  
Peng Zhou ◽  
Guowei Wang
Keyword(s):  
Diblock Copolymer ◽  
Anionic Polymerization ◽  
Self Assembly ◽  
Assembly Process ◽  
Living Anionic Polymerization ◽  
Polymerization Mechanism ◽  
Copolymer Poly

By combination of the living anionic polymerization (LAP) mechanism with the polymerization-induced self-assembly (PISA) technique, the all-styrenic diblock copolymer poly(p-tert-butylstyrene)-b-polystyrene (PtBS-b-PS) based LAP PISA was successfully developed.

Hairy Particles Synthesized by Living Anionic Polymerization-Induced Self-Assembly and Evaluation of Their Nanostructure

2021 ◽  
Author(s):  
Toshiki Terao ◽  
Hibiki Shiraishi ◽  
Mikito Yamazaki ◽  
Teruaki Hayakawa ◽  
Noboru Ohta ◽  
...  
Keyword(s):  
Anionic Polymerization ◽  
Self Assembly ◽  
Living Anionic Polymerization

Controlled Synthesis and Ceramization of Well-Defined Fe/Si/C Ceramic Precursors by Living Anionic Polymerization

2016 ◽  
Vol 852 ◽  
pp. 579-584
Author(s):  
Qian Ce Zhang ◽  
Yan Zi Gou ◽  
Yi Fei Wang ◽  
Teng Fei Mao ◽  
Nan Wu ◽  
...  
Keyword(s):  
Anionic Polymerization ◽  
Self Assembly ◽  
Controlled Synthesis ◽  
Living Anionic Polymerization ◽  
Elemental Compositions ◽  
Molecular Weights ◽  
Ceramic Precursors ◽  
Ft Ir ◽  
Weight Structure ◽  
Controllable Preparation

Two kinds of iron-containing ceramic precursors, PFS and PS-b-PFS, were synthesized via living anionic polymerization by using ferrocenyldimethylsilane and styrene as the monomers. The structures, elemental compositions and molecular weights were characterized by FT-IR, NMR, EDS and GPC, respectively. The homopolymerization of ferrocenyldimethylsilane was simulated using computational chemistry method. The copolymerization between ferrocenyldimethylsilane and styrene was investigated by altering the ratio between monomers and initiator (n-butyllithium). The experimental results indicated that the Mn, Mw and PDi of homopolymer PFS were 6.91×103 g/mol, 8.29×103 g/mol and 1.20, respectively. Moreover, the molecular weight, structure and composition of block copolymers PS-b-PFS, were successfully controlled by changing the ratio of styrene, n-butyllithium and ferrocenyldimethylsilane. Subsequently, using such iron-containing polymers as precursors, Fe/Si/C ceramics were obtained after sintering at 1400°C. The microstructures, morphologies and elemental compositions of ceramics were characterized by SEM and EDS. The results implied the controllable preparation of spherical Fe/Si/C ceramics was achieved via the self-assembly of precursors.

Reactive Nanopattern in a Triple Structured Bio-Inspired Honeycomb Film as a Clickable Platform

2018 ◽  
Author(s):  
Pierre Marcasuzaa ◽  
Samuel Pearson ◽  
Karell Bosson ◽  
Laurence Pessoni ◽  
Jean-Charles Dupin ◽  
...  
Keyword(s):  
Self Assembly ◽  
Double Porosity ◽  
Surface Groups ◽  
Specific Chemical ◽  
Site Specific ◽  
Surface Functionality ◽  
Wenzel State ◽  
Breath Figure ◽  
Responsive Surfaces ◽  
Secondary Population

A hierarchically structured platform was obtained from spontaneous self-assembly of a poly(styrene)-<i>b</i>-poly(vinylbenzylchloride) (PS-<i>b</i>-PVBC) block copolymer (BCP) during breath figure (BF) templating. The BF process using a water/ethanol atmosphere gave a unique double porosity in which hexagonally arranged micron-sized pores were encircled by a secondary population of smaller, nano-sized pores. A third level of structuration was simultaneously introduced between the pores by directed BCP self-assembly to form out-of-the-plane nano-cylinders, offering very rapid bottom-up access to a film with unprecedented triple structure which could be used as a reactive platform for introducing further surface functionality. The surface nano-domains of VBC were exploited as reactive nano-patterns for site-specific chemical functionalization by firstly substituting the exposed chlorine moiety with azide, then “clicking” an alkyne by copper (I) catalyzed azide-alkyne Huisgen cycloaddition (CuAAC). Successful chemical modification was verified by NMR spectroscopy, FTIR spectroscopy, and XPS, with retention of the micro- and nanostructuration confirmed by SEM and AFM respectively. Protonation of the cyclotriazole surface groups triggered a switch in macroscopic behavior from a Cassie-Baxter state to a Wenzel state, highlighting the possibility of producing responsive surfaces with hierarchical structure.

Living Anionic Polymerization of 4-Halostyrenes

2021 ◽  
Vol 54 (3) ◽  
pp. 1489-1498
Author(s):  
Raita Goseki ◽  
Taro Koizumi ◽  
Reina Kurakake ◽  
Satoshi Uchida ◽  
Takashi Ishizone
Keyword(s):  
Anionic Polymerization ◽  
Living Anionic Polymerization

scholarly journals Polymerisation-induced self-assembly (PISA) as a straightforward formulation strategy for stimuli-responsive drug delivery systems and biomaterials: recent advances

2021 ◽  
Vol 9 (1) ◽  
pp. 38-50
Author(s):  
Hien Phan ◽  
Vincenzo Taresco ◽  
Jacques Penelle ◽  
Benoit Couturaud
Keyword(s):  
Drug Delivery ◽  
Block Copolymers ◽  
Drug Release ◽  
Self Assembly ◽  
Drug Delivery Systems ◽  
Amphiphilic Block Copolymers ◽  
Stimuli Responsive ◽  
Site Specific ◽  
On Demand ◽  
Redox Agents

Stimuli-responsive amphiphilic block copolymers obtained by PISA have emerged as promising nanocarriers for enhancing site-specific and on-demand drug release in response to a range of stimuli such as pH, redox agents, light or temperature.

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