An Hg2+-selective chemosensor based on the self-assembly of a novel amphiphilic block copolymer bearing rhodamine 6G derivative moieties in purely aqueous media

2015 ◽  
Vol 7 (6) ◽  
pp. 2738-2746 ◽  
Author(s):  
Zhao Wang ◽  
Zhongkui Yang ◽  
Tao Gao ◽  
Jingwen He ◽  
Laijiang Gong ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Self Assembly ◽  
Rhodamine 6G ◽  
Raft Polymerization ◽  
Aqueous Media ◽  
The Self ◽  
Amphiphilic Block Copolymer ◽  
Fluorescent Chemosensor

An amphiphilic block copolymer-based colorimetric and fluorescent chemosensor for Hg2+was prepared, which was synthesized by sequential RAFT polymerization of NIPAM and R6GDM (a novel Hg2+-sensitive rhodamine monomer).

The Self-Assembly of an Amphiphilic Block Copolymer: A Dissipative Particle Dynamics Study

2005 ◽  
Vol 42 (3) ◽  
pp. 180-183 ◽  
Author(s):  
S. G. Schulz ◽  
U. Frieske ◽  
H. Kuhn ◽  
G. Schmid ◽  
F. Müller ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Self Assembly ◽  
Dissipative Particle Dynamics ◽  
Particle Dynamics ◽  
The Self ◽  
Amphiphilic Block Copolymer

scholarly journals Controlled nanogel and macrogel structures from self-assembly of a stimuli-responsive amphiphilic block copolymer

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 64791-64798 ◽  
Author(s):  
JianCheng Liu ◽  
Christina Uhlir ◽  
Parag K. Shah ◽  
Fang Sun ◽  
Jeffrey W. Stansbury
Keyword(s):  
Block Copolymer ◽  
Self Assembly ◽  
Raft Polymerization ◽  
Amphiphilic Block Copolymer ◽  
Stimuli Responsive

RAFT polymerization was utilized to prepare an amphiphilic block copolymer containing both hydrophilic and hydrophobic segments.

Synthesis of PMMA-b-PS Block Copolymer by Emulsion ATRP and its Self-Assembly Property

2013 ◽  
Vol 705 ◽  
pp. 115-119
Author(s):  
Bao Yong Tian ◽  
Er Jun Tang ◽  
Miao Yuan ◽  
Rui Xia Hao ◽  
Cun Man Li ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Block Copolymer ◽  
Self Assembly ◽  
Potential Application ◽  
Morphological Characteristic ◽  
Living Polymerization ◽  
The Self ◽  
Emulsion System ◽  
Copolymer Concentration ◽  
Ft Ir

The well-defined block copolymer PMMA-b-PS was prepared by two-step ATRP in emulsion system. GPC results indicate that Mn increased linearly with conversion and polydispersity remained relatively narrow. It presents the characteristics of living polymerization in emulsion system. FT-IR demonstrated that block copolymer PMMA-b-PS could be successfully synthesized by ATRP with macroinitiator PMMA-Cl in emulsion system. The morphological characteristic of the self-assembly depends on the block copolymer concentration and transforms between spheres and rodlike micelles. The property indicates a perfect potential application in drug delivery materials.

A novel colorimetric and fluorescent chemosensor for acetate ions in aqueous media based on a rhodamine 6G–phenylurea conjugate in the presence of Fe(iii) ions

2011 ◽  
Vol 47 (5) ◽  
pp. 1622-1624 ◽  
Author(s):  
Zhi-Qiang Hu ◽  
Xiao-Ming Wang ◽  
Yong-Cheng Feng ◽  
Lei Ding ◽  
Ming Li ◽  
...  
Keyword(s):  
Rhodamine 6G ◽  
Aqueous Media ◽  
Fluorescent Chemosensor

Block copolymer self-assembly assisted fabrication of laterally organized- and stacked- nanoarrays

2021 ◽  
Author(s):  
Vignesh Suresh ◽  
Ah Bian Chew ◽  
Christina Yuan Ling Tan ◽  
Hui Ru Tan
Keyword(s):  
Block Copolymer ◽  
Self Assembly ◽  
The Self ◽  
Functional Surfaces ◽  
Self Assembled ◽  
Block Copolymer Lithography ◽  
Unique Surface ◽  
Copolymer Lithography

Abstract Block copolymer (BCP) self-assembly processes are often seen as reliable techniques for advanced nanopatterning to achieve functional surfaces and create templates for nanofabrication. By taking advantage of the tunability in pitch, diameter and feature-to-feature separation of the self-assembled BCP features, complex, laterally organized- and stacked- multicomponent nanoarrays comprising of gold and polymer have been fabricated. The approaches not only demonstrate nanopatterning of up to two levels of hierarchy but also investigate how a variation in the feature-to-feature gap at the first hierarchy affects the self-assembly of polymer features at the second. Such BCP self-assembly enabled multicomponent nanoarray configurations are rarely achieved by other nanofabrication approaches and are particularly promising for pushing the boundaries of block copolymer lithography and in creating unique surface architectures and complex morphologies at the nanoscale.

Solvent Effects on the Synthesis of Polymeric Nanoparticles via Block Copolymer Self-Assembly Using Microporous Membranes

2020 ◽  
Vol 1000 ◽  
pp. 324-330
Author(s):  
Sri Agustina ◽  
Masayoshi Tokuda ◽  
Hideto Minami ◽  
Cyrille Boyer ◽  
Per B. Zetterlund
Keyword(s):  
Block Copolymer ◽  
Block Copolymers ◽  
Self Assembly ◽  
Polymeric Nanoparticles ◽  
Raft Polymerization ◽  
Membrane Emulsification ◽  
Membrane Pore ◽  
Novel Technique ◽  
Wide Range ◽  
Membrane Pore Size

The self-assembly of block copolymers has attracted attention for many decades because it can yield polymeric nanoobjects with a wide range of morphologies. Membrane emulsification is a fairly novel technique for preparation of various types of emulsions, which relies on the dispersed phase passing through a membrane in order to effect droplet formation. In this study, we have prepared polymeric nanoparticles of different morphologies using self-assembly of asymmetric block copolymers in connection with membrane emulsification. Shirasu Porous Glass (SPG) membranes has been employed as the membrane emulsification equipment, and poly (oligoethylene glycol acrylate)-block-poly (styrene) (POEGA-b-PSt) copolymers prepared via RAFT polymerization. It has been found that a number of different morphologies can be achieved using this novel technique, including spheres, rods, and vesicles. Interestingly, the results have shown that the morphology can be controlled not only by adjusting experimental parameters specific to the membrane emulsification step such as membrane pore size and pressure, but also by changing the nature of organic solvent. As such, this method provides a novel route to these interesting nanoobjects, with interesting prospects in terms of exercising morphology control without altering the nature of the block copolymer itself.

scholarly journals Self-assembly and hydrogel formation ability of Fmoc-dipeptides comprising α-methyl-L-phenylalanine

2020 ◽  
Vol 52 (8) ◽  
pp. 923-930 ◽  
Author(s):  
Hanae Arakawa ◽  
Kumi Takeda ◽  
Sayuri L. Higashi ◽  
Aya Shibata ◽  
Yoshiaki Kitamura ◽  
...  
Keyword(s):  
Self Assembly ◽  
Network Formation ◽  
Aqueous Media ◽  
Three Dimensional ◽  
The Self ◽  
Methyl Groups ◽  
Marked Influence ◽  
Hydrogel Network ◽  
Hydrogel Formation ◽  
Peptide Derivatives

AbstractVarious biofunctional hydrogel materials can be fabricated in aqueous media through the self-assembly of peptide derivatives, forming supramolecular nanostructures and their three-dimensional networks. In this study, we describe the self-assembly of new Fmoc-dipeptides comprising α-methyl-L-phenylalanine. We found that the position and number of methyl groups introduced onto the α carbons of the Fmoc-dipeptides by α-methyl-L-phenylalanine have a marked influence on the morphology of the supramolecular nanostructure as well as the hydrogel (network) formation ability.

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