scholarly journals Novel Amphiphilic Polyfluorene-Graft-(Polymethacrylic Acid) Brushes: Synthesis, Conformation, and Self-Assembly

Polymers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 4429
Author(s):  
Maria Simonova ◽  
Dmitry Ilgach ◽  
Ksenia Kaskevich ◽  
Maria Nepomnyashaya ◽  
Larisa Litvinova ◽  
...  
Keyword(s):  
Luminescence Intensity ◽  
Self Assembly ◽  
Polymer Brushes ◽  
Polymer Brush ◽  
Butyl Methacrylate ◽  
Quantum Yields ◽  
Side Chains ◽  
Polymethacrylic Acid ◽  
Tert Butyl ◽  
Molecular Weights

Novel polyfluorene polymer brushes with polymethacrylic acid side chains were obtained by atom transfer radical polymerization (ATRP) and activator generated by electron transfer (AGET) ATRP of tert-butyl methacrylate on polyfluorene multifunctional macroinitiator, followed by protonolysis of the tert-butyl groups of the side chains. Kinetics of polymerization and molecular weights were fully characterized. These polymer brushes luminesce in the blue region of the spectrum with high quantum yields (0.64–0.77). It was shown that the luminescence intensity of polymer brushes is higher than the luminescence intensity of the macroinitiator (0.61). Moreover, due to their amphiphilic nature, they can form unimolecular micelles when an alcohol solution of the polymer brush is injected into water. These properties can potentially be used in drug delivery and bioimaging.

Silkworm cocoons by cylinders self-assembled from H-shaped alternating polymer brushes

2015 ◽  
Vol 6 (6) ◽  
pp. 886-890 ◽  
Author(s):  
Qiutong Huang ◽  
Bo Yang ◽  
Huanhuan Liu ◽  
Youliang Zhao ◽  
Jianzhong Du
Keyword(s):  
Self Assembly ◽  
Polymer Brushes ◽  
Polymer Brush ◽  
Side Chains ◽  
Self Assembled ◽  
Silkworm Cocoon

We report a novel silkworm cocoon-like nanostructure based on the 3D hierarchical self-assembly of cylinders which are spontaneously formed by an H-shaped polymer brush comprising a disulfide-bridged spacer and two brushes with alternating PEG and PCL side chains. Crystalline of PCL between adjacent cylinders bridges cylinders.

Gas-Generating Polymer Particles: Reducing the Decomposition Temperature of Poly(tert-Butyl Methacrylate) Side Chains Using an Encapsulated Acid Catalyst Approach

2020 ◽  
Vol 2 (11) ◽  
pp. 5179-5187
Author(s):  
Ibrahim Eryazici ◽  
Matthew C. D. Carter ◽  
Wesley Sattler ◽  
Jian Yang ◽  
Scott Wills ◽  
...  
Keyword(s):  
Acid Catalyst ◽  
Decomposition Temperature ◽  
Butyl Methacrylate ◽  
Side Chains ◽  
Polymer Particles ◽  
Tert Butyl

Polymer Brush/Metal Nanoparticle Hybrids for Optical Sensor Applications: from Self-Assembly to Tailored Functions and Nanoengineering

2015 ◽  
Vol 229 (7-8) ◽  
Author(s):  
Stephanie Christau ◽  
Jan Genzer ◽  
Regine von Klitzing
Keyword(s):  
Optical Sensors ◽  
Self Assembly ◽  
Polymer Brushes ◽  
Mutual Influence ◽  
Polymer Brush ◽  
Review Article ◽  
Metal Nanoparticle ◽  
Stimuli Responsive ◽  
Sensor Applications ◽  
Stimuli Responsive Polymer

AbstractThis review article summarizes the progress of research in the field of polymer brush/metal nanoparticle hybrid materials. We will discuss the mutual influence of polymer brush matrix and particles. Self-assembly of particles within polymer brushes, and ways to control the loading and location of nanoparticles inside polymer brushes will be described, as well as the possibility to use the brush templates as nanoreactors to generate metal nanoparticles. The combination of stimuli-responsive polymer brushes and nanoparticles exhibiting surface plasmon resonance, such as gold or silver, enables the design of optical sensors based on reversible variations of the brush conformation. Sensing devices are capable of detecting a variety of extrinsic variations in their surrounding enviroments. The progress in the development of such optical sensors using brush/particle hybrids will be discussed in more detail.

Poly(tert-butyl methacrylate-b-styrene-b-4-vinylpyridine) Triblock Copolymers: Synthesis, Interactions, and Self-Assembly

2008 ◽  
Vol 41 (17) ◽  
pp. 6393-6399 ◽  
Author(s):  
Gerrit Gobius du Sart ◽  
Rachmawati Rachmawati ◽  
Vincent Voet ◽  
Gert Alberda van Ekenstein ◽  
Evgeny Polushkin ◽  
...  
Keyword(s):  
Self Assembly ◽  
Triblock Copolymers ◽  
Butyl Methacrylate ◽  
Tert Butyl

Self-assembly of chiral oligo(methylene-p-phenylene-ethynylene)s into vesicle-like particles independent of hydrophobicity/hydrophilicity of side chains and solvents

Soft Matter ◽  
2021 ◽  
Author(s):  
Zhiqiang Zhao ◽  
Zheng Bian ◽  
Yu Chen ◽  
Chuanqing Kang ◽  
Lianxun Gao ◽  
...  
Keyword(s):  
Self Assembly ◽  
Molecular Design ◽  
The Self ◽  
Side Chains ◽  
Phenylene Ethynylene

Chiral oligo(methylene-p-phenyleneethynylene)s can form vesicular assemblies no matter whether side chains and solvents are hydrophilic or hydrophobic. The self-assembly processes are highly independent of molecular design and chemical environments.

scholarly journals Self-assembly induced luminescence of Eu3+-complexes and application in bioimaging

2021 ◽  
Author(s):  
Ping-Ru Su ◽  
Tao Wang ◽  
Pan-Pan Zhou ◽  
Xiao-Xi Yang ◽  
Xiao-Xia Feng ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Rare Earth ◽  
Luminescence Intensity ◽  
Self Assembly ◽  
Room Temperature ◽  
Molecular Motion ◽  
Proof Of Concept ◽  
Room Temperature Phosphorescence ◽  
New Strategy ◽  
Size Controlled

Abstract Design and engineering of highly efficient emitting materials with assembly-induced luminescence, such as room temperature phosphorescence (RTP) and aggregation-induced emission (AIE), have stimulated extensive efforts. Here, we propose a new strategy to obtain size-controlled Eu3+-complex nanoparticles (Eu-NPs) with self-assembly induced luminescence (SAIL) characteristics without encapsulation or hybridization. Compared with previous RTP or AIE materials, the SAIL phenomena of increased luminescence intensity and lifetime in aqueous solution for the proposed Eu-NPs are due to the combined effect of self-assembly in confining the molecular motion and shielding the water quenching. As a proof of concept, we also show that this system can be further applied in bioimaging, temperature measurement and HClO sensing. The SAIL activity of the rare-earth (RE) system proposed here offers a further step forward on the roadmap for the development of RE light conversion systems and their integration in bioimaging and therapy applications.

Self-assembly of the polymer brush-grafted silica colloidal array for recognition of proteins

2017 ◽  
Vol 409 (22) ◽  
pp. 5319-5326 ◽  
Author(s):  
Wei Chen ◽  
Kenneth J. Shea ◽  
Min Xue ◽  
Lili Qiu ◽  
Yunhe Lan ◽  
...  
Keyword(s):  
Self Assembly ◽  
Polymer Brush
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