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

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.

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