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Electroactive Polymer Nanoparticles Exhibiting Photothermal Properties

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Published on: January 8, 2016

Switchable Electrostatically Templated Polymerization.

Chendan Li^1,2, Jose R Magana^2,3, Fabian Sobotta²

¹State Key Laboratory of Chemical Engineering and Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.

Angewandte Chemie (International Ed. in English)

|June 29, 2022

Summary

This summary is machine-generated.

Researchers developed a switchable polymerization system using dendritic polyamidoamine templates. Polymerization rate and conversion are controlled by pH and ionic strength, enabling on-demand control of polymer synthesis.

Keywords:

Complex Core Coacervate Micelles PIESA Polyelectrolytes RAFT Polymerization Templated Polymerizations

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Reductive Electropolymerization of a Vinyl-containing Poly-pyridyl Complex on Glassy Carbon and Fluorine-doped Tin Oxide Electrodes

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Area of Science:

Polymer Chemistry
Supramolecular Chemistry
Materials Science

Background:

Templated polymerization offers control over polymer architecture and properties.
Dendrimers are highly branched macromolecules with tunable properties.
Controlling polymerization via external stimuli is crucial for advanced materials.

Purpose of the Study:

To develop a switchable, templated polymerization system.
To investigate the influence of pH and ionic strength on templated polymerization.
To demonstrate on-demand control over polymerization rate and monomer conversion.

Main Methods:

Utilized dendritic polyamidoamine as a pH-responsive template.
Employed sodium styrene sulfonate as the oppositely charged monomer.
Modulated polymerization by adjusting solution pH and ionic strength.

Main Results:

Demonstrated that template charge density, dependent on pH, dictates polymerization rate and conversion.
Showcased the ability to switch polymerization "ON" and "OFF" by altering pH.
Established a direct correlation between environmental pH and polymerization outcomes.

Conclusions:

Developed a novel switchable, templated polymerization system responsive to pH and ionic strength.
Introduced a concept of harnessing co-assembly for controlled polymerization and self-assembly.
Opened avenues for creating and controlling coupled polymerization and self-assembly pathways.