High Energy Density in Azobenzene-based Materials for Photo-Thermal Batteries via Controlled Polymer Architecture and Polymer-Solvent Interactions

Title

High Energy Density in Azobenzene-based Materials for Photo-Thermal Batteries via Controlled Polymer Architecture and Polymer-Solvent Interactions

Subject

SOLAR THERMAL FUELS; SELF-ASSEMBLED MONOLAYERS; METHYL-METHACRYLATE; SUBSTITUTED AZOBENZENES; RADICAL POLYMERIZATION; STORAGE MATERIALS; MOLECULAR-WEIGHT; VISIBLE-LIGHT; ISOMERIZATION; PHOTOSWITCHES

Description

Energy densities of similar to 510 J/g (max: 698J/g) have been achieved in azobenzene-based syndiotactic-rich poly(methacrylate) polymers. The processing solvent and polymer-solvent interactions are important to achieve morphologically optimal structures for high-energy density materials. This work shows that morphological changes of solid-state syndiotactic polymers, driven by different solvent processings play an important role in controlling the activation energy of Z-E isomerization as well as the shape of the DSC exotherm. Thus, this study shows the crucial role of processing solvents and thin film structure in achieving higher energy densities.

Source

Sci. Rep. 2017, 7,17773 [Link]

Publisher

NATURE PUBLISHING GROUP, MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND

Date

2017

Contributor

Jeong, S. P.; Renna, L. A.; Boyle, C. J.; Kwak, H. S.; Harder, E.; Damm, W.; Venkataraman, D.,

Type

Article