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Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light
Published on: September 12, 2014
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Self-Activated Energy Release Cascade from Anthracene-Based Solid-State Molecular Solar Thermal Energy Storage
Subhayan Chakraborty1, Han P Q Nguyen1, Junichi Usuba1
1Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453, USA.
Chem
|January 20, 2025
Summary
New solid-state molecular solar thermal energy storage compounds, donor-acceptor anthracenes, release significant heat upon triggering. These compounds offer a renewable solid-state fuel alternative, mimicking self-ignition for rapid energy release.
Area of Science:
- Materials Science
- Chemistry
- Energy Storage
Background:
- Molecular solar thermal energy storage (MSTE) is crucial for renewable energy solutions.
- Developing efficient and stable solid-state MSTE materials remains a challenge.
Purpose of the Study:
- To introduce novel donor-acceptor substituted anthracenes for solid-state molecular solar thermal energy storage.
- To investigate their energy storage capacity, release mechanisms, and potential as solid-state fuels.
Main Methods:
- Visible light-induced [4+4] cycloaddition reactions to form metastable dianthracene cycloadducts.
- Analysis of energy storage via cycloreversion of dianthracenes to anthracenes.
- Characterization of self-heating and cascading heat release phenomena in the solid state.
Main Results:
- Donor-acceptor anthracenes effectively store solar energy via [4+4] cycloaddition, forming dianthracenes.
- Triggered cycloreversion releases stored energy as heat (approx. 100 kJ/mol or 200 J/g).
- Compounds exhibit remarkable self-heating and rapid, complete energy release upon activation.
Conclusions:
- Donor-acceptor anthracenes are effective solid-state molecular solar thermal energy storage compounds.
- Their self-heating capability enables rapid energy discharge, positioning them as renewable solid-state fuels.
- This work opens new avenues for utilizing solar energy through advanced materials.
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