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Award ID contains: 2142887

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  1. ; ; ; ; ; (, Communications Materials)
    Abstract Conventional topochemical photopolymerization reactions occur exclusively in precisely-engineered photoactive crystalline states, which often produces high-insoluble polymers. To mitigate this, here, we report the mechanoactivation of photostable styryldipyrylium-based monomers, which results in their amorphization-enabled solid-state photopolymerization and produces soluble and processable amorphous polymers. A combination of solid-state nuclear magnetic resonance, X-ray diffraction, and absorption/fluorescence spectroscopy reveals the crucial role of a mechanically-disordered monomer phase in yielding polymers via photo-induced [2 + 2] cycloaddition reaction. Hence, mechanoactivation and amorphization can expand the scope of topochemical polymerization conditions to open up opportunities for generating polymers that are otherwise difficult to synthesize and analyze. 
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  2. ; ; ; ; ; ; (, Angewandte Chemie International Edition)
    Abstract We address a critical challenge of recovering and recycling homogeneous organocatalysts by designing photoswitchable catalyst structures that display a reversible solubility change in response to light. Initially insoluble catalysts are UV‐switched to a soluble isomeric state, which catalyzes the reaction, then back‐isomerizes to the insoluble state upon completion of the reaction to be filtered and recycled. The molecular design principles that allow for the drastic solubility change over 10 times between the isomeric states, 87 % recovery by the light‐induced precipitation, and multiple rounds of catalyst recycling are revealed. This proof of concept will open up opportunities to develop highly recyclable homogeneous catalysts that are important for the synthesis of critical compounds in various industries, which is anticipated to significantly reduce environmental impact and costs. 
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  3. ; ; (, The Journal of Physical Chemistry C)
    Free, publicly-accessible full text available December 12, 2025
  4. ; ; ; ; (, Chemical Science)
    Photo-cycloadduct diazetidines exhibit high energy storage densities exceeding 0.3 MJ kg−1, offering long-term energy storage for up to 23 years and rapid solvent-assisted energy release. 
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    Free, publicly-accessible full text available November 20, 2025
  5. ; ; ; ; ; ; ; ; ; ; et al (, Chem)
    Free, publicly-accessible full text available November 1, 2025
  6. ; ; (, Chemical Science)
    Building on recent advancements, this perspective article examines key design principles that facilitate the use of reversible solid-state cycloaddition reactions for molecular solar thermal energy storage applications. 
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    Full Text Available 
  7. ; ; ; ; ; ; ; ; (, Journal of Materials Chemistry A)
    A mechanistic investigation of molecular solar thermal energy release by solid-state cycloreversion of dianthracenes to anthracenes reveals the integral roles of chemical and physical transformations of molecules towards the total energy release. 
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    Full Text Available 
  8. ; ; ; ; ; ; ; ; ; ; et al (, Journal of the American Chemical Society)
    Full Text Available 
  9. ; ; ; ; (, Chem)
    Full Text Available 
  10. ; ; ; ; ; (, Chemical Science)
    Visible-light-absorbing photoswitches based on the Azo-BF2scaffold show reversible isomerization in the solid state, storing photon energy and releasing thermal energy on demand. 
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    Full Text Available