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      Photoswitchable molecular rings for solar-thermal energy storage

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      Author
      Durgun, Engin
      Grossman J.C.
      Date
      2013
      Source Title
      Journal of Physical Chemistry Letters
      Print ISSN
      19487185
      Volume
      4
      Issue
      6
      Pages
      854 - 860
      Language
      English
      Type
      Article
      Item Usage Stats
      112
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      121
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      Abstract
      Solar-thermal fuels reversibly store solar energy in the chemical bonds of molecules by photoconversion, and can release this stored energy in the form of heat upon activation. Many conventional photoswichable molecules could be considered as solar thermal fuels, although they suffer from low energy density or short lifetime in the photoinduced high-energy metastable state, rendering their practical use unfeasible. We present a new approach to the design of chemistries for solar thermal fuel applications, wherein well-known photoswitchable molecules are connected by different linker agents to form molecular rings. This approach allows for a significant increase in both the amount of stored energy per molecule and the stability of the fuels. Our results suggest a range of possibilities for tuning the energy density and thermal stability as a function of the type of the photoswitchable molecule, the ring size, or the type of linkers. © 2013 American Chemical Society.
      Keywords
      azobenzene
      density functional theory
      photoswitch
      renewable energy
      solar thermal fuel
      Meta-stable state
      Molecular rings
      New approaches
      Photo-switchable
      Photoconversion
      Photoswitch
      Renewable energies
      Solar thermal
      Azobenzene
      Chemical bonds
      Density functional theory
      Fuels
      Heat storage
      Molecular spectroscopy
      Molecules
      Solar heating
      Solar energy
      Permalink
      http://hdl.handle.net/11693/21029
      Published Version (Please cite this version)
      http://dx.doi.org/10.1021/jz301877n
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      • Institute of Materials Science and Nanotechnology (UNAM) 1775
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