| Autor: |
Sur A; Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States., Simmons JD; Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States., Ezazi AA; Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States., Korman KJ; Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States., Sarkar S; Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States., Iverson ET; Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States., Bloch ED; Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States., Powers DC; Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States. |
| Abstrakt: |
Synthetic porous materials continue to garner attention as platforms for solid-state chemistry and as designer heterogeneous catalysts. Applications in photochemistry and photocatalysis, however, are plagued by poor light harvesting efficiency due to light scattering resulting from sample microcrystallinity and poor optical penetration that arises from inner filter effects. Here we demonstrate the layer-by-layer growth of optically transparent, photochemically active thin films of porous salts. Films are grown by sequential deposition of cationic Zr-based porous coordination cages and anionic Mn porphyrins. Photolysis facilitates the efficient reduction of Mn(III) sites to Mn(II) sites, which can be observed in real-time by transmission UV-vis spectroscopy. Film porosity enables substrate access to the Mn(II) sites and facilitates reversible O 2 activation in the solid state. These results establish optically transparent, porous salt thin films as versatile platforms for solid-state photochemistry and in operando spectroscopy. |
