Abstract
Solar energy harvesting is a promising alternative to the escalating energy demand. Among emerging technologies, MOlecular Solar Thermal (MOST) systems offer exciting avenues for solar fuel generation. However, their widespread application is partially hindered by the use of environmentally problematic and potentially hazardous organic non‐polar solvents, such as toluene. Addressing this challenge, we here developed a series of four norbornadienes (NBDs) featuring symmetric amide substituents via functionalization of the readily available diacid substituted NBD. These compounds exhibit enhanced solubility in greener solvents like ethanol, a significant advancement over non‐polar NBDs. Moreover, the reversible switching was demonstrated for three new NBDs through photoisomerization via UV‐light absorption and to form QC and reversible catalysis via a commercial heterogeneous gold‐based catalyst. By expanding the repertoire of environmentally benign solar fuel materials, this research contributes to the broader objective of sustainable energy generation and storage.
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