A research group led by Professor WU Kaifeng from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences (CAS) reported the successful conversion (The conversion of infrared photons enables rapid organic synthesis under sunlight) of near-infrared photons by passive conductors and demonstrated new applications with solar conjunction.
The study was published in Nature Photonics on February 6.
The conversion of near-infrared photons to visible photons can improve the performance of photovoltaics, photoredox catalysis and phototheranostics. Three sensitive compounds are efficient methods for photon conversion.
However, the current photosensitizer that can absorb near-infrared often contains useful or toxic substances, for example palladium or platinum complexes and lead chalcogenide nanocrystals.
In this study, researchers reported zinc-doped CuInSe2 nanocrystals as a near-environmentally safe conductor for near-infrared and visible conversion, which achieved an emission efficiency of 16.7% for this show.
This transformation process is linked to photoredox catalysis, allowing reductive dehalogenation, amine oxidation, carbon-oxygen bond formation, and efficient photopolymerization by near-infrared photons.
Most importantly, due to the broadband light capture of nanocrystals in the near infrared, these reactions are fast under indoor sunlight, allowing, for example, the polymerization of acrylates in just 30 seconds .
“Organic synthesis under sunlight, or solar synthesis, is a century-old concept, pioneered by Ciamician et al. But the vision of organic chemists is limited to the use of visible photons and light the sun,” said the professor. Wow. “Our study expands the possibilities of solar fusion with visible and near-infrared photons of sunlight, which is poised to give this technology a big boost.”
