Phys.org March 18, 2024
Metal nanoclusters have emerged as NIR–emissive materials, but their room-temperature photoluminescence quantum yield (PLQY), especially in solution, is often low. Researchers in China studied the photophysics of Au22(tBuPhC≡C)18 (Au22) and its alloy counterpart Au16Cu6(tBuPhC≡C)18 (Au16Cu6) (where tBu is tert-butyl and Ph is phenyl) and found that copper doping suppressed the nonradiative decay and promoted intersystem crossing rate ~300-fold higher. According to the researchers their approach could enable the development of highly emissive metal cluster materials… read more. TECHNICAL ARTICLE
Molecular structures of Au22 and Au16Cu6 and structure anatomy of Au16Cu6. Credit: Prof. Zhou’s team