Near‐infrared (NIR) light is well‐suited for the optical imaging and wireless phototherapy of
malignant diseases because of its deep tissue penetration, low autofluorescence, weak …

Upconversion (UC) is a fascinating anti-Stokes-like optical process with promising
applications in diverse fields. However, known UC mechanisms are mainly based on direct …

Metal‐based upconversion luminescence transforming high‐energy photons into low‐
energy photons is an attractive anti‐Stokes shift process for fundamental research and …

Previously limited to highly symmetrical homoleptic triple‐helical complexes [Er (Lk) 3] 3+,
where Lk are polyaromatic tridentate ligands, single‐center molecular‐based upconversion …

The rational engineering of molecules is a powerful chemistry tool of pivotal importance in
the fields of molecular magnetism and luminescence. Hence, systems that can be …

Lead-free halide double perovskite materials are gaining recognition because of their
excellent optoelectronic performance. However, achieving multimode luminescence with …

Recent advances in rare earth (RE) oxide application in energy conversion, particularly
upconversion (UC) and downconversion (DC), have made remarkable progress. With rising …

Lanthanide‐based upconversion molecular complexes have potential application in diverse
fields and attracted considerable research interest in recent years. However, the similar …

Achieving upconverted circularly polarized luminescence (UCCPL) in rare-earth complexes
has long been considered a formidable challenge due to the inherently low upconversion …

Ligands combining two lateral bis‐pyridyl‐phosphonated‐pyclens were synthesized, using
a flexible linear pegylated linker (L2) or a bulkier K22 crown‐ether (L3). A functionalized …