Impurity do** is a promising method to impart new properties to various materials. Due to
their unique optical, magnetic, and electrical properties, rare-earth ions have been …

The attractive features of lanthanide-doped upconversion luminescence (UCL), such as high
photostability, nonphotobleaching or photoblinking, and large anti-Stokes shift, have shown …

Fluorescence imaging has become a fundamental tool for biomedical applications;
nevertheless, its intravital imaging capacity in the conventional wavelength range (400–950 …

The continuously growing importance of information storage, transmission, and
authentication impose many new demands and challenges for modern nano-photonic …

Currently, the development of circularly polarized luminescent (CPL) materials has drawn
extensive attention due to the numerous potential applications in optical data storage …

Abstract NaYF4: Ln3+, due to its outstanding upconversion characteristics, has become one
of the most important luminescent nanomaterials in biological imaging, optical information …

The near-infrared-IIb (NIR-IIb)(1,500–1,700 nm) window is ideal for deep-tissue optical
imaging in mammals, but lacks bright and biocompatible probes. Here, we developed …

Porphyrins and porphyrin derivatives have been widely explored for various applications
owing to their excellent photophysical and electrochemical properties. However, inherent …

External manipulation of emission colour is of significance for scientific research and
applications, however, the general stimulus-responsive colour modulation method requires …

Lanthanide-doped upconversion nanoparticles (UCNPs) are capable of converting near-
infra-red excitation into visible and ultraviolet emission. Their unique optical properties have …