Novel lanthanide nanoparticle frameworks for highly efficient photoluminescence and hypersensitive detection
Yuan-Jun Tong, Lu-Dan Yu, Nan Li, Minhui Shen, Xiaoru Peng, Huangsheng Yang, Yu‐Xin Ye, Fang Zhu, Janusz Pawliszyn, Jianqiao Xu, Gangfeng Ouyang
Abstract
assembly of luminescent LnCs. The confined LnCs are termed nanoparticles (NPs) to distinguish them from the pure LnCs. Secondary micropores with predictable sizes are successfully formed between the walls of the nanochannels and the orderly aligned NPs therein. By using a small organic ligand that can efficiently sensitize Ln(iii) cations in the assembly processes, the obtained composites show high quantum yields above 20%. The fluorescence can even be effectively maintained across nine pH units. The secondary micropores further enable the unambiguous discrimination of six methinehalides and ultrasensitive detection of uranyl ions. This study provides a new type of luminescent material that has potential for sensing and light emitting.