Enhanced NIR Luminescence of Nanozeolite L Loading Lanthanide β‐Diketonate Complexes

Abstract

Herein, we report the preparation of zeolite NIR luminescence materials with a remarkable increase of luminescence intensity by attaching stopper molecule (an imidazolium salt) to the channel entrances of zeolite L loading with NIR lanthanide (Er 3+ -β-diketonate complexes (Ln＝Er or Nd) with high coordination numbers through the decreasing of the proton strength in the zeolite channels. The obtained materials were characterized with SEM and photoluminescence spectroscopy. We believe that this hybrid material will be an appealing candidate for the applications of optical fiber, telecommunications and bio-imaging.

Near-Infrared Inorganic Nanomaterials for Precise Diagnosis and Therapy

“…The rare-earth nanoparticles (RENPs) have the special optical characteristics of various emission wavelength, long lifetime non-photobleaching and large stokes shift ( Ma et al, 2016 ; Li D. et al, 2020 ; Zhou et al, 2020 ). The strategy of doping and regulating the morphology endow the RENPs with excellent NIR optical properties ( Liang et al, 2015 ; He et al, 2020 ).…”