Organic Eu3+-complex-anchored porous diatomite channels enable UV protection and down conversion in hybrid material

Abstract

The organic Eu 3+ -complex [Eu(TTA) 3 Phen] has been incorporated into the channels of surface-modified frustules from diatoms as a key material to absorb and convert UV-photons to visible luminescence. Systematic investigation results indicate that the organic Eu 3+ -complex encapsulated in the functionalized diatomite channels exhibits enhanced luminescence and longer lifetime, owning to the Eu(TTA) 3 Phen complex interacting with its surrounding silylating agents. The organic Eu 3+ -complex-anchored porous diatomite hybrid luminescent material was compounded with polyethylene terephthalate (PET) by using a mini-twin screw extruder to prepare a self-supporting film of the hybrid material. Besides, the UV absorption properties of the composite films were investigated. These films will potentially be related to the UV protection of photovoltaic devices.

Silicon‐linked polyethylene glycol‐polyethylene terephthalate (PEG‐PET) nanostructures loaded with Eu3+‐complexes for hybrid luminescent PET materials

“…For example, hybrid luminescent PET films can be obtained through compounding with phosphor, and will potentially be an ideal photon energy transformation substrate for flexible devices. 20 However, the current method of obtaining luminescent polyesters containing phosphor substantially reduces transparency, due to the large particle size (5-25 μm) and poor dispersion. 21 Lanthanide complexes have characteristics including bright luminous color, high luminous purity, long luminescence lifetime, and high conversion efficiency.…”

“…Furthermore, the excellent plastic characteristic of PET makes it an excellent candidate matrix for functional agent‐doping. For example, hybrid luminescent PET films can be obtained through compounding with phosphor, and will potentially be an ideal photon energy transformation substrate for flexible devices 20 . However, the current method of obtaining luminescent polyesters containing phosphor substantially reduces transparency, due to the large particle size (5–25 μm) and poor dispersion 21 …”

Preparation of QDs@SiO2-PEG-LMPET and its influence on crystallization and luminescence of polyethylene terephthalate

“…Polyethylene terephthalate (PET) as one of the commonly used engineering plastics has the advantages of excellent physical and mechanical properties in a wide temperature range, further, luminescent PET has attracted widespread attentions, and has been applied in luminous fiber, anticounterfeiting, UV protection, flexible displays and other fields [1][2][3][4]. Luminescent PET is mainly realized via the addition of rare-earth ions [5].…”