Preparation and Properties of Transparent Ultrathin Lanthanide‐Complex Films

Abstract

Highly transparent ultrathin films (UTFs) based on alternative layer-by-layer assembly of Eu- and Tb-based lanthanide complexes (LCs) and Mg-Al-layered double hydroxide (LDH) nanosheets are reported herein. UV-visible absorption and fluorescence spectroscopy showed an orderly growth of the two types of ultrathin films upon increasing the number of deposition cycles. AFM and SEM measurements indicate that the films feature periodic layered structures as well as uniform surface morphology. Luminescent investigations reveal that (LCs/LDH)n UTFs can detect Fe(3+) with relative selectivity and high sensitivity (Stern-Volmer constant KSV =8.43×10(3) L mol(-1) ); this suggests that (LCs/LDH)n UTFs could be a promising luminescent probe for selectively sensing Fe(3+) ion.

Large‐area flexible, transparent, and highly luminescent films containing lanthanide (III) complex‐doped ionic liquids for efficiency enhancement of silicon‐based heterojunction solar cell

“…Over the past decades, due to several unique photoluminescent features such as large Stokes shift (or low self‐absorption ratio) and high luminescence quantum efficiency, trivalent lanthanide ion (Ln 3+ ) complexes have been regarded as excellent optical centers for the thin films. Several Ln 3+ , like Eu 3+ and Tb 3+ , are capable of emitting pure visible light (red for Eu 3+ and green for Tb 3+ ) under appropriate UV light excitation via the so‐called “antenna effect,” and this is beneficial for improving the η pv of solar cells .…”

Lanthanide(III)‐Based Multicolor Luminescent Hybrid Gel for Amine Sensing

“…The value of τ 0 is determined to be 2.30 ms from the decay curve of Tb 3+ @BP. The values of η Tb‐Eu can be obtained according to the procedure reported elsewhere, and are listed in Table . The values reveal that the energy‐transfer efficiency gradually increases with decreasing concentration of Tb 3+ .…”

Covalent Grafting Terbium Complex to Alginate Hydrogels and Their Application in Fe3+ and pH Sensing

“…[29,30] The high K sv value reveals a strong quenching effect on the luminescence of Tb 3+ -Alg-TCPP hydrogels. The K sv value is calculated to be 2.73 × 10 5 L mol −1 , which is about two orders of magnitude higher than the previously published results.…”