Photoluminescence of Alq₃‐ and Tb‐activated aluminium–tris(8‐hydroxyquinoline) complex for blue chip‐excited OLEDs

Abstract

The tris(8-hydroxyquinoline)-aluminium complex is the most important and widely studied as electron transporting and green light emitting material. Alq(3) and Tb(x) Al((1-x)) q(3) have been synthesized (where x = 0.1, 0.3, 0.5, 0.7 and 0.9) and blended films of Alq(3) and Tb(x) Al((1-x)) q(3) with PMMA and PS at different percentage weight (wt%) concentrations (e.g., 0.1, 1, 5, 10, 25 and 50 wt%) have been prepared. The synthesized materials and their blended thin films have been characterized by a photoluminescence (PL) technique; the synthesis and PL characterization are reported in this paper. The synthesized metal complex shows bright emission of green light with blue light excitation (440 nm) and the prepared Tb(x) Al((1-x)) q(3) phosphor may be applicable in blue chip-excited OLEDs for the newly developed wallpaper lighting technology.

Copper promoted synthesis of substituted quinolines from benzylic azides and alkynes

“…1). [16][17][18][19][20][21] Many of the classical methods, such as Ptzinger, Skraup, Friedlander, Doebner von Miller, Conrad-Limbach, and Combes reactions, known for the synthesis of quinolines are limited by harsh reaction conditions, limited substrate scope and low yields. 22 Among the various synthetic strategies, 23,24 Lewis acid promoted tandem cyclization reaction of N-aryl imines with terminal alkynes under oxidative condition allows access to a variety of 2,4-disubstituted quinolines.…”

Biofabrication Strategy for Functional Fabrics

“…When Alq 3 is encapsulated into the PMMA-co-MAA nanoparticle capsules, the UV/vis absorption characteristic is essentially maintained, and furthermore the absorption characteristic leads to a slight broad absorption of silk weave-L at about 390 nm (Figure S7). The excitation spectrum of Alq 3 exhibits a broad excitation band from 300 to 475 nm, 36 whereas the excitation band higher than 400 nm partly decays in LNPs and this excitation characteristic is further maintained in silk weave-L as well (Figure S8). By virtue of the inheritance of luminescent property for the luminescent Alq 3 complex, the silk weave-L displays a bluegreen emission with wavelength centered at 480 nm, which stems from the superposition of emission of LNPs at 515 nm and autofluorescence of silk at 471 nm, under 400 nm irradiation (Figure 3c).…”

Persistent phosphors for luminous paints: A review

“…Research speaks volumes on novel complexes of doped quinoline complexes that emit light in various regions of the visible spectrum. [64][65][66][67] 4.1.…”