In:
Journal of Materials Chemistry C, Royal Society of Chemistry (RSC), Vol. 10, No. 20 ( 2022), p. 7857-7865
Abstract:
Multifunctional aggregation induced emission (AIE)-active luminophores have drawn great interest in materials science. In this work, a new three-dimensional (3D) luminophore of 9,9′-dimethyl-9,10-dihydroacridine substituted spiro(fluorene-9,9′-xanthene) (SFX-Ad) was synthesized and characterized. The highly twisted 3D configuration endows SFX-Ad with typical AIE activity, which exhibits weak emission in dilute solution and enhanced emission in the H -aggregate state. More importantly, the weakly emissive herringbone packing of SFX-Ad in the solid state displays mechanoresponsive luminescence (MRL) turn-on behavior, and underwent a crystal-to-amorphous transition. Based on its unique MRL behavior, using the samples of SFX-Ad in distinct luminescent states as the codes, anti-counterfeiting and information-encryption applications were realized. Additionally, taking its suitable molecular orbital energy levels and bright emission together, a blue organic light emitting diode ( λ EL = 421 nm, CIE (0.15, 0.10)) based on an SFX-Ad emitter yields a maximum current efficiency, power efficiency, and external quantum efficiency of 3.22 cd A −1 , 2.30 lm W −1 , and 2.58%, respectively.
Type of Medium:
Online Resource
ISSN:
2050-7526
,
2050-7534
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
2702245-6
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