Based on silver cluster-loaded zeolites, a novel white-emitting phosphor with high color-rendering index was achieved and applied to near-UV LED-based white LEDs.
Luminescent
materials with dynamic responsiveness to external stimuli
have attracted extensive attention for the development of advanced
sensors and smart materials; however, self-healing capability is also
of great importance for functional soft materials. An acid/base vapor
reversibly triggered luminescence switch with self-healing ability
is achieved by incorporating dynamic lanthanide metal–ligand
(Ln–L) coordination into the soft polydimethylsiloxane polymer
network. The emission color of the resultant luminescent material
could be modulated by altering either the Eu3+/Tb3+ molar ratio or the excitation wavelength. The luminescence “On–Off”
reversible switch is realized via direct alternating exposure to acid
and base vapor, realizing reversible information encryption and decryption.
The dynamic Ln–L cross-link as well as the hydrogen bond in
the luminescent material endow it with excellent self-healing capability,
high toughness, and stretchability. We believe this acid/base vapor-triggered
self-healing switching strategy provides new insights for expanding
the application range of luminescent materials.
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