4.8 Article

Capturing Doublet Intermediate Emitters by Chemically Crosslinking Confinement towards Spatiotemporal Encryption

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Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202312185

Keywords

Aggregation; Encryption; Liquid Crystal Network; Luminescence; Radical Intermediate

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This study overcomes the challenges of observing intermediate emitters and discovers unique dual-state intermediates with distinctive luminescent properties through the spontaneously formed space limitations in polymer crosslinking networks and the capture of reactive intermediates. These findings provide a new perspective for designing intermediate emitters with liquid-crystal characteristics and photoresponsive features.
Photoluminescence is one of the most meticulous ways to manipulate light energy. Typical photoluminescent emitters are mostly stable substances with a pure photophysical process of spontaneous photon-emission from their excited states. Intermediate emitters are elusive attributing to their synchronous energy transfer process including photophysical and incomplete photochemical pathways. An intermediate emitter containing radicals is more difficult to be observed due to its inherent chemical reactivity. Here, these challenges are overcome by spontaneously formed space limitations in polymer crosslinking networks meanwhile chemically active intermediates are captured. These doublet intermediates exhibit unique long-wavelength emissions under chemically crosslinking confinement conditions, and their luminous mechanism provides a novel perspective for designing intermediate emitters with liquid-crystal character and photoresponsive features towards spatiotemporal encryption, promising for the detection of photochemical reactions and the development of fascinating luminescent systems. Radical intermediates with red emission are captured by a strategy of chemically crosslinked confinement. The emitters have unique photochemical activity and work in spatiotemporal encryption.image

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