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ACS Appl Mater Interfaces. 2018 Apr 18;10(15):13048-13052. doi: 10.1021/acsami.8b02573. Epub 2018 Apr 5.

White Light Emission from Cucurbituril-Based Host-Guest Interaction in the Solid State: New Function of the Macrocyclic Host.

Author information

1
Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province , Guizhou University , Guiyang , Guizhou 550025 , China.

Abstract

Energy transfer and interchange are central for fabricating white light-emitting organic materials. However, increasing the efficiency of light energy transfer remains a considerable challenge because of the occurrence of "cross talk". In this work, by exploiting the unique photophysical properties of cucurbituril-triggered host-guest interactions, the two complementary luminescent colors blue and yellow for white light emission were independently obtained from a single fluorophore dye rather than energy transfer. Further study suggested that the rigid cavity of cucurbiturils efficiently prevented the aggregation of the dye and improved its thermal stability in the solid state by providing a regular nanosized fence for each encapsulated dye molecule. As a result, a novel macrocycle-assisted supramolecular approach for obtaining solid, white light-emitting organic materials with low cost, high efficiency, and easy scale-up was successfully demonstrated.

KEYWORDS:

aggregation; cucurbituril; energy transfer; host−guest interaction; solid white-light-emitting

PMID:
29589744
DOI:
10.1021/acsami.8b02573

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