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5 March 2021 Rational design of metal-free organic chromophores to form efficient long-lived room-temperature phosphorescent molecular crystals via H-bond-directed supramolecular self-assembly
Catherine Demangeat, Yixuan Dou, Bin Hu, Yann Bretonniere, Chantal Andraud, Anthony D'Aleo, Jeong Weon Wu, Eunkyoung Kim, Tangui Le Bahers, André-Jean Attias
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Proceedings Volume 11683, Organic Photonic Materials and Devices XXIII; 116830J (2021) https://doi.org/10.1117/12.2576848
Event: SPIE OPTO, 2021, Online Only
Abstract
Long-lived room temperature phosphorescence from organic molecular crystals has attracted great attention owing to potential applications in organic electronics, information storage, and biotechnologies. The features of the persistent luminescence strongly depend on the electronic properties of the individual molecules, and on their molecular packing in the crystal lattice. Here, a new strategy is developed by rationally designing phosphors incorporating and combining for the first time a bridge for sigma-conjugation and a moiety for H-bond-directed supramolecular self-assembly. The molecular crystals exhibit room temperature phosphorescence quantum yields that reach up to 20% and lifetimes up to 520 ms. This study provides a promising strategy for the development of molecular crystals exhibiting efficient long-lived room temperature phosphorescence.
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Catherine Demangeat, Yixuan Dou, Bin Hu, Yann Bretonniere, Chantal Andraud, Anthony D'Aleo, Jeong Weon Wu, Eunkyoung Kim, Tangui Le Bahers, and André-Jean Attias "Rational design of metal-free organic chromophores to form efficient long-lived room-temperature phosphorescent molecular crystals via H-bond-directed supramolecular self-assembly", Proc. SPIE 11683, Organic Photonic Materials and Devices XXIII, 116830J (5 March 2021); https://doi.org/10.1117/12.2576848
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KEYWORDS
Molecular self-assembly
Crystals
Chromophores
Molecular electronics
Phosphorescence
Luminescence
Molecules
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