High-performance two-photon absorption luminophores: large action cross sections, free from fluorescence quenching and tunable emission of efficient non-doped organic light-emitting diodes?
Journal of Materials Chemistry C Pub Date: 2014-01-22 DOI: 10.1039/C3TC32052A
Abstract
Two novel quadrupolar D–π–D type two-photon absorption (2PA) luminophores PA2F4H8E8 and AnA2F4H8E8 were synthesized by Wittig–Horner reaction in high yields. By using distyrylbenzene as the π-bridge center, PA2F4H8E8 shows two-photon absorption aggregation-induced emission enhancement (2PA-AIEE) and exhibits exceptionally large 2PA and 2PA action cross-sections up to ～6300 GM and ～1400 GM at 800 nm in THF, respectively. A non-doped electroluminescent (EL) device of PA2F4H8E8 displays good performance with an extremely low turn-on voltage of 2.6 V and a high brightness of 9837 cd m?2.
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Journal Name：Journal of Materials Chemistry C
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