Thermally Stable and Highly Luminescent Green Emissive Fluorophores with Acenaphtho[1,2-k]fluoranthene Cores and Aromatic Amine Groups

Liang Han; Kaiqi Ye; Chenglong Li; Yuewei Zhang; Hongyu Zhang; Yue Wang

doi:10.1002/cplu.201600458

Thermally Stable and Highly Luminescent Green Emissive Fluorophores with Acenaphtho[1,2-k]fluoranthene Cores and Aromatic Amine Groups

Chempluschem. 2017 Feb;82(2):315-322. doi: 10.1002/cplu.201600458. Epub 2016 Oct 26.

Authors

Liang Han¹, Kaiqi Ye¹, Chenglong Li¹, Yuewei Zhang¹, Hongyu Zhang¹, Yue Wang¹

Affiliation

¹ State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.

PMID: 31961538
DOI: 10.1002/cplu.201600458

Abstract

Four acenaphtho[1,2-k]fluoranthene-cored fluorophores 1-4 attached by a variety of N-containing electron-donating groups have been designed and synthesized. The appending N-containing moieties and the central acenaphtho[1,2-k]fluoranthene core form twisted molecular configurations and lead to separated HOMO and LUMO frontier molecular orbitals. X-ray crystallographic analysis demonstrates that the substituted aromatic amines separate the luminescent π-conjugated cores in the solid state. These compounds display excellent thermal and amorphous stabilities, high solid-state fluorescence quantum efficiencies, and ambipolar charge transporting properties, indicating that they are ideal candidates for fabricating non-doped organic light-emitting diodes (OLEDs). The device based on compound 4 exhibits the best electroluminescent performance with an external efficiency of 2.82 % and brightness of 45800 cd m^-2 , demonstrating the potential applications of this compound for OLED displays and lighting.

Keywords: OLEDs; aromatic amines; emission; fluorophores; organic solids.