Efficient non-doped sky-blue fluorescent organic light emitting devices based on cyanopyridine-containing anthracene derivatives

Manipulating the benzenyl π-bridge of bisanthracene derivatives (BDs) for highly efficient deep-blue OLED emitters with CIEy = 0.06

“…At present, only a few molecular systems can develop high-efficiency blue or deep-blue luminescent materials, but it is difficult to balance issues such as color purity and stability. 11–13 Therefore, developing novel high-efficiency, high-color purity, and high-stability blue luminescent materials is of great significance.…”

Improving the Electroluminescence Properties of New Chrysene Derivatives with High Color Purity for Deep-Blue OLEDs

“…In this approach, a central core chromophore is selected that determines the luminous efficiency and band gap of the material; side groups are then introduced into the core group to control the molecular arrangement, polarity, and emission wavelength [10]. Considerable efforts have focused on the use of anthracene and pyrene chromophores as cores to achieve blue emission; however, these molecules show real blue or sky-blue emission when a side group is introduced due to the intrinsic conjugation length [11][12][13][14][15][16][17][18]. Chrysene, on the other hand, has a short conjugation length and exhibits a wide band gap, making it suitable for use as a deep-blue luminous core.…”