According to Kasha's rule, high-lying excited states usually have little effect on fluorescence.
However, in some molecular systems, the high-lying excited states partly or even mainly …

It is always a great challenge to achieve high‐efficiency solution‐processed ultra‐deep‐blue
organic light‐emitting diodes (OLEDs) with the Commission Internationale de l'Eclairage …

In conventional n–i–p perovskite solar cells (PVSCs), electron donor (D)–acceptor (A)
polymers have been found to be potential substitutes for doped spiro‐based small molecule …

Since the first development of organic light-emitting diodes (OLEDs) in 1987, imidazole
derivatives, mainly including phenanthroimidazole (PI) and benzimidazole (BI), have …

Blue luminescent materials are always highly desired for organic light‐emitting diodes
(OLEDs) but the electroluminescence (EL) performances for most blue emitters still need to …

In this work, two new blue emitters 4-(2-(3, 5-di (9H-carbazol-9-yl) phenyl)-1H-phenanthro
[9, 10-d] imidazol-1-yl) benzonitrile (DCCPPI) and 4-(2-(3′, 5′-di (9H-carbazol-9-yl)-[1 …

It is a persistent challenge to develop efficient, low roll-off, pure blue light emitting materials.
Here, employing rigid carbazole (Cz) and phenyl-phenanthroimidazole (PPI) moieties to …

Blue emitting materials with balanced charge carrying capacity are crucial for effective
OLED. Phenanthroimidazole based deep blue materials are developed with a donor …

Two novel bipolar deep‐blue fluorescent emitters, IP‐PPI and IP‐DPPI, featuring different
lengths of the phenyl bridge, were designed and synthesized, in which imidazo [1, 2‐a] …

Hybridized local and charge-transfer (HLCT) emitters have attracted extensive attention, but
the insolubility and severe self-aggregation tendency restrict their applications in solution …