Deep-blue organic light-emitting diodes based on multi-tert-butyl modified naphthylene

Unveiling the In Situ and Solvent Polymerization Engineering for Highly Efficient and Flexible Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes

“…Unlike the first generation of fluorescent materials with 25% lower exciton utilization and the second generation of phosphorescent materials that use heavy metals to increase spin–orbit coupling, the third generation of TADF materials have become the “new star” in the OLED field with their effective reverse intersystem crossing (RISC) to achieve 100% internal quantum efficiency and environmental friendliness without the use of any heavy metals. Although many TADF emitters using the vacuum vapor deposition process for device preparation have been reported so far, − the solution-processing technique for device preparation has more significant advantages in terms of low cost, low energy consumption, low consumables, and simple devices compared to vacuum vapor deposition. − In this context, polymeric materials are receiving more and more attention due to their good solubility and morphological stability suitable for solution-processable as well as flexible device preparation.…”

Theoretical study on the mechanism of hot excitons combined with aggregation-induced emission in efficient red fluorescent molecules

“…Several hundred materials with HLCT states have been synthesized and reported, which also show high photoluminescent quantum yield (PLQY) and EUE. 8–14…”

The Effect of Single-Atom Substitution on Structure and Band Gap in Organic Semiconductors

“…Optical band gap tuning in isostructural organic solids with detailed crystallographic studies on the structure–property relations remains elusive. Naphthalene is one of the most extensively used building blocks to construct conjugated materials for blue OLEDs. , Electron-accepting thiazole moieties and naphthalene-based organic materials have been used as semiconductors in organic electronics. , Our continuous efforts in exploring the origin of distinct crystalline supramolecular architectures , of small organic molecules and their potential application as functional materials motivated us to design a series of halogenated naphthathiazoles, illustrating a systematic trend in optical band gap reduction, in the order of increasing atomic number of halogen atoms (Scheme ). We designed novel bipolar naphthalene-based wide-band-gap semiconducting materials fused with an electron-withdrawing thiazole moiety and electron-donating halogen (Cl, Br, I) atom.…”

“…Naphthalene is one of the most extensively used building blocks to construct conjugated materials for blue OLEDs. 20,21 thalene-based organic materials have been used as semiconductors in organic electronics. 22,23 Our continuous efforts in exploring the origin of distinct crystalline supramolecular architectures 13,24 of small organic molecules and their potential application as functional materials 25 motivated us to design a series of halogenated naphthathiazoles, 26 illustrating a systematic trend in optical band gap reduction, in the order of increasing atomic number of halogen atoms (Scheme 1).…”