The development of single-component organic dual light-emitting molecules is of interest for a range of applications including white organiclight-emittingdiodes. Herein, a new thermally-activated delayed fluorescent molecule containing 4,6-bis-phenyl phenothiazine as donor units and 2-thiophene-1,3,5-triazine as acceptor unit was synthesized using a simple cost-effective method. This compound shows
Hydroxyphenyltriazine, Verfahren zu ihrer Herstellung und ihre Verwendung als UV-Absorber
申请人:ILFORD AG
公开号:EP0165608A2
公开(公告)日:1985-12-27
Verbindungen der Formel
worin mindestens einer der Substituenten R,, R2 ein Rest der Formel
ist, worin M ein Kation, m 1 oder 2, R4 Alkyl oder Alkoxy mit je 1 bis 4 Kohlenstoffatomen, Hydroxyl oder einen Rest der Formel -COR, worin R Alkyl mit 1 bis 8 Kohlenstoffatomen oder Phenyl bedeutet, und n 0, 1, 2 oder 3 ist, und der übrige Substituent bzw. die übrigen Substituenten unabhängig voneinander Alkyl, Aryl oder durch ein Heteroatom an den Triazinylrest gebundenes Alkyl oder Aryl, oder ein Heterocyclus ist, bzw. sind, eignen sich gut als UV-Absorber in organischen Materialien.
Synthetic Protocols towards Selenacalix[3]triazines
作者:Wim Dehaen、Joice Thomas、Wim Van Rossom、Kristof Van Hecke、Luc Van Meervelt、Mario Smet
DOI:10.1055/s-0032-1318265
日期:——
Selenium-bridged heteracalixarenes were synthesized by convenient one-pot SNAr reactions starting from variously 2-substituted 4,6-dichloro-1,3,5-triazine building blocks. Reactions of these precursors with sodium hydroselenide afforded the selenacalix[3]triazines as the only macrocyclic products. Yields of the cyclotrimers were significantly increased by optimization of the macrocyclization conditions, the optimum parameters being dependent on the triazine functionalization pattern. X-ray diffraction studies allowed unambiguous identification of the structures and comparison with the solid-state features of analogous heteracalixarenes.
Kauffmann,T. et al., Angewandte Chemie, 1972, vol. 84, p. 830 - 831
作者:Kauffmann,T. et al.
DOI:——
日期:——
Conjugated Asymmetric Donor-Substituted 1,3,5-Triazines: New Host Materials for Blue Phosphorescent Organic Light-Emitting Diodes
AbstractConjugated asymmetric donor‐substituted 1,3,5‐triazines (ADTs) have been synthesized by nucleophilic substitution of organolithium catalyzed by [Pd(PPh3)4]. Theoretical and experimental investigations show that ADTs possess high solubility and thermostability, high fluorescent quantum yield (35 %), low HOMO (−6.0 eV) and LUMO (−2.8 eV), and high triplet energy (ET, 3.0 eV) according to the different substitution pattern of triazine. The application as host materials for blue PHOLEDs yielded a maximum current efficiency of 20.9 cd A−1, a maximum external quantum efficiency of 9.8 %, and a brightness of 9671 cd m−2 at 5.4 V, making ADTs good candidates for optoelectronic devices.