92638-87-4Relevant articles and documents
Versatile Direct Cyclization Constructs Spiro-acridan Derivatives for Highly Efficient TADF emitters
Liu, He,Liu, Zhiwen,Li, Ganggang,Huang, Huaina,Zhou, Changjiang,Wang, Zhiming,Yang, Chuluo
, p. 12376 - 12380 (2021)
Spiro-acridan (SpA) derivatives possess a great potential in preparing efficient thermally activated delayed fluorescent (TADF) emitters. However, the conventional synthetic routes are cost-expensive and time-consuming. The development of a simple procedure to synthesize SpAs is still in urgent pursuing appreciated by academic and industrial communities. In this contribution, we present a feasible acid-catalyzed solvent-free metal-free cyclization between diarylamines and ketones to construct SpAs. The as-constructed moieties provide a wide possibility to assemble efficient TADF emitters. As an example, D2T-TR with high photoluminescent quantum yield and proper TADF character is applied in organic light emitting diodes (OLEDs) which achieves a maximum external quantum efficiency (EQE) of 27.1 %. This work shows us a bright inspiration on developing excellent organic optoelectronic materials and an effective tool to realize it.
Synthesis and Conformation of Spiroacridans
Tritschler, Wolfgang,Sturm, Ernst,Kiesele, Herbert,Daltrozzo, Ewald
, p. 2703 - 2713 (2007/10/02)
Spiroacridans 4, 5 are easily obtained by condensation of diarylamines 1, 2 and cyclic ketones 3.NMR and UV spectroscopic investigations show that the 9-arylsubstituted spiroacridans 4d, e and 5d exist in a twisted (boat) conformation with a pseudoequator
