165820-83-7

Upstream product

• 35779-04-5 1-tert-butyl-4-iodobenzene 
• 165820-78-0 N¹,N³,N⁵-tris(4-tert-butylphenyl)benzene-1,3,5-triamine 
• 626-44-8 1,3,5-Triiodobenzene 
• 4627-22-9 bis(4-tert-butylphenyl)amine 
• 769-92-6 4-tert-Butylaniline 
• 626-39-1 1,3,5-trisbromobenzene 

Relevant academic research and scientific papers

Carbazole-Based DABNA Analogues as Highly Efficient Thermally Activated Delayed Fluorescence Materials for Narrowband Organic Light-Emitting Diodes

Carbazole-based DABNA analogues (CzDABNAs) were synthesized from triarylamine by regioselective one-shot single and double borylation. The reaction proceeded selectively at the ortho position of the carbazolyl group, where the highest occupied molecular o

A periphery cladding strategy to improve the performance of narrowband emitters, achieving deep-blue OLEDs with CIEy < 0.08 and external quantum efficiency approaching 20%

Deep-blue thermally activated delayed fluorescence (TADF) emitters with National Television System Committee (NTSC) standard (0.14, 0.08) and narrowband emission have been one of the challenging issues for organic light-emitting diodes (OLEDs). In this work, a novel molecular design strategy, periphery cladding, was used to design and synthesize three deep-blue multi-resonance TADF emitters, N,N, 5,9-tetraphenyl-5,9-dihydro-5,9-diaza-13b-boranaphtho[3,2,1-de]anthracen-7-amine (PAB), 2,12-di-tert-butyl-5,9-bis(4-(tert-butyl)phenyl)-N,N-diphenyl-5,9-dihydro-5,9-diaza-13b-boranaphtho[3,2,1-de]anthracen-7-amine (2tPAB) and 2,12-di-tert-butyl-N,N,5,9-tetrakis(4-(tert-butyl)phenyl)-5,9-dihydro-5,9-diaza-13b-boranaphtho[3,2,1-de]anthracen-7-amine (3tPAB). By cladding large steric hindrance tert-butyl unit at periphery of multi-resonance emitter, the intermolecular interactions were suppressed, thus reducing aggregation-induced emission quenching and improving the PLQY of emitter. 3tPAB with full periphery cladding exhibited higher PLQY (74.7%). As a result, the device based on 3tPAB acquired the best performance by using 1,3-di(9H-carbazol-9-yl)benzene (mCP) with low polarity as host. The maximum external quantum efficiency (EQEmax), CIE coordinates, and full-width at half-maximum (FWHM) of 3tPAB-based device were 19.3%, (0.141, 0.076), and 26 nm, respectively. To our knowledge, this is the first report about narrowband TADF OLEDs with single host that EQEmax approaches 20% while CIE coordinates meet the NTSC blue-light standard.

Cation Radicals of 1,3,5-Tris(diarylamino)benzenes

Cyclic voltametry and ESR studies reveal the nature of the cation radicals of some 1,3,5-tris(diarylamino)benzenes.Results show effectively delocalized radical cations with long solution lifetimes in cold media but with much less kinetic stability at ambi

Syntheses and Redox Properties of Di-, Tri-, Tetra-, and Pentaamines

A series of di-, tri-, tetra-, and pentaamines were synthesized as precursors for corresponding di-, tri-, tetra-, and penta(aminium radical-cations) by the aryl-N bond formation reaction between aryl iodides and in situ prepared copper amide in refluxing pyridine.Cyclic voltammograms of meta-connected derivatives consisted of irreversible waves which imply side reactions in addition to oxidation to aminium radical-cations.

Synthesis and oxidation of di-, tri-, tetra-, and pentaamines

A series of di-, tri-, tetra-, and pentaamines were synthesized as precursors of corresponding aminium radical-cations. Redox properties of these amines were studied by cyclic voltammetry and aminium radical-cations obtained by chemical oxidation of these amines were investigated by ESR and UV-VIS spectroscopy.