51545-35-8

Upstream product

• 3972-65-4 1-bromo-4-tert-butylbenzene 
• 4627-22-9 bis(4-tert-butylphenyl)amine 
• 35779-04-5 1-tert-butyl-4-iodobenzene 
• 769-92-6 4-tert-Butylaniline 
• 603-34-9 N,N-diphenylaminobenzene 
• 75-65-0 tert-butyl alcohol 

Downstream Products

• 37055-47-3 1,1,2,2-tetrakis(4-(tert-butyl)phenyl)hydrazine 
• 911830-78-9 2',7'-dibromo-10-(4-tert-butylphenyl)-2,7-di-tert-butyl-10H-spiro(ancridine-9,9'-fluorene) 

Relevant academic research and scientific papers

Effect of Bulky Functional Groups on Donor and Acceptor Interactions and their Photoluminescence Properties

Material designs that use donor and acceptor units are often found in organic optoelectronic devices. Molecular level insight into the interactions between donors and acceptors are crucial for understanding how such interactions can modify the optical pro

Boron-based donor-spiro-acceptor compounds exhibiting thermally activated delayed fluorescence (TADF)

Four boron-based donor-spiro-acceptor compounds, composed of different donor moieties and borylated 2-phenylpyridines as the acceptor, were studied. Their intense photoluminescence in the solid state can be tuned by changing the donor and long emission li

A search for blues brothers: X-ray crystallographic/spectroscopic characterization of the tetraarylbenzidine cation radical as a product of aging of solid magic blue

Magic blue (MB+? SbCl6- salt), i.e. tris-4-bromophenylamminium cation radical, is a routinely employed one-electron oxidant that slowly decomposes in the solid state upon storage to form so called 'blues brothers', which often complicate the quantitative analyses of the oxidation processes. Herein, we disclose the identity of the main 'blues brother' as the cation radical and dication of tetrakis-(4-bromophenyl)benzidine (TAB) by a combined DFT and experimental approach, including isolation of TAB+? SbCl6- and its X-ray crystallography characterization. The formation of TAB in aged magic blue samples occurs by a Scholl-type coupling of a pair of MB followed by a loss of molecular bromine. The recognition of this fact led us to the rational design and synthesis of tris(2-bromo-4-tert-butylphenyl)amine, referred to as 'blues cousin' (BC: Eox1 = 0.78 V vs. Fc/Fc+, λmax(BC+?) = 805 nm, εmax = 9930 cm-1 M-1), whose oxidative dimerization is significantly hampered by positioning the sterically demanding tert-butyl groups at the para-positions of the aryl rings. A ready two-step synthesis of BC from triphenylamine and the high stability of its cation radical (BC+?) promise that BC will serve as a ready replacement for MB and an oxidant of choice for mechanistic investigations of one-electron transfer processes in organic, inorganic, and organometallic transformations.

Novel spiro-based hole transporting materials for efficient perovskite solar cells

Three spiro-acridine-fluorene based hole transporting materials (HTMs), namely CW3, CW4 and CW5, are employed in the fabrication of organic-inorganic hybrid perovskite solar cells. The corresponding mesoscopic TiO2/CH3NH3PbI3/HTM devices are investigated and compared with that made with commercial spiro-OMeTAD. The best conversion efficiency of 16.56% is achieved for CW4 in the presence of tBp and Li-TFSI as additives and without a cobalt dopant. The performances of CW4 are further examined in terms of conductivity, mobility, morphology, and stability to show its potential as an alternative HTM.

Synthesis and characterization of spiro-triphenylamine configured polyfluorene derivatives with improved hole injection

We report on the synthesis of a spiro-fluorene derivative with bulky tert-butyl-substituted triphenylamine structure. The compound was synthesized in an attempt to enhance both hole injection and physical properties. A series of copolymers of the compound

New ammonia equivalents for the Pd-catalyzed amination of aryl halides.

[reaction: see text]. LiN(SiMe3)2, Ph3SiNH2, and LiNH2 can be be used as ammonia equivalents for the Pd-catalyzed coupling of aryl halides. Using these amine derivatives, simple anilines, including ortho-substituted ones, as well as di- and triarylamines can be readily prepared.

3,4'-Bis[bis(t-butyl- and methoxy-phenyl)amino]stilbene bis(cation radical)s and their electrochemical and magnetic properties

3,4'-Bis[bis(p-t-butylphenyl)amino]stilbene 1a and 3,4'-bis[bis(p- methoxyphenyl)amino]stilbene 1b were synthesized. The oxidation of 1 was analyzed by electrochemical measurements, which revealed the reversible formation of the bis(cation radical) 2 via a two-electron transfer reaction. The chemical oxidation of 1 with NOBF4 also gave the bis(cation radical) 2; UV/vis and ESR spectroscopies supported aminium radical formation without any side reaction. Magnetization, magnetic susceptibility, and the ESR ΔM(s) = ±2 signal of the biradicals indicated triplet ground states with a large triplet-singlet energy gap.

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.