70592-08-4

Upstream product

• 101-81-5 Diphenylmethane 
• 2128-93-0 biphenyl-4-yl-phenyl-methanone 
• 1607-57-4 Triphenylvinyl bromide 
• 5122-94-1 4-biphenylboronic acid 
• 919789-80-3 (2-(4-aminophenyl)ethene-1,1,2-triyl)tribenzene 
• 100-58-3 phenylmagnesium bromide 
• 6326-59-6 biphenyl-4-yl-dichloro-phenyl-methane 

Downstream Products

• 2128-93-0 biphenyl-4-yl-phenyl-methanone 
• 611-95-0 4-carboxybenzophenone 
• 1274702-34-9 9-(4-phenylphenyl)-10-phenylphenanthrene 

Relevant academic research and scientific papers

Full-color tunable mechanofluorochromism and excitation-dependent emissions of single-arm extended tetraphenylethylenes

We propose a new single-arm extension strategy on traditional tetraphenylethylene and successfully develop a new series of full-color (from ～450 nm to ～740 nm) tunable mechanofluorochromic materials. These materials exhibit efficient solid-state emission (quantum yield Φf > 10%) and high mechanofluorochromic contrast (wavelength shift from ～50 nm to ～100 nm). More importantly, we discover an unexpected excitation-dependent emission phenomenon of mechanofluorochromic materials and propose to utilize this new excitation-dependent emission behavior of materials to evaluate their mechanical-responsive performances more comprehensively. Finally, the unique feature of abundant emissions of mechanofluorochromic materials by changing the excitation light has shown application potential in dual channel anti-counterfeiting.

Aggregation-induced emission tetraphenylethene type derivatives for blue tandem organic light-emitting diodes

Tetraphenylethene (TPE) has been demonstrated to be an effective core molecule for generating excellent aggregation-induced emissions (AIE). Herein, we propose TPE moieties decorated with different biphenyl or anthracenyl fragments to avoid the crystalliz

NHC-Nickel Catalyzed C-N Bond Cleavage of Mono-protected Anilines for C-C Cross-Coupling

A Ni-catalyzed aryl C-N bond cleavage of mono-protected anilines, N-arylsulfonamides, has been developed. A new N-heterocyclic carbene derived from benzoimidazole shows high reactivity for the C-N cleavage/C-C cross-coupling reaction. The ortho-directing group is not required to break the C-N bond of sulfonyl-protected anilines, which are not limited to π-extended anilines. The mechanistic studies have revealed that a sulfamidomagnesium salt is the key coupling intermediate.

Method for synthesizing tetraaryl ethylene compound

The invention relates to a method for synthesizing a tetraaryl ethylene compound. The method comprises the steps: using arylethylene as a raw material, a diaryl iodide salt as an arylating agent and acopper salt or a cuprous salt as a catalyst, and performing a reaction in an aprotic polar organic solvent at 80-150 DEG C for at least 10 hours so as to obtain the target product. The method has thecharacteristics of simple synthesis steps, mild synthesis conditions, high product yield and the like, and is a commercially valuable method for synthesizing the tetraaryl ethylene compound.

Practical synthesis of unsymmetrical tetraarylethylenes and their application for the preparation of [triphenylethylene-spacer-triphenylethylene] triads

(Chemical Equation Presented) We have demonstrated that reactions of diphenylmethyllithium with a variety of substituted benzophenones produces corresponding tertiary alcohols that are easily dehydrated, without any need for purification, to produce various unsymmetrical and symmetrical tetraarylethylenes in excellent yields. The simplicity of the method allows for the preparation of a variety of ethylenic derivatives in multigram (10-50 g) quantities with great ease. The methodology was successfully employed for the preparation of various triphenylethylene (TPE)-based triads (i.e., TPE-spacer-TPE) containing polyphenylene and fluoranyl-based spacers. The ready availability of various substituted tetraarylethylenes allowed us to shed light on the effect of substituents on the oxidation potentials (Eox) of various tetraarylethylenes. Moreover, the electronic coupling among the triphenylethylene moieties in various TPE-spacer-TPE triads was briefly probed by electrochemical and optical methods.