Naphthalene anhydride triphenylamine as a viscosity-sensitive molecular rotor for liquid safety inspection

A viscosity-sensitive molecular rotor, DPPBQD, was synthesized through the Suzuki coupling reaction successfully. This molecular rotor was constructed by the naphthalene anhydride and triphenylamine moieties, formed into a typical twisted...

Crystal phase-selective synthesis of intermetallic palladium borides and phase-regulated (electro)catalytic properties

Three crystal phases of Pd-B intermetallics, including Pd6B, Pd5B2 and Pd2B, are synthesized, and their phase-dependent catalytic activities toward electrochemical water splitting and Suzuki coupling reaction are studied. In both...

Synthesis of Stilbenes Using Various Catalysts and Investigation of their Optical Properties

Stilbenes substituted with –CN, –OMe and –Br were synthesized using four different Lewis acid catalysts and their reaction efficiencies were compared. In addition to McMurry reagents known in literature, a more familiar and economical catalyst ZnCl2 was used for the first time in our reaction procedures. Furthermore, bromine substituted stilbenes were subjected to Suzuki coupling reactions to append a triphenylamine (TPA) unit, which enhances fluorescence emissions. Solvatochromic properties of synthesized stilbenes were investigated and aggregation caused quenching (ACQ) properties of TPA containing molecules were systematically examined. Optical properties were also theoretically investigated.