Photophysical characterization and the self-assembly properties of mono- and bis-pyrene derivatives for cell imaging applications

Seven newly designed mono- and bis-pyrene derivatives with varying amino acid units self-assembled into fluorescent organic nanoparticles and were used for imaging in live cells.

Sulfur-mediated synthesis of unsymmetrically substituted N-aryl oxalamides by the cascade thioamidation/cyclocondensation and hydrolysis reaction

A facile and straightforward synthesis of unsymmetrically substituted N-aryl oxalamides from 2,2'-biphenyldiamines, 2-chloroacetic acid derivatives, elemental sulfur, and water has been developed. This protocol is distinguished by efficiency in water under metal-free conditions for N-aryl oxalamides bearing a side-chain NH2-group; it can be adapted for scale-up synthesis. The scope and limitations of this transformation have been investigated.