Stilbene and butadiene derivatives display NLO activity with SHG intensities up to 32 times that of urea for 2-chloro-3,4-dimethoxy-4?-nitrostilbene.

Background: Pyrazole is a simple aromatic ring an organic compound of the heterocyclic series that characterized five-membered ring structure which comprises located adjacent two nitrogen atoms and three carbon atoms. In recent years interest in the pyrazole chemistry excessively has increased due to many a wide range of properties. Because they have a wide range of specific properties such as ...

In this paper, the Stille coupling reaction was used to prepare four donor–acceptor–donor (D–A–D) type monomers. For this purpose, 2,3-bis(4-methoxyphenyl) quinoxaline was used as the acceptor unit, and thiophene derivatives (3,4-ethylenedioxythiophene, or EDOT; 3-methoxythiophene, or MOTh; 3-methylthiophene, or MTh; and thiophene, or Th) were used as the donor units. The monomers were polymeri...

Thiophene and sulfonamide derivatives serve as biologically active compounds, used for the manufacture of large numbers new drugs. In this study, 11 selected thiophene were computed their geometric parameters, such hyperpolarizability, chemical hardness (ƞ), electronic potential (μ), electrophilicity index (ω), ionization (I), electron affinity (A). addition, FT-IR UV-Vis spectra also simulated...