دراسة السلوك الكهركيميائي لبعض المركبات العضوية : درس في هذا العمل السلوك الكهركيميائي لبارا نترو الفينول 4,2 - ثنائي نترو الفينول , 2,4,6- ثلاثي نترو الفينول ( حمض البيكريك )
A chemical sensor was prepared by deposition of polypyrrole films by
chemical polymerization of pyrrole at room temperature, using hexahydrate
ferric chloride as oxidant, on a ceramic substrate placed on the bottom of the
beaker (in-situ polymeriz
ation). On the substrate two interdigitated metallic
electrodes were priory deposited by screen printing, to reduce film resistance.
These films were characterized by different methods namely FTIR, UV-Vis,
XRD.
In this paper, an optical setup to produce harmonic hyper-Rayleigh light
scattering (HRS) from organic molecules in solution has been built up. In
principle, HRS measures contribution coefficients of dipole and octupole parts.
The nonlinear suscep
tibility of the second order of six organic molecules in
solution from different chemical components such as Pyridinium, Quinolinium
groups and organic Borone complexes has been determined. The nonlinear
susceptibility measurements help to discover and select the most efficient
molecules which can be used later as polymer matrices.
