Abstract
A novel bi-functional photorefractive (PR) poly( N-vinyl)-3-[ p-nitrophenylazo]carbazolyl with carbazolyl fragments and chromophoric azophenyl was synthesized by a post azo coupling reaction and characterized by 1H NMR, elemental analysis, UV–Vis absorption and FTIR spectroscopy. Then chemical hybridized poly( N-vinyl)-3-[ p-nitrophenylazo]carbazolyl-CdS nanocomposites with different molar ratio of CdS to poly( N-vinyl)-3-[ p-nitrophenylazo]carbazolyl were prepared. It was confirmed that the CdS particles had a nanoscale size and quantum confinement effect adopting transmission electron microscopy and UV–Vis absorption spectroscopy. The generation of photocurrent on illumination and photoconductive properties of the nanocomposites were studied. Significant enhancement in photoconductivity induced by the chemical doping of CdS in poly( N-vinyl)-3-[ p-nitrophenylazo]carbazolyl has also been demonstrated.
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