844-850A novel chalcone
derivative 4-{(1E,3Z)-3-(4-bromo phenyl]-3-[2-(2,4-dinitrophenyl)
hydrazinylidene] prop-1-en-1-yl} phenol [BPDP] has been synthesized and
structurally characterized by NMR and FTIR studies. The third order non-linear
optical properties of the BPDP have been studied using single beam Z scan
technique with a nanosecond-pulsed Nd: YAG laser source at 532 nm. The
coefficient of non linear refraction () of the compound is found to be
negative as revealed by the signature of closed aperture data. The results
obtained under open aperture configuration indicate that the material exhibits
reverse saturation absorption. The magnitude of real part of third-order
optical susceptibility ((3) ) and of molecular second order
hyperpolarizability (h) are found to be –3.5×10-20 m2V-2 and –5.9×10-48 m5V-2, respectively. The thermo
gravimetric analysis shows that the material possesses a very good thermal stability
up to 203<span style="font-family:Symbol;mso-ascii-font-family:
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