Biomechanics Research Today is a free monthly online journal that collates and summarizes the latest research about Biomechanics, including details on mechanics of living organisms, movement, locomotion, prosthetic limbs.

Vibrational spectroscopic studies of an organic non-linear optical crystal 8-hydroxyquinolinium picrate.

Krishna Kumar V, Nagalakshmi R

Department of Physics, Periyar University, Salem 636011, Tamil Nadu, India. vkrishna_kumar@yahoo.com

8-hydroxyquinolinium picrate (8-HQP) was synthesized by the addition of equimolar quantities of 8-hydroxyquinoline (8-HQ) and picric acid (PA). Single crystals were grown from N,N dimethyl formamide (DMF) by restricted evaporation method at room temperature. The solubility of 8-HQP was determined in different solvents at various temperatures. The structural characterization of the grown crystals was carried out by X-ray diffraction. Vibrational modes were classified on the basis of group theoretical analysis and the spectral bands were compared with those of parent compounds in order to propose a tentative assignment by recording FT-IR, FT-Raman and polarized Raman spectra in different crystal orientations. The crystal possess lower cut-off at 230 nm and good transparency as confirmed by optical transmittance studies.

Published 6 March 2007 in Spectrochim Acta A Mol Biomol Spectrosc, 66(4): 924-34.
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