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P. SELVARAJAN1,* , R. JOTHI MANI1, D. SHANTHI1
L-alanine is one of the simplest amino acids like glycine and it is a non-centrosymmetic crystal. Its nonlinear optical (NLO) property is highly pronounced when L-alanine is mixed with a non-centrosymmetric organic acid such as picric acid. In this work, L-alanine alaninium picrate (LAAP) salt was synthesized by making reaction between L-alanine and picric acid. Single crystals of LAAP salt were grown by slow evaporation technique. XRD studies reveal the monoclinic structure of the sample. EDAX study was used to identify the elemental composition of the grown crystal. Etching studies were carried out to see the etch pit patterns of LAAP crystal. Second-order and third-order studies were carried out for LAAP sample to analyze the nonlinear optical activity. UV-visible transmittance spectrum of LAAP crystal was recorded to find transparency and optical cut-off wavelength. Also dielectric studies were carried out to observe the electrical processes that are taking place in the LAAP crystal..
Organic compounds, Optical materials, Crystal growth, X-ray diffraction, Second-order NLO, Third-order NLO, Dielectric properties.
P. SELVARAJAN, R. JOTHI MANI, D. SHANTHI, Studies on spectral, dielectric and nonlinear optical properties of L-alanine alaninium picrate (LAAP) crystals, Optoelectronics and Advanced Materials - Rapid Communications, 9, 7-8, July-August 2015, pp.937-943 (2015).
Submitted at: Feb. 12, 2014
Accepted at: June 24, 2015
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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