Impact of Inner Dopants on Structural, Optical and Mechanical Properties of Unadulterated L-Threonine Manganese Acetate

N. I. Ahamed, D. B. Anburaj, G. Nedunchezhian


Equal molar ratio of L-Threonine and manganese acetate (LTMA) and 0.2 Molar mass of Zn2+, Cd2+ and Pb2+ doped LTMA single crystals were grown with their aqueous solution using the slow evaporation technique. These crystals were subjected to various studies such that single crystal X-Ray Diffraction Volume=530(4) Å3 increasedupto 540.8(4) Å3, Powder X-Ray Diffraction, FTIR, UV-optical, Energy Dispersive and Microhardness studies. The cell length and interfacial angles α=β=γ=90 ͦ of the grown crystals were determined. EDAX study confirms the placing of dopant ions Zn2+, Cd2+ and Pb2+ in the host material LTMA. FTIR analysis reported the functional group and UV-Vis analysis carried out the optical behavior of the crystals. UV-Vis absorption spectrum analysis determines the increasing energy band gap from 4.6eV to 6.5eV and transmittance spectrum determines the lower cutoff wavelength of the grown crystals as 267nm for pure LTMA and around 200nm for doped LTMA. Mechanical behaviors of the grown crystals have been studied by Vicker’s Microhardness Study and their roughnesses are reported.

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