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


  • N.I. Ahamed PG and Research Department of Physics, Thiru. Vi. Ka. Govt. Arts College, Thiruvarur-3, Tamil Nadu, India
  • D.B. Anburaj PG and Research Department of Physics, D.G. Govt. Arts College (W), Mayiladuthurai-1, Tamil Nadu, India
  • G. Nedunchezhian PG and Research Department of Physics, Thiru. Vi. Ka. Govt. Arts College, Thiruvarur-3, Tamil Nadu, India


In this work, equal molar ratio of L-Threonine and Manganese Acetate (LTMA) and 0.2 molar of Zn2+, Cd2+ and Pb2+ doped LTMA single crystals were grown in aqueous solutions using slow evaporation technique. These crystals were subjected to various studies including single crystal X-ray diffraction, powder X-ray diffraction, FTIR, UV-vis, energy dispersive X-ray spectroscopy (EDX) and microhardness test. The cell length and interfacial angles α, β, and γ of the grown crystals were determined. EDX 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 was carried out to study the optical behavior of the grown crystals. UV-vis studies determined the increasing energy band gap from 4.6 eV to 6.5eV and transmittance spectrum determined the lower cutoff wavelength of the grown crystals as 267 nm for the pure LTMA and ~200 nm for the doped LTMA crystals. Mechanical behavior of the crystals was studied by Vicker’s Microhardness study and their roughnesses were also reported.


M.L. Caroline and S. Vasudevan, "Growth and characterization of an organic nonlinear optical material" L-alanine alaninium nitrate, Materials Letters, vol. 62, pp. 2245-2248, (2008).

S. Dhanuskodi and J. Ramajothi, "Crystal Growth, thermal and optical studies of L-Histidine Tetrafluoroborate-a Semi Organic NLO materials", Cryst. Res. Technol., vol. (39) 7, pp. 592–597, (2004)

D. Eimerl, S. Velsko, L. Davis, F. Wang, J. Loiacono and F. Kennedy, "Deuterated L-Arginine phosphate: a new efficient nonlinear crystal", IEEE J. Quantum Electron, vol. 25, no. 2 , pp. 179-193, (1989).

D. Geetha, M. Prakash, M.L. Caroline and P.S. Ramesh, "Growth and characterization of the nonlinear optical single crystal" L-Phenylalanine-benzoic acid, Adv. Appl. Sci. Res., vol. 2, no. 2, pp. 86-92, (2011).

V. Ananthanarayanan, "Raman Spectra of Single Crystals of Zinc and Lithium Acetate Dihydrate", vol. 56, no. 4, pp. 188-197, (1962).

T. Arii and A. Kishi, "The effect of humidity on thermal process of zinc acetate", Thermochimica Acta, vol. 400 no. 1-2, pp. 175-185, (2003).

K. Arun and S. Jayalekshmi, "Growth and Characterization of Nonlinear Optical Single Crystals of L-Alaninium Oxalate", Journal of Minerals and Materials Characterization and Engineering, vol. 8, no. 8, pp. 635-646, (2009).

T. Balakrishnan and K. Ramamurthi, "Growth and characterization of glycine lithium sulphate single Crystal", Crystal Research and Technology, vol. 41, no. 12, pp. 1184-1188, (2006).

D. Balasubramanian, P. Murugakoothan and R. Jayavel, "Synthesis, growth and characterization of organic nonlinear optical bis-glycine maleate (BGM) single crystals”, Journal of Crystal Growth, vol. 312, no. 11, pp. 1855-1859, (2010).

J.H. Joshi, S. Kalainathan, D.K. Kanchan, M.J. Joshi and K.D. Parikh, "Effect of L-Threonine on growth and properties of ammonium dihydrogen phosphate crystal", Arabian Journal of Chemistry, vol. 13, pp. 1533-1550, (2020).

S.M. Britto Dhas, M. Suresh, P. Raji, K. Ramachandran and S. Natarajan, "Photoacoustic studies on two new organic NLO materials: L-threonine and L-prolinium tartrate", Crystal Research and Technology, vol. 42, no. 2, pp. 190-194, (2007).

S. Gunasekaran and G.R. Ramkumar, "Analysis on Suitability of Pure and α-Histidine Doped KDP Crystals in High Speed Applications", Indian Journal of Physics, vol. 83, pp. 1549, (2009).

C.S. Hwang, N.R. Lee, Y.A. Kim and Y.B. Park, "Synthesis of the Water Dispersible L-Valine Capped ZnS: Mn Nano crystal and the Crystal Structure of the Precursor Complex: Zn(Val)2(H2O)", Bull. Korean Chem. Soc., vol. 27. No. 11, pp. 1809-1814, (2006).

G.R. Kumar, S.G. Raja, R. Mohana and R. Jayavel, "Growth, structural and spectral analyses of nonlinear optical L-Threonine single crystals", Journal of Crystal Growth, vol. 275, pp. 1947-1951, (2005).

N. Indumathi, K. Deepa and S. Senthil, "Growth and characterization of L-Threonine Lithium Chloride: A New semi organic Non Linear Optical single crystal", IJEDR, vol. 8, no. 1, pp. 560-564, (2017).

R. Vivekanandhan, K. Raju, S. Sahaya Jude Dhas and V. Chidambaram, "Investigation of Novel Nonlinear Optical L-Threonine Calcium Chloride Single Crystal Grown by Solution Growth Technique", International Journal of Applied Engineering Research, vol. 13, no. 18, pp. 13454-13459, (2018).

S. Masilamani, A.M. Musthafa and P. Krishnamurthi, "Synthesis, growth and characterization of a semiorganic nonlinear optical material: L-Threonine Cadmium Chloride single crystals", vol. 10, no. 2, pp. S3962-S3966, (2017).

C. Vijayaraj, M. Mariappan, G. Nedunchezhian, D. Benny Anburaj and B. Gokulakumar, "Synthesis Growth and Characterization of a New NLO Material: L-Threonine Manganese Chloride" Indo–Asian Journal of Multidisciplinary Research (IAJMR), vol. 2, no. 2, pp. 555-560, (2018).

J. Elberin Mary Theras, D. Kalaivani, J. Arul Martin Mani, D. Jayaraman and V. Joseph, "Synthesis, structural and optical properties, ferromagnetic behaviour, cytotoxicity and NLO activity of lithium sulphate doped L-Threonine", Optics & Laser Technology, vol. 83, pp. 49-54, (2016).

T. Manimaran, P. Paramasivam, S. Bhuvaneswari, R.S. Abina Shiny, B. Ravindran and M. Mariappan, "Growth and Characterization of L-Threonine Potassium Sulphate" A New NLO Semi Organic Crystal, Research Review Journal, vol. 4, no. 03, pp. 644-647, (2019).

S.A.D. Christopher and N.N.K. Pillai, "Growth and Structural studies of Zn doped L-Threonine single crystal", IJES, vol. 4, no. 8, pp. 1-4, (2015).

M. Nagarajan, N.N. Pillai, S. Perumal, "Growth and Structural studies of Cu doped L-Threonine single crystal", IJLTEMAS, vol. IV. no. XI, pp. 7-11, (2015).

M.A. Jeba Queen, K.C. Bright, S.M. Delphine, and P.A. Udhaya, "Spectroscopic Investigation of supramolecular organometallic compound L-Threonine Cadmium Acetate Monohydrate", Spectrochemica Acta, Part A: Molecular and Biomolecular Spectroscopy, vol. 19, pp. S1386-1425, (2019).

A. Puhal Raj and C. Ramachandra Raja, "Synthesis, Growth, Structural, Spectroscopic, Thermal and Optical Properties of NLO Single Crystal L-Threonine Zinc Acetate", Photonics and Optoelectronics (P&O), vol. 3, pp. 56-64, (2013).

K. Sudhakar, S. Muniyappan and P. Murugakoothan, "Growth and Characterization of a Potential Organic NLO Single Crystal: Guanidinium 4-Aminobenzene Sulfonate (GuAS)", materials today: Proceedings, vol. 8, no. 1, pp. 256-263, (2019).




How to Cite

N. Ahamed, D. Anburaj, and G. Nedunchezhian, “Impact of Inner Dopants on Structural, Optical and Mechanical Properties of Unadulterated L-Threonine Manganese Acetate”, The Nucleus, vol. 59, no. 1, pp. 1–9, Feb. 2022.