TY - JOUR ID - 18264 TI - Synthesis, Structural and Spectroscopic analysis, Thermodynamic and Micro hardness testing of a Chalcone molecule JO - Advanced Materials Letters JA - AML LA - en SN - 0976-3961 AU - Usha, G. AU - Vasanthi, R. AU - Reuben Jonathan, D. AU - Ezhilarasi, K.S. AU - Krishna Priya, M. AD - PG and Research Department of Physics Queen Mary's College(A), Chennai-4, Tamilnadu, India Affiliated to University of Madras AD - PG and Research Department of Physics, Queen Mary's College (A), Chennai-4, Tamilnadu, India. Affiliated to the University of Madras. AD - Department of chemistry, Madras Christian college (A), Chennai-59,Tamilnadu, India. Affiliated to the University of Madras. Y1 - 2022 PY - 2022 VL - 13 IS - 2 SP - EP - KW - Chalcone KW - 1H KW - 13C NMR KW - photoluminescence KW - TGA/DTA KW - Vickers microhardness DO - 10.5185/amlett.2022.021696 N2 - A novel chalcone derivative, (2E)-3-(3, 4 dimethoxy phenyl)-1-(1-hydroxy-2 naphthyl)prop-2-en-1-one (DHNP), C21H18O4, has been synthesized from the mixture of 4-hydroxy acetophenone (0.05mol) and 4-hydroxy-3-ethoxybenzaldehyde (0.05mol)  by  Claisen-Schmidt reaction mechanism. The structural features of the grown crystal were elucidated by single X-ray diffraction (XRD) studies which confirm the title compound, belongs to the monoclinic system with the P21/n space group. Functional groups, the number of unique proton and carbon environments were identified using FT-IR, 1H, and 13C NMR spectral investigation. The optical behavior of the crystal was analyzed by UV-Vis absorption studies, and the value of the optical band gap energy (𝐸𝑔) of the crystal is found to be 3.386eV. The Photoluminescence (PL) spectrum of the compound indicates the green to yellow light emission in the visible region. By employing thermogravimetric analysis (TGA), the thermal stability of crystal and the dehydration and decomposition nature were found. The Coats and Redfern relation was applied to evaluate the kinetic and thermodynamic parameters. Mechanical properties such as the Hardness (HV), Meyer's index (n), Newtonian resistance pressure (W), load independent constant (b), and elastic stiffness constant (Cij) were calculated by performing a Vickers hardness test on the compound and found to exhibits an excellent mechanical power. UR - https://aml.iaamonline.org/article_18264.html L1 - https://aml.iaamonline.org/article_18264_a53a9da4b4e6639aea2e77a03e8b5e61.pdf ER -