title: A dual approach to study the electro-optical properties of a noncentrosymmetric L-asparagine monohydrate.
abstract: In this work we reports the experimental and theoretical investigation on an organic noncentrosymmetric monohydrated L-asparagine (LAM) molecule. LAM single crystals were grown in specially designed beaker for the first time. Structural confirmation was done by identifying the vibrational modes using IR and FT-Raman spectroscopic studies. The ultra violet-visible-near infrared absorbance, diffuse reflectance spectra were recorded in the spectral range 190-2500 nm. The optical transparency was calculated and found to be ∼80%. Its optical band gap was calculated found to be ∼5.100 eV. Density functional theory (DFT) was employed to optimize the molecular geometry of LAM using B3LYP/6-31G(∗) basis set of theory. The HOMO-LUMO energy gap of 6.047 eV and transition energy of 176 nm (f0=0.024) have been found in semi-quantitative agreement with our experimental results. The dipole moment, polarizability and first hyperpolarizability were calculated at the same level of theory. The obtained results reveals that the titled compound can be a decent contender for nonlinear applications.
authors.affiliation: Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Center of Excellence for Advanced Materials Research, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia. Electronic address: shkirphysics@kku.edu.sa.
authors.forename: Mohd
authors.initials: M
authors.lastname: Shkir
authors.affiliation: Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Center of Excellence for Advanced Materials Research, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia.
authors.forename: Shabbir
authors.initials: S
authors.lastname: Muhammad
authors.affiliation: Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Center of Excellence for Advanced Materials Research, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia.
authors.forename: S
authors.initials: S
authors.lastname: AlFaify
authors.affiliation: Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Center of Excellence for Advanced Materials Research, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia.
authors.forename: Ahmad
authors.initials: A
authors.lastname: Irfan
authors.affiliation: Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Center of Excellence for Advanced Materials Research, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia.
authors.forename: I S
authors.initials: IS
authors.lastname: Yahia
mesh_terms: D001216:Asparagine / Q000737:chemistry*; D003460:Crystallization; D008956:Models, Chemical; D008968:Molecular Conformation; D055095:Optics and Photonics / Q000379:methods; D013055:Spectrophotometry, Infrared; D013059:Spectrum Analysis, Raman / Q000379:methods; D055672:Static Electricity; D014732:Vibration
chemical_list: D001216:Asparagine
keywords: Crystal growth; Density functional theory; FT-Raman spectroscopy; Nonlinear optical material; Optical properties