Journal
COMPUTATIONAL BIOLOGY AND CHEMISTRY
Volume 72, Issue -, Pages 192-198Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compbiolchem.2017.10.013
Keywords
Density functional theory (DFT); Non linear optics (NLO); UV-vis; PMMA polymers
Funding
- SERB, New Delhi, Govt. of India [EMR/2016/005830]
- SVNIT, Surat [FIR-DS13PH003]
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A density functional theory based scrutiny is implemented on the structure, electronic, optical and thermodynamic properties of the Poly (Methyl MethAcrylate) polymers (PMMA or nMMA; n = 1-5). The quantum chemical descriptors, e.g. HOMO-LUMO gap, ionization potential, chemical hardness, binding energies etc. of the PMMA polymers provides the measure for the structural and electronic properties. The parameters polarizability (a) and hyperpolarizability (beta) provides information for the non-linear optical (NLO) properties of the polymers. The absorption range of the PMMA polymer in the electromagnetic radiation spectrum during its growth is assessed by the UltraViolet-Visible (UV-vis) optical absorption spectra. To gain further insight on the origin of stability during the polymerization process, we have simulated frontier molecular orbitals (FMOs) and various thermodynamic properties, viz., entropy (S), enthalpy (H) and Gibbs free energy (G). (C) 2017 Elsevier Ltd. All rights reserved.
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