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Recent Advances in Material Characterization, Properties and Its Applications - Experimental and Theoretical Approach

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 4547

Special Issue Editors


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Guest Editor
Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50-422 Wroclaw, Poland
Interests: crystallography; vibrational spectroscopy; hydrogen bonding

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Guest Editor
Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Thandalam, Chennai 602 105, Tamilnadu, India
Interests: materials science; crystal growth; density functional theory; spectroscopy; dielectric; nanotechnology

Special Issue Information

Dear Colleagues,

For developing new materials, true computational predictions of material properties are required before experimentation. Theoretical computational investigations allow us to go much beyond what is known empirically, and they can help guide future research. For organic, inorganic, and organometallic systems, accurate quantum treatment of chemical effects can predict geometries, vibrational frequencies, NMR chemical shifts, relative stabilities of families of isomers, activation energies, and reaction energies. Understanding the electrical structure, thermodynamic stability, and chemical reactivity of molecules requires understanding molecular equilibrium geometries. Quantum mechanical chemistry is crucial for modelling techniques such as density functional theory to anticipate material evolution.

Density functional theory (DFT) has been used to a wide range of physical sciences, including materials science, high-pressure physics and mineralogy, solid-state chemistry, and many more, and it now powers entire computational subdisciplines. A wide range of structural, chemical, optical, spectroscopic, elastic, vibrational, and thermodynamic phenomena may be calculated using modern DFT modelling algorithms. Predicting structure–property correlations has transformed experimental areas such as vibrational and solid-state NMR spectroscopy, where it is the principal tool for analysing and interpreting experimental spectra. Despite the significant hurdles posed by the description of excited states in semiconductor physics, significant progress has been made in the electronic structure of bulk and defect states. Studies are no longer limited to crystallographic structures that are known.

Authors are encouraged to submit original research and review articles that cover the areas of the experimental as well as the developed theoretical approaches that applied to investigate the above topics in organic and inorganic materials.

Prof. Dr. Mariusz K. Marchewka
Dr. Kanagathara Narayanan
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • density functional theory
  • generalized gradient approximation
  • time-dependent density functional theory
  • molecular orbital theory
  • local spin density approximation
  • structure optimization
  • electronic properties
  • nonlinear optical properties
  • vibrational spectroscopy
  • molecular docking
  • multiwfn—a multifunctional wavefunction
  • topology analysis
  • materials science
  • spectroscopy
  • crystal growth
  • crystallography
  • structure–property relationship
  • advanced material characterization
  • molecular modelling
  • molecular simulation

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Published Papers (2 papers)

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Research

11 pages, 3295 KiB  
Article
Mesomorphic, Computational Investigations and Dyeing Applications of Laterally Substituted Dyes
by Hoda A. Ahmed, Mohamed A. El-Atawy, Fowzia S. Alamro, Nada S. Al-Kadhi, Omaima A. Alhaddad and Alaa Z. Omar
Molecules 2022, 27(24), 8980; https://doi.org/10.3390/molecules27248980 - 16 Dec 2022
Cited by 18 | Viewed by 1917
Abstract
Two groups of laterally substituted non-mesomorphic and liquid crystalline materials bearing monoazo group were prepared and investigated via experimental and theoretical techniques. The molecular structures of the designed dyes were evaluated by FT-IR and NMR spectroscopic analyses. Mesomorphic examinations for all synthesized dyes [...] Read more.
Two groups of laterally substituted non-mesomorphic and liquid crystalline materials bearing monoazo group were prepared and investigated via experimental and theoretical techniques. The molecular structures of the designed dyes were evaluated by FT-IR and NMR spectroscopic analyses. Mesomorphic examinations for all synthesized dyes were investigated by polarized optical microscopy (POM) and differential scanning calorimetry (DSC). Results revealed that, the thermal and optical properties of investigated compounds are mainly dependent on their molecular geometry. The optimized geometries of the azo derivatives and their electronic absorption of the dyes were carried out using the B3LYP/6-311G level of the DFT method. The azo dyes were measured for their dyeing performance on polyester fabrics. The dyed fabrics have excellent fastness properties with a color strength of 1.49–3.43 and an exhaustion rate of 82–64%. The chemical descriptor parameters of disperse azo dyes in gas phase were calculated and correlated with dyeing parameters. Full article
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16 pages, 7616 KiB  
Article
Synthesis of Nanosilica for the Removal of Multicomponent Cd2+ and Cu2+ from Synthetic Water: An Experimental and Theoretical Study
by Basel Al-Saida, Arwa Sandouqa, Reyad A. Shawabkeh and Ibnelwaleed Hussein
Molecules 2022, 27(21), 7536; https://doi.org/10.3390/molecules27217536 - 3 Nov 2022
Cited by 5 | Viewed by 2194
Abstract
Copper and cadmium ions are among the top 120 hazardous chemicals listed by the Agency for Toxic Substances and Disease Registry (ATSDR) that can bind to organic and inorganic chemicals. Silica is one of the most abundant oxides that can limit the transport [...] Read more.
Copper and cadmium ions are among the top 120 hazardous chemicals listed by the Agency for Toxic Substances and Disease Registry (ATSDR) that can bind to organic and inorganic chemicals. Silica is one of the most abundant oxides that can limit the transport of these chemicals into water resources. Limited work has focused on assessing the applicability of nanosilica for the removal of multicomponent metal ions and studying their interaction on the surface of this adsorbent. Therefore, this study focuses on utilizing a nanosilica for the adsorption of Cd2+ and Cu2+ from water. Experimental work on the single- and multi-component adsorption of these ions was conducted and supported with theoretical interpretations. The nanosilica was characterized by its surface area, morphology, crystallinity, and functional groups. The BET surface area was 307.64 m2/g with a total pore volume of 4.95×103 cm3/g. The SEM showed an irregular amorphous shape with slits and cavities. Several Si–O–Si and hydroxyl groups were noticed on the surface of the silica. The single isotherm experiment showed that Cd2+ has a higher uptake (72.13 mg/g) than Cu2+ (29.28 mg/g). The multicomponent adsorption equilibrium shows an affinity for Cd2+ on the surface. This affinity decreases with increasing Cu2+ equilibrium concentration due to the higher isosteric heat from the interaction between Cd and the surface. The experimental data were modeled using isotherms for the single adsorption, with the Freundlich and the non-modified competitive Langmuir models showing the best fit. The molecular dynamics simulations support the experimental data where Cd2+ shows a multilayer surface coverage. This study provides insight into utilizing nanosilica for removing heavy metals from water. Full article
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