Prostate cancer that is resistant to castration has been a prominent health challenge in the lives of men, particularly older men. This study looks at the spectroscopic properties, density functional theory (DFT) calculations, and molecular docking of the chemical N-(1H-pyrrol-2-yl) methylene)-4-methylaniline(PMMA) in order to see if it can be used as a chemotherapeutic medication for the treatment of castration-resistant prostate cancer(CRPC). The frontier molecular orbitals (FMO), Fukui reactivity functions, non-linear optics (NLO), and natural bond orbitals (NBO) were investigated further using DFT at the 6–311++G (d, p) with five different functional (B3LYP, B3PW91, ɷB97XD, PBEPBE, and M06–2X) for the investigation of the studied molecular structural properties. The experimental and theoretical vibration analysis of the synthesized molecule employing DFT investigations in different solvents at B3PW91/6–311++G (d, p) were found to be in good agreement. The docking results with three different proteins (4XVE, 1XF0, 5Y8Y) with PMMA showed good binding affinities when compared to the standard drug (Darolutamide) (DLA). The molecular docking results indicated that PMMA have an excellent chemotherapeutic potential for the treatment of CRPC. 

Structural Benchmarking, Density Functional Theory Simulation, Spectroscopic Investigation and Molecular Docking of N-(1H-pyrrol-2-yl) methylene)-4-methylaniline as Castration-Resistant Prostate Cancer Chemotherapeutic Agent.

2D transition metal dichalcogenide MoS2 monolayer quantum dots (MoS2-QD) and their doped boron (B@MoS2-QD), nitrogen (N@MoS2-QD), phosphorus (P@MoS2-QD), and silicon (Si@MoS2-QD) surfaces have been theoretically investigated using density functional theory (DFT) computation to understand their mechanistic sensing ability, such as conductivity, selectivity, and sensitivity toward NH3 gas. The results from electronic properties showed that P@MoS2-QD had the lowest energy gap, which indicated an increase in electrical conductivity and better adsorption behavior. By carrying out comparative adsorption studies using m062-X, ωB97XD, B3LYP, and PBE0 methods at the 6-311G++(d,p) level of theory, the most negative values were observed from ωB97XD for the P@MoS2-QD surface, signifying the preferred chemisorption surface for NH3 detection. The mechanistic studies provided in this study also indicate that the P@MoS2-QD dopant is a promising sensing material for monitoring ammonia gas in the real world. We hope this research work will provide informative knowledge for experimental researchers to realize the potential of MoS2 dopants, specifically the P@MoS2-QD surface, as a promising candidate for sensors to detect gas.

Heteroatoms (Si, B, N, and P) doped 2D monolayer MoS2 for NH3 gas detection

Antimicrobial activities of 1-phenyl-3-methyl-4-trichloroacetyl-pyrazolone: Experimental, DFT studies, and molecular docking investigation

Upon various investigations conducted in search for a nanosensor material with the best sensing performance, the need to explore these materials cannot be overemphasized as materials associated with best sensing attributes are of vast interest to researchers. Hence, there is a need to investigate the adsorption performances of various metal-doped fullerene surfaces: C59Au, C59Hf, C59Hg, C59Ir, C59Os, C59Pt, C59Re, and C59W on thiourea [SC(NH2)2] molecule using first-principles density functional theory computation. Comparative adsorption study has been carried out on various adsorption models of four functionals, M06-2X, M062X-D3, PBE0-D3, and ωB97XD, and two double-hybrid (DH) functionals, DSDPBEP86 and PBE0DH, as reference at Gen/def2svp/LanL2DZ. The visual study of weak interactions such as quantum theory of atoms in molecule analysis and noncovalent interaction analysis has been invoked to ascertain these results, and hence we arrived at a conclusive scientific report. In all cases, the weak adsorption observed is best described as physisorption phenomena, and CH4N2S@C59Pt complex exhibits better sensing attributes than its studied counterparts in the interactions between thiourea molecule and transition metal-doped fullerene surfaces. Also, in the comparative adsorption study, DH density functionals show better performance in estimating the adsorption energies due to their reduced mean absolute deviation (MAD) and root-mean-square deviation (RMSD) values of (MAD = 1.0305, RMSD = 1.6277) and (MAD = 0.9965, RMSD = 1.6101) in DSDPBEP86 and PBE0DH, respectively.

https://pubs.acs.org/doi/pdf/10.1021/acsomega.2c04044

Probing the Reactions of Thiourea (CH4N2S) with Metals (X = Au, Hf, Hg, Ir, Os, W, Pt, and Re) Anchored on Fullerene Surfaces (C59X)

The utilization of 3D nano-materials as sensors and detectors for several systems is continuously being exploited, moreover, the detection limit by already existing devices is still below the hallmark of 100% efficiency. Hence the efficacy of Al12N12, Ca12O12, and Mg12O12-nanostructured materials is exploited in this study for the efficient detection of phosgene. Density functional theory (DFT) approach has been utilized to arrive at the various conclusions and to ascertain the adsorption and sensing attributes of the studied nano-materials. The PBE0, ωB97XD, and M06–2X functionals at the 6–311 + +G(d,p) basis set were utilized for the computations of various molecular properties. In all cases, the Ca12O12 nanostructured material emerged as the most suitable surface for the efficient detection of phosgene, this was confirmed by its molecular electronic properties (energy gap), adsorption energy and other topological investigation. This conclusive scientific report was due to stronger adsorptions observed in C2 complex with adsorption energies − 4.7937 and − 4.5378 kcal/mol in PBE0 and ωB97X-D respectively. Also, relatively least energy gap, chemical hardness and electron potential values of 2.0104, 1.0052 and 6.4978 eV in C2 complex, indicating lowest stability and greatest reactivity and conductivity. This result indicates that the adsorption energy values were lesser using ωB97X-D than using PBE0 functional. Therefore, Ca12O12 surface is a better sensor than Al12N12 and Mg12O12 surfaces for phosgene gas adsorption. 

Modeling of Ca12O12, Mg12O12, and Al12N12 nanostructured materials as sensors for phosgene (Cl2CO)

Ionic liquids (ILs) have lately piqued scientific attention due to their potential applications in green transition technologies such as catalysis, electrochemistry, and photovoltaic. The investigation of structural stability, reactivity, topological analysis, and thermodynamics of 4-methylpridine (4-picoline) based ILs is carried out using an advanced computational electronic structure theory technique based on first principle density functional theory (DFT). The ILs were modeled based on the interaction of 4-methylpridine (4-picoline) ion (cation) with borate, nitrate, phosphate, carbonate, and sulfate anions which have been chemically symbolized respectively as follows: [PMHP]+[HBO3]−, [PMHP]+[HNO3]−, [PMPH]+[HPO3]−, [PHMP]+[HCO3]−, and [PHMPM]+[HSO4]−. The energy difference between HOMO - LUMO of the studied compounds were found to show a general decreasing trend in the order: [PMHP][H2BO3] > [PMHP][NO3]> [PMPH][H2PO3]> [PHMP][HCO3]> [PHMPM][HSO4] with the borate ([PMHP][H2BO3]) and sulfate ([PHMPM][HSO4]) ILs having the relatively highest and least energy gap of 6.30 and 4.14 eV respectively. Strong interaction energies of 329.50 kca/mol, 114.41 kcal/mol, 107.12 kcal/mol, 98.19 kcal/mol and 87.86 kcal/mol involving the bonding, anti – bonding and lone pair orbitals associated with the pair of ILs were obtained as a trend: [PMHP][HSO4] > [PMHP][HCO3] > [PMPH][H2BO3] > [PHMP][NO3] > [PHMPM][H2PO3]. The intermolecular hydrogen bond (H-bond) analysis between the cation and anions ILs pairs obtained from quantum theory of atoms-in-molecules (QTAIM) reveals strong, weak, and electrostatic bonds. [PMPH]+[HSO4]− ILs pair was observed to possess the highest binding energy of -20.06 kcal/mol in the same way energy decomposition analysis (EDA) reveals a relatively strong orbital interaction in the [PMPH][HSO4] ILs due to the increase in electrostatic interaction of the four O-atoms in the sulfate anion, the analysis of the thermodynamic results indicates that the syntheses of the ILs are exothermic and spontaneous. 

T. Gber

Papers

Structural Benchmarking, Density Functional Theory Simulation, Spectroscopic Investigation and Molecular Docking of N-(1H-pyrrol-2-yl) methylene)-4-methylaniline as Castration-Resistant Prostate Cancer Chemotherapeutic Agent.

Heteroatoms (Si, B, N, and P) doped 2D monolayer MoS2 for NH3 gas detection

Reactivity, stability, and thermodynamics of para-methylpyridinium-based ionic liquids: Insight from DFT, NCI, and QTAIM

Antimicrobial activities of 1-phenyl-3-methyl-4-trichloroacetyl-pyrazolone: Experimental, DFT studies, and molecular docking investigation

Probing the Reactions of Thiourea (CH4N2S) with Metals (X = Au, Hf, Hg, Ir, Os, W, Pt, and Re) Anchored on Fullerene Surfaces (C59X)