Seraj Omar Alzahrani

Taibah University · Department of Chemistry

Povidone-iodine is identified as one of the widely applicable antiseptic reagents for treatment of skin infection and wound healing. Controllable releasing of povidone-iodine is extensively required for healing of chronic wounds. The release of povidone-iodine was systematically studied from the composites based on carboxymethyl starch (CMS). Curre...

The chemokine receptor CXCR4 is implicated in multiple diseases including inflammatory disorders, cancer growth and metastasis, and HIV/AIDS. CXCR4 targeting has been evaluated in treating cancer metastasis and therapy resistance....

Pd(II), VO(II), Cu(II), and Ag(I) interacted with Guanidinobenzimidazole (BIG) to form four mixed ligand metal chelates in the presence of Imidazole (I). The synthesized compounds were investigated employing CHN, mass spectra, FT-IR, NMR spectra, magnetic moment, electronic spectra, TGA, and molar conductance. The Ft-IR displayed that BIG interacts...

Conjugated polymers have recently been under active investigation as promising alternatives to use in photo-catalysis. This is due to their unique advantages of low cost, high chemical stability, and molecularly tunable optoelectronic properties. This work explores the easy way to synthesize efficient poly ortho-chloroaniline (pO-CAN) via the chemi...

The synthesis of a simple, highly tunable, and effective BSI ligand, 2‐(benzothiazol‐2‐ylimino)‐2,3‐dihydro‐1H‐imidazol‐4‐ol, was presented. Three new coordinating substances of BSI ligand were synthesized. Various spectroscopic and analytical methods, including ¹H NMR and ¹³C NMR, infrared (IR), ultraviolet–visible (UV‐vis), thermal conduction, an...

Photochromism is an interesting method to enhance the anticounterfeiting activity of commercial products. Polyester fibers have been significant polymers for a variety of applications; however, they have been known to resist staining due to the absence of reactive dyeing site on their fibrous surface. Herein, we present recycled nonwoven polyester...

A simple strategy was presented for potential industrial preparation of persistent afterglow lightweight plastic concrete toward smart hard surfaces. Rare-earth activated aluminate (REA) pigment nanoparticles (NPs) were integrated into plastic bar. The transparency of the prepared plastic bar can be achieved by consistent distribution of REA NPs in...

Novel graphene oxide-based waterborne acrylic emulsion paints were prepared for multifunctional smart coatings with long-persistent photoluminescence, anticorrosion, hydrophobic and photochromic properties. Environmentally friendly graphene oxide nanosheets were successfully prepared through ferrocene-catalyzed oxidation of sugarcane bagasse agricu...

Polypropylene fibers have been applied in various fields, such as automotives, plastic furniture, medical devices, and food packaging. Polypropylene fibers are characterized by low-cost, high flexural and impact strength, as well as high resistant to chemicals, moisture, fade, electricity and fatigue. However, polypropylene fiber is inherently resi...

Nacre structure has aragonite polygonal tablets, tessellated to generate separate layers, and exhibits adjacent layers and tablets within a layer bonded by a biopolymer. Herein, we report the development of nacre‐like organic/inorganic hybrid nanocomposite coating consisting of epoxy tablets as well as rare‐earth activated aluminate and graphene ox...

Coordination compounds of Ag(I), Cu(II), Ni(II), Fe(III) and VO (II) ions were synthesized from the ligand 2-(((9H-purin-6-yl)imino)methyl)-4-bromophenol (ABS). Microanalysis, magnetic susceptibility, infrared spectroscopy, Ʌm calculation, and thermal analysis were utilized to inspect the structure of the investigated complexes. As per the data col...

Long-persistent photoluminescent and photochromic glass material capable of changing color under UV irradiation has been produced. With the simple immobilization of alkaline earth aluminate nanoparticles, a photoluminescent translucent glass has been created by the sol-gel method. The glass substrates were shown to change color to green under UV li...

The current research focuses on the treatment of Cr(III), Fe(III) and Cu(II) metal ions with aryl hydrazone ligand named (E)-4-(((diphenylmethylene)hydrazono)methyl)benzene-1,3-diol (DPHB) to afford four novel solid complexes with high yields. Different characterization approaches, including infrared, UV-visible, and NMR spectroscopies, elemental a...

Ball milling was used to obtain new Schiff-base complexes from Fe(III), Co(II), Ni(II), and Zn(II) ions in their solid form, which is considered a green method of preparation. Several spectroscopic (IR, UV–Vis, ¹H NMR, Mass, SEM, EDX, XRD) and analytical approaches were used to suggest the geometries of isolated compounds. Coats–Redfern and Horowit...

The current research focuses on the treatment of Mn(II) Cu(II) and Fe(III) metal ions with 1-(Benzhydrylidene-hydrazonomethyl)-naphthalen-2-ol (aryl hydrazone DHPN) ligand, producing three new solid complexes with substantial yields. In all mononuclear crystalline metal chelates with high thermal stability, different characterization techniques inc...

A novel bioactive series was synthesized from Zn(II), Pd(II), Cr(III) and VO(II) ions with a new Schiff base derivative (HNP) [HNP = 1-(Pyrimidin-2-yliminomethyl)-naphthalen-2-ol]. The proposed structures were defined from elemental analysis, molar conductivity, magnetic moment, IR, ¹H NMR, UV-Vis, and TGA. Based on analytical and spectroscopic dat...

Fusarium species threaten wheat crops around the world and cause global losses. The global trend is toward using biological materials such as selenium (Se) in nano form to control these fungi. Bulk selenium is toxic and harmful at high doses; however, selenium nanoparticles are safe; therefore, the aim of this study to employ the biological seleniu...

This work aims to evaluate the antibacterial activity of biological zinc nanoparticles (BIO-ZnONPs) against pathogenic fish bacteria and assess the effect of BIO-ZnONPs on the performance, behavior, and immune response in Nile tilapia (Oreochromis niloticus) as compared to chemical zinc nanoparticles (CH- ZnONPs). Aspergillus niger TS16 fabricated...

New Cd(II), Hg(II), Zn(II), UO2(II) complexes were prepared from cyclohexanone-[N-(3-hydroxy-2-naphthoyl)]hydrazone (H2CHNH) ligand by using ball milling technique. The formed compounds were elucidated by spectral (IR, NMR, SEM, EDX, Mass), analytical and conformational techniques. Schiff base ligand exhibited variable binding modes towards the met...

New Gd³⁺, Ce³⁺, Sm³⁺, and Nd³⁺ complexes of indole-3-acetic acid hormone have been synthesized and analyzed by IR, Raman and UV-Vis spectra, XRD, analytical (elemental, EXD, SEM), and theoretical methods. IR spectra of complexes support eight (Gd³⁺ and Ce³⁺) and nine (Sm³⁺ and Nd³⁺) -fold coordinations via three ligands in their mononegative bident...

A green synthetic pathway of two mononuclear M(II)-complexes (M = Ni2+, as non-oxy-metal ion and ZrO2+, as an oxy-metal ion, NiLig and ZrOLig, respectively) of imino-naphthalenol sodium sulfonate ligand (H2Lig) was followed. With various physico-chemical tools, their chemical compositions were elucidated. Material-studio package was applied to conf...

Novel bioactive complexes were prepared from Cu(II), Fe(III) and Pd(II) ions with pyrano thiazole derivative (PTP) [2-amino-6-oxo-3-(piperidinylamidino)-4-phenyl-6,7-dihydro-pyrano[2,3-d]-5,7-thiazol]. CHN, FT-IR, UV–Vis, ¹H NMR, ¹³C NMR, molar conductance and TGA results have been used to determine the chemical formulae of new compounds. According...

The condensation reaction of 3-oxo-N-(pyridine-2-yl)butanamide and 4-chlorobenzo hydrazide yields a new Schiff base ligand which was characterized to be a mixture of tautomer forms. Two new Cu(II) complexes were prepared from chloride or acetate salt and then characterized to recognize the effect of conjugated anion nature on the chemical formulae...

An organometallic azomethine ferrocenyl ligand (FCAP) and its transition metal complexes ([M (FCAP)2], where M = VO²⁺, Mn²⁺ cations, and [M (FCAP) (CH3COO⁻ or NO³⁻)], where M = Zn²⁺ and Pd²⁺ cations) were prepared. Their structures were confirmed via various spectral and physicochemical studies performed. The crystallinity of the investigated metal...

In the present study, naphthyl acetohydrazide (HL) ligand was prepared and used for the synthesis of new six amorphous transition metal (Co(II), Ni(II), Cu(II), Zn(II), Pb(II), Cd(II)) complexes. All the compounds were characterized by elemental analysis, UV-vis, FT-IR, 1H- and 13C-NMR, and Matrix-Assisted Laser Desorption Ionization (MALDI). The s...

In the present study, naphthyl acetohydrazide (HL) ligand was prepared and used for the synthesis of new six amorphous transition metal (Co(II), Ni(II), Cu(II), Zn(II), Pb(II), Cd(II)) complexes. All the compounds were characterized by elemental analysis, UV-vis, FT-IR, 1H- and 13C-NMR, and Matrix-Assisted Laser Desorption Ionization (MALDI). The s...

The salt of Aurintricarboxylic acid (ATA) was utilized in this study to synthesize new alkaline earth metal ion complexes. The analytical results proposed the isolation of mononuclear (Sr⁺²&Ba⁺²) and binuclear complexes (Mg⁺²&Ca⁺²). These complexes were analyzed by available analytical and spectral techniques. The tetrahedral geometry was suggested...

New Co(II), Ni(II) and Cu(II) complexes were prepared from thiophene derivative and then characterized to elucidate their chemical formulae. IR-spectral data suggested a monobasic tridentate binding mode for the ligand towards the metal ions within mono-nuclear complexes. Ligand filed transitions as well as magnetic susceptibility, orient strongly...

A series of new complexes derived from Pd(II) ,Cu(II) and Fe(III) ions and thiazole derivative (HL,CPTP), was prepared. Structures of all new compounds were characterized and confirmed using analytical and spectroscopic (IR, UV-Vis and 13C&1H NMR) techniques. All complexes have non-electrolytic nature based on molar conductance measurements. TGA wa...

New pharmacologically active complexes were prepared from Pd (II), Fe (III), and Cu (II)ions with 2-amino-6-oxo-3-(piperidinylamidino)-4-(4methoxyphenyl)-6,7-dihydro-pyrano[2,3-d]-5,7thiazol ligand (MPTP). The ligand acted as neutral bidentate with the metals via NH and NH2 groups. FT-IR spectra, CHN-analysis, TGA, UV–Vis, molar conductance and ¹H...

New pharmacologically active complexes were prepared from Pd (II), Fe (III), and Cu (II)ions with 2-amino-6-oxo-3-(piperidinylamidino)-4-(4methoxyphenyl)-6,7-dihydro-pyrano[2,3-d]-5,7thiazol ligand (MPTP). The ligand acted as neutral bidentate with the metals via NH and NH2 groups. FT-IR spectra, CHN-analysis, TGA, UV–Vis, molar conductance and 1H...

Fe-Pd magnetic shape memory alloys are of major importance for microsystem applications due to their magnetically-driven large reversible strains under moderate stresses. In this context, we focus on the synthesis of nanostructured Fe70Pd30 shape memory alloy antidot array thin films with different layer thicknesses in the range from 20 nm to 80 nm...

Two novel complexes for Zn2+ and VO2+ ions, were prepared from tridentate dibasic chelating Schiff base ligand. 1-((3,5-di-tert-butyl-2-hydroxybenzylidene)amino)naphthalen-2-ol-5‑sodium sulfonate (DSHN), was the ligand used in this study. Alternative spectral tools were applied to elucidate structural composition of new compounds. Also, geometry op...

Synthesis for new pyrazolin derivatives, which oriented for coordination with Cr(III) ion then all new synthesizes were characterized with reliable techniques. Octahedral geometry was the only form suggested from bi-negative tetra-dentate mode of bonding within bi-nuclear complexes. Such offering is based on analytical and spectral tools (IR, UV–Vi...

In the last two decades, poultry and animal industries became increasingly interested in using plant‐based feed supplements, herbs and their derivatives to retain or enhance their health and productivity. These health benefits for the host mainly attributed to the secondary plant metabolites, namely polyphenols. Polyphenols are renowned for their a...

Proceeding from the view concerning the environmental safety, the green synthesis approach was implemented in this study to synthesize new Schiff base complexes. All compounds were characterized by spectroscopic, analytical and theoretical techniques. Octahedral configuration was proposed for all complexes except Pd(II) one which has square‐planer...

A facile green synthesis ball milling technique was used to prepare series of oxo-N'-(1-(pyridin-2-yl) ethylidene)-3-(thiazol-2-ylamino)propanehydrazide (H2L) complexes with UO2(II), Co(II), Cu(II), Pd(II) and Zn(II) ions. The configuration of isolated compounds was established based on spectroscopic, analytical as well as conformational techniques...

The unsymmetrical tetradentate ONNO Schiff base 6,6’-((1E,1’E)-((2-methylpropane-1,2-diyl)bis(azanylylidene))bis(methanylylidene))bis(2,4-di-tert-butylphenol) (H2L) was prepared following a slightly modified known condensation reaction. The neutral NiL complex has been synthesized in high yield via [1H2L:1Ni(II)] direct addition. The XRD-measuremen...

In this study, versatile multifunctional Schiff base derivative and its metal complexes were synthesized and characterized by ¹H, ¹³C NMR, UV–vis, IR, CHN analysis, Mass spectra, m.p. and X-ray diffraction. The tetradentate Schiff base H2L was synthesized using a microwave-assisted method. Metal complexes [M = Pd (1), Zn (2), Cu (3), Fe (4), Ni (5)...

A simple green strategy was efficiently used for quantitative solvent-free synthesis of Cd (II) and Zn (II) complexes by using ball milling technique. The produced complexes were illustrated by using various spectroscopic (¹H &¹³C NMR, IR, EDX, TEM, SEM) and analytical techniques. The octahedral geometry was proposed for such diamagnetic complexes...

Nanocomposites are now commonly employed to augment the standard polymeric membrane materials that are used in water treatment processes. In recent years, nanocomposite membranes have greatly attracted the attention of scientists for water treatment applications such as wastewater treatment, water purification, removal of microorganisms, chemical c...