Sharbat A.Baker

@azhar.edu.eg

Al-Azhar University faculty of Science Chemistry Department
assistance prof. applied organic chemistry



           

https://researchid.co/sharbatbaker

Sharbat A. Baker a b : Assistant professor of applied organic chemistry
a Chemistry Department, Faculty of Science, University of Bisha, Bisha 61922,
Postal code: 551, Saudi Arabia
E-mail: Samosa@
b Assistant professor of applied organic chemistry faculty of Science, Al-Azhar University (for girls), Yossuf Abbas street,
Nasr city, Cairo, Egypt. Postal code: 11754
E-mail:


Scopus ID: 57188840052

EDUCATION

assistance prof. applied organic chemistry
PHD applied organic chemistry

RESEARCH INTERESTS

organic chemistry - surfactants synthesis and its application - corrosion efficiency - coating

8

Scopus Publications

Scopus Publications


  • Larvicidal evaluation of two novel cationic gemini surfactants against the potential vector of West Nile virus Culex pipiens Linnaeus (Diptera: Culicidae)
    Doaa R. Abdel‐Haleem, Entsar E. Badr, Abdallah M. Samy, and Sharbat A. Baker
    Wiley
    The development of insecticide resistance is a serious consequence of the widespread applications of synthetic insecticides. Recent studies have provided alternatives to currently available insecticides. Here, novel cationic gemini surfactants were synthesized to assess their insecticidal activities using laboratory and field strains larvae of Culex pipiens Linnaeus (Diptera: Culicidae). The efficacy of these surfactants was compared to that of clove oil and spinosad. The two surfactants G1 and G2 showed good insecticidal activities in laboratory strain with LC50 0.013 and 0.054 ppm, respectively, relative to spinosad with LC50 0.027 ppm, 48 h posttreatment. Although spinosad showed high efficiency against lab strain, it exhibited a high resistance ratio (RR) of 15.111 and 13.111 toward the field strain at 24 and 48 h posttreatment, respectively. The two gemini surfactants have a good safety profile and low RR (RR <5), which is close to clove oil; however, G1 and G2 presented high activities with 11,043.230 and 2658.648 folds, respectively, compared to clove oil. The treated Cx. pipiens larvae showed severe morphological malformations after treatment with gemini surfactants. The results of this study are promising in terms of developing novel, effective, affordable, and safe approaches for mosquito control strategies to reduce the risk of arbovirus transmission, which remains a global public health threat.

  • Amphoteric Surfactants: Synthesis, Surface, Antimicrobial Activities, and Corrosion Inhibition for Aluminum in Acidic Solution
    Fatma H. Abdel-Salam, Nabel A. Negm, Marwa M. Mohamed, Sharbat A. Baker, and Aya E. Hawash
    Allerton Press

  • Synthesis, Characterization, Thermodynamic Analysis and Quantum Chemical Approach of Branched N, N′-bis(p-hydroxybenzoyl)-Based Propanediamine and Triethylenetetramine for Carbon Steel Corrosion Inhibition in Hydrochloric Acid Medium
    Mohamed A. Abbas, E. I. Arafa, Mahmoud A. Bedair, Amr S. Ismail, Olfat E. El-Azabawy, Sharbat A. Baker, and Hussin I. Al-Shafey
    Springer Science and Business Media LLC
    AbstractThe influence of branched N, N′-bis(p-hydroxybenzoyl) containing propylenediamine (PDA) and triethylenetetramine (TETA) composites for corrosion inhibition of carbon steel in acidic solution (1 M HCl) was investigated using several quantum chemical, electrochemical impedance spectroscopy and potentiodynamic polarization as electrochemical techniques. The investigated molecules were posteriorly characterized by proton nuclear magnetic resonance (1H NMR) and Fourier transform infrared spectroscopy (FTIR) while the surfaces of carbon steel test coupons were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The obtained results revealed that the two amino compounds, N, N′-bis(p-hydroxybenzoyl) propanediamine (N, N′-HBPDA) and N, N′-bis(p-hydroxybenzoyl) triethylenetetramine (N, N′-HBTETA), have significant efficiency toward steel corrosion attack and its inhibition performance was significantly boosted by increasing concentration of di- and tetramine containing inhibitors. The two inhibitors achieved a maximum corrosion inhibition efficiency of 99.1% as indicated from polarization measurements. The isotherm feature of Langmuir adsorption appeared to be proper factor for associating the experimental gains with an applicable mechanism of inhibition process. The free energy ∆Gads was calculated to be − 27.5, 29.1 kJ/mol based on the adsorption isotherm model, indicating physical adsorption on the carbon steel surface. Further, images of the morphological analysis exhibited various features of attack owing to the aggressive medium and the employed concentration of the inhibitor. These synthesized amines supplied many favorable scores in the fabrication of functional mixed-type inhibitors. The computational studies reveal that N, N′-HBPDA and N, N′-HBTETA molecules could absorb via several lone pairs and π clouds, confirming their ability to be good corrosion inhibitors.



  • Synthesis, surface and biological activities of cationic surfactants based on glycine moiety
    Fatma H. Abdel-Salam and Sharbat A. Baker
    Walter de Gruyter GmbH
    AbstractTwo series of cationic surfactants based on glycine molecule as sulfonate salt of N,N-diethyl glycine fatty esters having a hydrocarbon chain length of C12,C16 and C18 followed by quaternerization with ethyl iodide were synthesized. Their chemical structures were confirmed using IR,1H-NMR, and mass spectroscopy. The surface activity of these amphiphiles has been determined by measurement of their surface tension. Parameters like surface tension (γ), critical micelle concentration (cmc), effectiveness (Πcmc), efficiency (pC20), maximum surface excess (Γmax), minimum surface area (Amin) and Gibbs free energy of the micellization (ΔGmic) and adsorption (ΔGads) have been determined from the measurements obtained by surface tension method. All these surfactants showed much lower CMC values compared to the similar hydrophobic chain length surfactant. All synthesized compounds have been evaluated for their biological activity against bacteria and fungi.

  • Sol–gel entrapment of bromothymol blue (BTB) indicator in the presence of cationic 16E1Q and 16E1QS surfactants
    Issa M. El-Nahhal, Shehata M. Zourab, Fawzi S. Kodeh, Fatma H. Abd el-salam, and Sharbat A. Baker
    Springer Science and Business Media LLC

Publications

Novel synthesized anionic gemini and monomeric surfactants bearing sulphonate group as petro-dispersing/collecting agents: Design, characterization and surface-active properties
Abo-Riya, M.A.
,
Baker, S.A.