Zaheer Ahmad, Farman UllahKha, S. Mahmood, T. Mahmood, A. Shamim
{"title":"Different Approaches for the Synthesis of Zinc Oxide Nanoparticles","authors":"Zaheer Ahmad, Farman UllahKha, S. Mahmood, T. Mahmood, A. Shamim","doi":"10.30538/psrp-ojc2018.0003","DOIUrl":"https://doi.org/10.30538/psrp-ojc2018.0003","url":null,"abstract":"In this work we have described the synthesis of Zinc Oxide nanoparticles through chemical and biological methods. For biological synthesis Aspargillus niger was used. The product obtained was characterized through different analytical techniques like XRD, SEM and EDX. The obtained results were matched with the literature. It was confirmed that the Zinc Oxide nanoparticles can also be prepared from Aspargillus niger.Which may be more ecofriendly and economical compared to other commonly used methods.","PeriodicalId":19563,"journal":{"name":"Open journal of physical chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76854925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Exploiting databases and computer softwares in drug formulation: Mining the treasures","authors":"Hathout Rm, Metwally Aa","doi":"10.17352/ojc.000009","DOIUrl":"https://doi.org/10.17352/ojc.000009","url":null,"abstract":"","PeriodicalId":19563,"journal":{"name":"Open journal of physical chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90471230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Calculating Degree Based Topological Indices of Line Graph of HAC5C6C7[p,q] Nanotube via M-Polynomial","authors":"A. Rehman, W. Khalid","doi":"10.30538/PSRP-OJC2018.0006","DOIUrl":"https://doi.org/10.30538/PSRP-OJC2018.0006","url":null,"abstract":"The application of graph theory in chemical and molecular structure research far exceeds people’s expectations, and it has recently grown exponentially. In the molecular graph, atoms are represented by vertices and bonded by edges. In this report, we study the M-polynomial of line graph ofHAC5C6C7[p, q] and recover many degree-based topological indices from it.","PeriodicalId":19563,"journal":{"name":"Open journal of physical chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78505049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Some Algebraic Polynomials and Topological Indices of Möbius Ladder","authors":"M. A. Tahir, Saba Noreen","doi":"10.30538/PSRP-OJC2018.0005","DOIUrl":"https://doi.org/10.30538/PSRP-OJC2018.0005","url":null,"abstract":". In this paper we aim to compute some Zagreb type polynomials of M¨obius Ladder. Moreover we compute redefined Zagreb indices of M¨obius Ladder.","PeriodicalId":19563,"journal":{"name":"Open journal of physical chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85346166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kevin F Morris, Eugene J Billiot, Fereshteh H Billiot, Kenny B Lipkowitz, William M Southerland, Yayin Fang
{"title":"A Molecular Dynamics Simulation Study of Two Dipeptide Based Molecular Micelles: Effect of Amino Acid Order.","authors":"Kevin F Morris, Eugene J Billiot, Fereshteh H Billiot, Kenny B Lipkowitz, William M Southerland, Yayin Fang","doi":"10.4236/ojpc.2013.31004","DOIUrl":"https://doi.org/10.4236/ojpc.2013.31004","url":null,"abstract":"<p><p>Molecular dynamics (MD) simulations were used to compare the structures of the chiral molecular micelles (MM) poly-(sodium undecyl-(L,L)-leucine-valine) (poly(SULV)) and poly-(sodium undecyl-(L,L)-valine-leucine) (poly (SUVL)). Both MM contained polymerized surfactant monomers tenninated by chiral dipeptide headgroups. The study was undertaken to investigate why poly(SULV) is generally a better chiral selector compared to poly(SUVL) in electrokinetic chromatography separations. When comparing poly(SULV) to poly(SUVL), poly(SULV) had the more conformational flexible dipeptide headgroup and hydrogen bond analyses revealed that the poly(SULV) headgroup conformation allowed a larger number of intramolecular hydrogen bonds to form between monomer chains. In addition, a larger number of water molecules surrounded the chiral centers of the poly(SULV) molecular micelle. Poly(SULV) was also found to have a larger solvent accessible surface area (SASA) than poly(SUVL) and fluctuations in the poly(SULV) SASA during the MD simulation allowed dynamic monomer chain motions expected to be important in chiral recognition to be identified. Finally, approximately 50% of the Na<sup>+</sup> counterions were found in the first three solvation shells surrounding both MM, with the remainder located in the bulk. Overall the MD simulations point to both greater headgroup flexibility and solvent and analyte access to the chiral centers of the dipeptide headgroup as factors contributing to the enhanced chiral selectivity observed with poly(SULV).</p>","PeriodicalId":19563,"journal":{"name":"Open journal of physical chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4236/ojpc.2013.31004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31661902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kevin F Morris, Eugene J Billiot, Fereshteh H Billiot, Kenny B Lipkowitz, William M Southerland, Yayin Fang
{"title":"Investigation of Chiral Molecular Micelles by NMR Spectroscopy and Molecular Dynamics Simulation.","authors":"Kevin F Morris, Eugene J Billiot, Fereshteh H Billiot, Kenny B Lipkowitz, William M Southerland, Yayin Fang","doi":"10.4236/ojpc.2012.24032","DOIUrl":"https://doi.org/10.4236/ojpc.2012.24032","url":null,"abstract":"<p><p>NMR spectroscopy and molecular dynamics (MD) simulation analyses of the chiral molecular micelles poly-(sodium undecyl-(L,L)-leucine-valine) (poly-SULV) and poly-(sodium undecyl-(L,L)- valine-leucine) (poly-(SUVL)) are reported. Both molecular micelles are used as chiral selectors in electrokinetic chromatography and each consists of covalently linked surfactant chains with chiral dipeptide headgroups. To provide experimental support for the structures from MD simulations, NOESY spectra were used to identify protons in close spatial proximity. Results from the NOESY analyses were then compared to radial distribution functions from MD simulations. In addition, the hydrodynamic radii of both molecular micelles were calculated from NMR-derived diffusion coefficients. Corresponding radii from the MD simulations were found to be in agreement with these experimental results. NMR diffusion experiments were also used to measure association constants for polar and non-polar binaphthyl analytes binding to both molecular micelles. Poly(SUVL) was found to bind the non-polar analyte enantiomers more strongly, while the more polar analyte enantiomers interacted more strongly with poly(SULV). MD simulations in tum showed that poly(SUL V) had a more open structure that gave greater access for water molecules to the dipeptide headgroup region.</p>","PeriodicalId":19563,"journal":{"name":"Open journal of physical chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3754904/pdf/nihms-420553.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31695442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}