Journal of the Mexican Chemical Society最新文献

{"title":"Screening Method Synthesis of AgNPs Using Petroselinum crispum (parsley) Leaf: Spectral Analysis of the Particles and Antibacterial Study","authors":"S. Alshahrani, A. Alameri, R. Zabibah, A. Jalil, Omid Ahmadi, G. Behbudi","doi":"10.29356/jmcs.v66i4.1803","DOIUrl":"https://doi.org/10.29356/jmcs.v66i4.1803","url":null,"abstract":"Abstract. The synthesis and applications of nanomaterials are an excitingand emerging field of scientific research. In this paper, silver nanoparticles (AgNPs) were synthesized using parsley leaf extract via the screening method (autoclave hydrothermal heating, and heater), and their microbial activities were studied. An extract of chopped parsley leaves was prepared. AgNO3 salt with a concentration of 1 mM was used. In every two methods of autoclave hydrothermal heating and heater, 5 mL of the Parsley leaf extract was mixed with 25 mL of silver nitrate salt. By FTIR analysis, the presence of Petroselinum crispum (parsley) leaf extract in NPs was identified. By using a hydrothermal autoclave and heater to synthesize AgNPs at the lowest wavelength, the size of NPs was achieved at 403 nm and 414 nm, respectively. All samples synthesized by different techniques had suitable zeta potential and acceptable stability. By giving the zeta potential of NPs synthesized by autoclave (-14.3 mV), results showed that this method is suitable for the production of AgNPs. Comparing the antibacterial attributes of the synthesized Ag NPs by different techniques (autoclave and heater) on Gram-negative bacteria (E. coli) showed 16±1, and 12±1, respectively.\u0000 \u0000Resumen. La síntesis y las aplicaciones de los nanomateriales son un campo de investigación científica emocionante y emergente. En esta investigación, se sintetizaron nanopartículas de plata (AgNP) utilizando extracto de hoja de perejil a través del método de selección (calentamiento hidrotermal en autoclave y calentador), y se estudiaron sus actividades microbianas. Se preparó un extracto de hojas de perejil picadas. Se utilizó AgNO3 a una concentración de 1 mM y se utilizaron los métodos de calentamiento en autoclave y calentador; se mezclaron 5 mL del extracto de hoja de Perejil con 25 mL de sal de nitrato de plata. Mediante análisis FTIR se identificó la presencia de extracto de hoja de Petroselinum crispum (perejil) en NPs. El tamaño de las NP se logró a 403 nm y 414 nm, con los métodos de calentamiento en autoclave y calentador, respectivamente. Todas las muestras sintetizadas por diferentes técnicas tuvieron un potencial zeta adecuado y una estabilidad aceptable. Al dar el potencial zeta de las NP sintetizadas en autoclave (-14,3 mV), los resultados mostraron que este método es adecuado para la producción de AgNP. La comparación de los atributos antibacterianos de las AgNP sintetizadas por diferentes técnicas (autoclave y calentador) en bacterias Gram-negativas (Escherichia coli) dieron 16±1 y 12±1, respectivamente.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80940535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wavelet Signal Processing Tools for Quantifying and Monitoring the in-vitro Dissolution Profiles of Tenofovir Disoproxil Fumarate and Emtricitabine in Tablets","authors":"E. Dinç, N. Özdemir, Özgür Üstündağ, E. Büker, G. Tilkan, V. D. Hoang","doi":"10.29356/jmcs.v66i4.1790","DOIUrl":"https://doi.org/10.29356/jmcs.v66i4.1790","url":null,"abstract":"Abstract. Wavelet signal processing tools were applied to the UV spectral dataset for the quantification and understanding the in vitro dissolution behaviors of tenofovir disoproxil fumarate (TEN) and emtricitabine (EMT) in commercial tablets with low-cost and short analysis time. Preliminary signal analysis tests were staged to determine the most suitable wavelet family or families to monitor in vitro dissolution profiles and quantify the drugs of interest. Of these, Daubechies (db6), Symlets 3 (sym3), Biorthogonal 1.5 (bior1.5) and Coiflets 5 (coif5) continuous wavelet tools have been found to be optimal as they provide the desired results. Calibration curves obtained by regression analysis of the continuous wavelet signal (dependent variable) on concentration (independent variable) were found to be linear in the range of 4.0-52.0 µg/mL for both drugs. The validity of CWT signal processing tools was tested by analyzing mixtures made in the laboratory. The Quantitation of TEN and EMT by the proposed signal processing tools did not require a pre-separation procedure. They were successfully utilized for the assay and in vitro dissolution monitoring of the two drugs in their combined tablets. Consequently, the presented work provided alternative tools based on wavelet signal processing to traditional derivative spectrophotometry to resolve a two-component mixture without using a priori separation step. \u0000 \u0000Resumen. Las herramientas de transformada continua de wavelets fueron empleadas para el procesamiento de espectros de absorción UV con el fin de lograr la cuantificación y la comprensión del comportamiento de fumarato de disoproxilo de tenofovir (TEN) y de emtricitabina (EMT) en la disolución in vitro de las tabletas comerciales, con bajo costo y corto tiempo de análisis.  Se realizaron pruebas preliminares de análisis de señales para determinar la familia o familias de ondículas más adecuadas para monitorear los perfiles de disolución in vitro y para cuantificar los fármacos de interés. Entre ellos, las herramientas Daubechies (db6), Symlets 3 (sym3), Biorthogonal 1.5 (bior1.5) y Coiflets 5 (coif5) resultaron ser óptimas proporcionando resultados deseados. Funciones de calibración obtenidas mediante el análisis de regresión de señales de ondículas transformadas (variable dependiente) obtenidas para soluciones de calibración (concentración - variable independiente) presentaron buena linealidad en el intervalo de concentraciones 4.0-52.0 µg/mL para ambos fármacos. La validez de procesamiento de señales CWT fue demostrada mediante el análisis de mezclas de conocidas concentraciones, preparadas en el laboratorio. La cuantificación de TEN y EMT no requiere su separación previa. El procedimiento fue empleado en el ensayo de monitoreo de la disolución in vitro de los fármacos y en las tabletas con contenían los dos fármacos. En este trabajo se propone un procedimiento basado en CWT, alternativo respecto a la tradicional espectrofotometría de derivadas p","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78353449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Six-Membered Heterocyclic Boronate Esters. Synthesis and Structural Analysis","authors":"Ariana León-Negrete, Raúl Villamil-Ramos, Paola Sánchez-Portillo, A. González-Hernández, V. Barba","doi":"10.29356/jmcs.v66i4.1718","DOIUrl":"https://doi.org/10.29356/jmcs.v66i4.1718","url":null,"abstract":"Abstract. Nine heterocyclic zwitterionic boronate esters derived from carbonylphenylboronic acids and amino-diols are described. Compounds were prepared by direct condensation reaction between 3- or 4-formyl/acetylphenylboronic acids with 2-amino-2-methyl-1,3-propanediol (1a-1d) or serinol (2-amino-1,3-propanediol) (1e-1h). Compound 2e was obtained by reaction between 4-formylphenylboronic acid and serinol using a solvent mixture methanol/acetone, an aldol condensation reaction was observed. All compounds were characterized by common spectroscopic techniques such as FT-IR, mass spectrometry, and multinuclear 1H, 13C and 11B NMR spectroscopy. 11B NMR spectra showed signals between δ = 1.9 to 7.3 ppm for all compounds, indicating a tetracoordinated environment for the boron atoms in solution. X-ray diffraction analysis showed that boronates are contained in six-membered heterocycles, which have a chair conformation with -OH and -NH3+ substituents in syn disposition. The formation of channels in the crystal lattice that are filled with water and supported by hydrogen bonding interactions is noteworthy.\u0000 \u0000Resumen. En el presente trabajo se describen nueve ésteres de boro zwitteriónicos, derivados de ácidos cabonilfenilborónicos. Los compuestos fueron obtenidos mediante reacciones de condensación entre el ácido 3- o 4- formil/acetilfenilborónico con 2-amino-2-metil propanodiol (1a-1d) o serinol (1e-1h). El compuesto 2e se sintetizó a través del ácido 4-formilfenilborónico y serinol (2-amino-1,3-propanodiol) utilizando una mezcla de disolventes metanol/acetona, dando lugar a una reacción de condensación aldólica. Los compuestos fueron caracterizados por técnicas espectroscópicas como son FT-IR, espectrometría de masas y espectroscopia multinuclear de RMN 1H, 13C y 11B. El espectro RMN de 11B mostró señales anchas entre δ = 1.9 y 7.3 ppm para todos los compuestos, lo cual indica la presencia de átomos de boro tetracoordinados en solución. El análisis por difracción de rayos-X de monocristal mostró la formación de heterociclos de 6 miembros en conformación silla, con una marcada estereoselectividad en donde los grupos -OH y -NH3+ se encuentran en disposición syn. En la red cristalina, se observaron canales ocupados por moléculas de agua y soportados por enlaces de hidrógeno.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88108033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Potential Compounds Interacting in a Specific Potential Site in SARS-CoV-2 Variants, Selected by Molecular Docking","authors":"C. Benítez-Cardoza, Jesús Néstor Ramirez-Torres, J. L. Vique‐Sánchez","doi":"10.29356/jmcs.v66i4.1805","DOIUrl":"https://doi.org/10.29356/jmcs.v66i4.1805","url":null,"abstract":"Abstract. The SARS-CoV-2 virus continues developing variants, and different ways of treatments have been proposed during this COVID-19 pandemic. This study proposes compounds to develop a drug against SARS-CoV-2 variants, by molecular docking using a library of compounds (502530 compounds) directed to interact in the region between the amino acids (Ser477, Lys478, Pro479, Cys480, Asn481, Gly482, Val483, Lys484, Gly485, Phe486, Asn487, Cys488, and Tyr489) in the RBD in S-Protein of SARS-CoV-2, this is a specific potential site in SARS-CoV-2 variants.\u0000We propose ten compounds selected by molecular docking, with a high probability to interact in the specific region in the RBD of SARS-CoV-2 variants (amino acids between 478 and 484), to reduce the interaction between S-protein and ACE2. Also, these compounds have a high probability to be safe in humans, validated by web servers of prediction of ADME and toxicity (PreADMET) to develop a new specific adjuvant antiviral against SARS-CoV-2 variants.\u0000 \u0000Resumen. El virus SARS-CoV-2 continúa desarrollando variantes y se han propuesto diferentes formas de tratamiento durante esta pandemia de COVID-19. Este estudio propone compuestos para desarrollar un fármaco contra las variantes del SARS-CoV-2, mediante simulaciones de acoplamiento molecular (docking) utilizando una quimioteca de compuestos (502530 compuestos) dirigidos a interactuar en la región entre los aminoácidos (Ser477, Lys478, Pro479, Cys480, Asn481, Gly482, Val483, Lys484, Gly485, Phe486, Asn487, Cys488 y Tyr489) en la RBD en la proteína S del SARS-CoV-2, este es un sitio potencial específico en las variantes del SARS-CoV-2.\u0000Proponemos diez compuestos seleccionados por docking, con una alta probabilidad de interactuar en la región específica en la RBD de las variantes del SARS-CoV-2 (aminoácidos entre 478 y 484), para reducir la interacción entre la proteína S y ACE2. Además, estos compuestos tienen una alta probabilidad de ser seguros en humanos, validados por servidores web de predicción de ADME y toxicidad (PreADMET) para desarrollar un nuevo antiviral adyuvante específico contra variantes del SARS-CoV-2.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89634594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Docking Based Identification of Bioactive Diosmin as Potential Multi-Targeted Anti SARS-Cov-2 Agent","authors":"D. Panigrahi, B. Behera, S. Sahu","doi":"10.29356/jmcs.v66i3.1683","DOIUrl":"https://doi.org/10.29356/jmcs.v66i3.1683","url":null,"abstract":"Abstract. The pandemic COVID-19, caused by the organism severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) belongs to the family Coronoviridae has become a serious global healthcare crisis.   The biggest demand of the present time is to develop efficacious medication for the treatment of SARS-CoV-2. In the present study, we performed the interaction of 50 flavonoids selected from the Pubchem database, with five efficacious protein targets for SARS-CoV-2: main protease (Mpro), spike glycoprotein-receptor binding domain (SGp-RBD), RNA-dependent RNA polymerase (RdRp), angiotensin converting enzyme-2 (ACE-2) and non-structural protein15 (NSP15, an endonuclease). All the work involve in the present study was accomplished by using Maestro 12.4 (Schrodinger Suite) to obtain the docking scores and ADME-T study result of selected ligands with the five effective target proteins of SARS-CoV-2. Molecular docking-based results indicated that diosmin has the most favorable docking scores -10.16, -11.52, -9.75, -11.25 and -10.25 kcal/mol for the Mpro, SGp-RBD, ACE-2, RdRp and NSP-15 protein targets and had acceptable drug suitability as a therapeutic agent against COVID-19. The structure of this compound can be further useful to medicinal chemists, pharmacologists, and clinicians for efficiently discovering or developing effective drugs to cure COVID-19.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79560994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Kinetic and Mechanistic Study of Oxidative Degradation of 2-Aminophenol in Aqueous Alkaline Medium and Antimicrobial Study of Degradation Product 2-Aminophenoxazin-3-One","authors":"A. Goel, M. Rani","doi":"10.29356/jmcs.v66i3.1756","DOIUrl":"https://doi.org/10.29356/jmcs.v66i3.1756","url":null,"abstract":"Abstract. The oxidation reaction of a model environmental pollutant, 2-AP to 2-aminophenoxazin-3-one initiated by hexacyanoferrate (III) ion, abbreviated (HCF (III), has been investigated at 25 °C. The 2-aminophenoxazin-3-one (2-AHP) acts as a good antibacterial agent. The experimental data, within the pH range 7.5 to 10 were analyzed. The oxidation of 2-aminophenol was followed kinetic- spectrophotometrically and the initial rates were determined using plane mirror method. The effect of temperature variation on the overall rates was studied at pH = 9 within the range 298-313 K and the corresponding activation energy were evaluated. The rate constant, activation energy, enthalpy, entropy, pre-exponential factor and free energy are: kobs = 11.7 x 10-5 min-1, Ea# = 8.24 kcal/mol, ΔH# = 7.63 kcal/mol, ΔS# = -31.5 e.u, A = 23.7 L mol-1 s-1 and ΔF# = 17.2 kcal /mol. The oxidized product 2-aminophenoxazin-3-one was identified by the FTIR and GC-MS methods of analysis. Antimicrobial activity study of product (2-AHP) with gram positive (S. aureus) and gram-negative bacteria (E. coli) by Agar well diffusion method has been made. The study reveals that antibacterial activity of 2-AHP is more for Staphylococcus aureus (gram positive bacteria) as compared to E. coli (gram negative) bacteria. Thus, the present method is simple, efficient and environmentally friendly for the degradation of 2-aminophenol.\u0000 \u0000Resumen. Se investigó a reacción de oxidación de un contaminante ambiental modelo, el 2-aminofenol a 2-aminofenoxazin-3-ona (2-AHP) iniciada por el ion hexacianoferrato (III), (HCF (III), a 25 °C, compuesto que actúa como un buen agente antibacteriano. Se analizaron los datos experimentales, dentro del rango de pH de 7,5 a 10. La cinética de la oxidación del 2-aminofenol se siguió espectrofotométricamente y la rapidez inicial se determinó utilizando el método de espejo plano. Se estudió el efecto de la variación de la temperatura sobre rapidez de reacción global a pH = 9, dentro del rango de temperatura de 298 a 313 K y se evaluó la energía de activación correspondiente. La constante de rapidez, la energía de activación, la entalpía, la entropía, el factor preexponencial y la energía libre para esta reacción son: kobs = 11,7 x 10-5 min-1, Ea#= 8,24 kcal/mol, ΔH# = 7,63 kcal/mol, ΔS# = -31,5 e.u, A = 23,7 l/mol/s y ΔF# = 17,2 kcal/mol. El producto oxidado, el 2-AHP, fue identificado por los métodos de análisis FTIR y GC-MS. Su actividad antimicrobiana fue evaluada frente a S. aureus (gram positivo) y bacterias gram negativas (E. coli) mediante el método de difusión en pozos de agar. El estudio revela que la actividad antibacteriana de 2-AHP es mayor para S. aureus en comparación con la bacteria E. coli. Por tanto, el presente método es simple, eficiente y respetuoso con el medio ambiente para la degradación de 2-aminofenol.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75632833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the Pro-oxidant Activity of Curcumin in Lipid Media: A Theoretical Study","authors":"M. E. Medina, Á. Trigos","doi":"10.29356/jmcs.v66i3.1727","DOIUrl":"https://doi.org/10.29356/jmcs.v66i3.1727","url":null,"abstract":"Abstract. In the scientific literature can be found experimental evidence on the pro-oxidant capacity of curcumin through its photosensitizer property; it has been related to biological activities such as the antibacterial and antitumor observed in this molecule; however, the pro-oxidant evidence, little is known about the reaction mechanism involved in the photosensitizing property of curcumin. Thus, it was carried out a study on the photosensitizer capacity of curcumin in lipid media employs the density functional theory. The thermodynamic results showed the remarkable capacity of curcumin to reduce itself through the single electron transfer mechanisms. The kinetic results showed that mechanism type II is the main mechanism, and it showed a total reaction rate constant calculated of 1.69 x 1010 M-1 s-1 on the photosensitizer capacity of curcumin in lipid media. The reactions related to the mechanism type I was not feasible; hence, these reactions were not contributed to the photosensitizer capacity of curcumin in lipid media. Finally, these results support the idea that the curcumin in lipid media is a pro-oxidant molecule capable of generating the 1O2 molecule and, consequently, could cause oxidative damage through the photooxidative reactions.\u0000 \u0000Resumen. En la literatura se puede encontrar evidencia experimental sobre la capacidad pro-oxidante de la curcumina a traves de su propiedad fotosensibilizadora, esta propiedad se ha relacionado con la actividad antibacteriana y antitumoral observada en esta molécula; a pesar de la evidencia experimental, poco se conoce sobre el mecanismo de reacción involucrado en la propiedad fotosensibilizadora de la curcumina. De acuerdo con lo anterior, se llevó a cabo el estudio de la capacidad fotosensibilizadora de curcumina en medio lipídico, empleando la teoría de funcionales de la densidad. Los resultados termodinámicos mostraron la extraordinaria capacidad de la curcumina para reducirse a través de reacciones de transferencia electrónica. Los resultados cinéticos mostraron que el mecanismo tipo II es el más importante en la capacidad fotosensibilizadora de la curcumina en medio lipídico, mostrando una constante de velocidad de 1.69 x 1010 M-1 s-1. La reacción relacionada con el mecanismo tipo I no se lleva a cabo; por lo tanto, estas reacciones no contribuyen en la capacidad fotosensibilizadora de la curcumina en medio lipídico. Finalmente, estos resultados apoyan la idea de que la curcumina en medio lipídico es una molécula prooxidante capaz de inducir el estrés oxidativo por la generación de la molécula de 1O2 y de esta forma, generar daño oxidativo a estructuras celulares importantes a través de reacciones de fotooxidación.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80618746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative Effect of Adsorption and Photodegradation on Benzene and Naphthalene Using Bismuth Oxide Modify Graphene Oxide","authors":"José M. Osorio Jiménez, R. López González, Cinthia García Mendoza, I. Cuauhtémoc-López, M. A. Alvarez Lemus, Getsemani Morales Mendoza","doi":"10.29356/jmcs.v66i3.1611","DOIUrl":"https://doi.org/10.29356/jmcs.v66i3.1611","url":null,"abstract":"Abstract. The removal of pollutants derived from oil industry takes relevance in industrial zones moreover if some of them has been reported as carcinogenic and detrimental to public health at low concentrations. In this research was explored the synergic effect between adsorption of the hydrocarbon’s benzene and naphthalene and its photodegradation under visible irradiation. The capabilities of system graphene oxide (GO) - bismuth oxide (Bi2O3) were evaluated both as adsorbent and active semiconductor for the removal of benzene and naphthalene in aqueous media. The content ratio between materials was changed to evaluate the effect on its properties. The X-ray diffraction indicates the stability of α-bismuth oxide which is known as an efficient photocatalyst meanwhile Raman spectroscopy indicates the successfully obtaining of detached layer of graphene oxide. The energy band gap of the most photoactive composites materials indicates an increase comparing with bare GO, this increase is favorable to decrease the high electron transfer in its surface. The removal efficiency of benzene and naphthalene indicate the predominance of the adsorption process; the highest elimination was for naphthalene removing 73 percent of the pollutant in aqueous media. The results indicate the system as a promising alternative for the elimination of contaminants derived from the hydrocarbons industry when present in aqueous media.  \u0000 \u0000Resumen. La remoción de contaminantes derivados de industria del petróleo toma relevancia in zonas industriales sobre todo porque varios de ellos han sido reportados como cancerígenos y en general perjudiciales para la salud pública aún en bajas concentraciones. En esta investigación se explora el efecto sinérgico entre la adsorción de los hidrocarburos benceno y naftaleno y su fotodegradación bajo irradiación visible. Se evaluó la capacidad del sistema óxido de grafeno (GO)-óxido de bismuto (Bi2O3) como adsorbente y semiconductor activo para la eliminación de benceno y naftaleno en medio acuoso. Se cambió la relación de contenido entre materiales propuestos para evaluar el efecto sobre sus propiedades fisicoquímicas. De los resultados, la difracción de rayos X indica la estabilidad del α- óxido de bismuto, conocido como un fotocatalizador eficiente, mientras que por espectroscopia Raman se indica la obtención de capa separadas de óxido de grafeno. La energía de banda prohibida de los materiales fotoactivos indica un aumento en comparación con el GO puro, este aumento se considera favorable para disminuir la alta transferencia de electrones en su superficie. La eficiencia en la remoción de benceno y naftaleno indica el predominio del proceso de adsorción; la mayor eliminación fue para el naftaleno eliminándose el 73 por ciento del contaminante en medio acuoso. Los resultados señalan al sistema como una alternativa prometedora para la eliminación de contaminantes derivados de la industria de los hidrocarburos en medio acuoso.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84865796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of Ferrocene Based Schiff Bases Possessing Different Metal Ion Sensing Aptitude and Partaking Antimicrobial Activity","authors":"S. Dhasarathan, Selvaraj Shunmugaperumal, Kamatchi Selvaraj P","doi":"10.29356/jmcs.v66i3.1677","DOIUrl":"https://doi.org/10.29356/jmcs.v66i3.1677","url":null,"abstract":"Abstract. Schiff bases comprised of highly reactive ferrocene derivatives and normal aromatic moiety have been prepared successfully. Spectral variations noticed in the spectra of newly synthesized receptors for the addition of different metal ions discloses the multi metal ion sensing ability of the prepared sensors. Harmonization of Cu2+ ions with receptor originate as MLCT band in the visible region. Shrewdness made from the data obtained from cyclic voltammetry studies give an idea about the concentration of metal ions needed for effective sensing. In vitro antimicrobial studies and H- bond energy calculation for the interaction between the above sensory materials and proteins of selected microorganisms using molecular docking studies disclosures the antifungal activity of newly prepared materials.\u0000 \u0000Resumen. Bases de Schiff derivadas de grupos ferrocenilos altamente reactivos y grupos aromáticas fueron preparadas exitosamente. La habilidad de los sistemas como sensores para detectar diversos iones metálicos se vió en la variación de las características observadas en sus espectors. La interacción de iones Cu2+ con el receptor produce una banda MLCT en la región visible. Los estudios de voltametría cíclica indican la concentración de los iones metálicos necesaria para una detección eficiente. Estudios antimicrobianos in vitro y cálculos de la energía de puentes de hidrógeno para las interacciones entre los sensores (bases de Schiff) y las proteínas de microorganismos selectos, basados en estudios de acoplamiento molecular, confirman la actividad antifúngica de los nuevos compuestos reportados.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74660789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microwave Assisted, Silica Gel Mediated, Solvent Free, Michael-Addition of Aryl Methyl Ketones with Chalcones for the Synthesis of 1,3,5-triarylpentane-1,5-diones","authors":"Chithiravel Rengasamy, Rajaguru Kandasamy, Muthusubramanian Shanmugam","doi":"10.29356/jmcs.v66i3.1706","DOIUrl":"https://doi.org/10.29356/jmcs.v66i3.1706","url":null,"abstract":"Abstract. A series of symmetrical/unsymmetrical 1,3,5-Triarylpentane-1,5-diketone derivatives have been prudently synthesized via direct Michael addition of Chalocones with Aryl Methyl Ketones using microwave irradiation using Silica gel without any solvents. This method affords several advantages such as operational simplicity, short reaction time and easy work up by recrystallization and excellent yields.\u0000 \u0000Resumen. Se prepararó una serie de derivados simétricos y asimétricos de 1,3,5-triaril-1,5-pentanodiona, a través de la adición de Michael entre arilmetilcetonas y chalconas empelando microondas y gel de sílice con y sin disolvente. El método ofrece ventajas como simplicidad operativa, reducción de los tiempos de reacción y fácil procesamiento por recristaización, así como excelentes rendimientos.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76372611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}