Article
Chemistry, Physical
Erica M. Pachon Gomez, O. Fernando Silva, Martin Der Ohannesian, Mariana Nunez Fernandez, Rafael Oliveira, Mariana Fernandez
Summary: Gemini surfactants formed by cystine and decanoic acid were studied for their aggregation behavior in the presence of different metallic salts. TEM and SAXS measurements showed a change in morphology of the aggregates in the presence of copper or silver ions. Reduction of copper and oxidation of cystine were observed through EPR and UV-visible spectrophotometry. The mixture of SDDC:CuSO4/10:1 exhibited the most efficient antimicrobial activity against Gram-negative bacteria.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Multidisciplinary
Ala'a F. Eftaiha, Abdussalam K. Qaroush, Ahmad S. Abo-shunnar, Suhad B. Hammad, Khaleel I. Assaf, Feda'a M. Al-Qaisi, Matthew F. Paige
Summary: This study reports on the synthesis and monolayer properties of conventional and gemini surfactants based on nicotinic acid. The results show that the chemical structures of these surfactants significantly affect the behavior of monolayers, leading to different surface patterns. The study also demonstrates the controllability of mixed films by modifying the structure of nicotinic acid surfactants.
Article
Chemistry, Physical
Na Wang, Yuanyuan Zhang, You Li, Yang Liu, Ce Wang, Bo Xu, Li Zhao, Baocai Xu
Summary: This study synthesized a series of cholesteryl-oligopeptide surfactants and found that the presence of a cholesteryl group enhanced their ordered assembly at interfaces. The number and type of amino acids/oligopeptides significantly influenced the interfacial properties of the surfactants. The synergy of multiple hydrogen bonds and strong van der Waals forces inhibited the relaxation processes at the interface and decreased the interfacial viscoelasticity.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Thermodynamics
Xiaoyong Wang, Chen Yang
Summary: Synergistic interactions between anionic amino acid surfactant SMS and cationic gemini surfactant 12-3-12 within mixed micelles were found, with 12-3-12 showing stronger interactions. Addition of sodium bromide resulted in significantly decreased CMC and I1/I-3Micelles values in SMS/DTAB mixed micelles, while changes in SMS/12-3-12 mixed micelles were minimal.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2021)
Article
Chemistry, Physical
Ce Wang, Pingping Zhang, Zhenghong Chen, Yang Liu, Li Zhao, Nan Wang, Baocai Xu
Summary: Amino acid surfactants derived from vegetable oils have diverse properties due to various fatty acyl groups, with structural characteristics such as fatty acyl chain length, number of C=C bonds, and hydroxyl substituent affecting interfacial properties. Longer fatty acyl chains enhance intermolecular interactions, while C=C bonds in oleoyl and inoleoyl chains and hydroxyl groups on ricinoleoyl influence the compactness and viscoelasticity of interfacial films. The findings provide insights into the design and application of N-acyl amino acid surfactants.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Nanoscience & Nanotechnology
Yueming Han, Chaomeng Dai, Yanping Duan, Yaojen Tu, Shuguang Liu, Yalei Zhang
Summary: By studying the photosensitivity, surface properties, and solubilization/release ability of two photoresponsive surfactants, it was found that the gemini surfactant AzoPBT exhibited stronger surface properties and solubilization ability, which can effectively dissolve and release phenanthrene in groundwater. This is of great significance for groundwater remediation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Applied
Wanju Zhang, Yanbo Qu, Weixiang Lv, Yichang Li
Summary: The potential and prospect of cationic/anionic surfactant mixtures in enhanced oil recovery using sulfonate Gemini surfactant and bisquaternary ammonium salt were investigated. The study found that these mixtures exhibited superior interfacial activity and could effectively reduce the interfacial tension at the oil-water interface under certain conditions.
JOURNAL OF SURFACTANTS AND DETERGENTS
(2023)
Article
Chemistry, Physical
Yuanyuan Zhang, You Li, Zhaoming Ran, Na Wang, Aicha Mekkaoui, Ce Wang, Li Zhao, Baocai Xu
Summary: Amino acid surfactants have been increasingly studied due to their diverse molecular structures and properties. This study systematically investigated the interfacial behaviors of amino acid surfactants with different N-methyl and polar, nonpolar, and aromatic α-substituents using interfacial dilational rheological experiments. The results provide a research basis for the development and application of N-acyl amino acid surfactants.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Ajaya Bhattarai, Malik Abdul Rub, Mihalj Posa, Bidyut Saha, Dileep Kumar
Summary: This report focuses on the catalytic impacts of cationic twin-headed and tailed gemini surfactants on the study of glycine and ninhydrin. The experimental results show that the gemini surfactants have a significant influence on the reaction rate, even at low concentrations. The catalytic effect is attributed to hydrophobic and electrostatic interactions between the gemini surfactant molecules and reactive species. The study also examines the effects of other variables on the reaction and records the electrical conductivity of the gemini system using a conductivity instrument.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Martin Pisarcik, Milos Lukac, Josef Jampilek, L'udmila Paskova, Frantisek Bilka, Andrea Bilkova, Ferdinand Devinsky, Jakub Val'ko, Renata Horakova, Jan Hosek, Matej Brezina, Tomas Opravil
Summary: Gold nanoparticles were prepared and stabilized using Gemini surfactants with varying lengths of poly-methylene spacer. The size of the nanoparticles was found to be influenced by the spacer length of the stabilizing surfactants. Short spacer lengths led to aggregation and larger particle clusters, while longer spacer lengths resulted in smaller nanoparticles. The shape of the gold nanoparticles was observed to be spherical and polyhedral. The nanoparticles exhibited positive zeta potential values and their biological activity was found to be dependent on the spacer length of the stabilizing molecules.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Guangyu Zeng, Chuanrong Zhong, Xiangcheng Wang, Xigao He, Enzhe Pu
Summary: A new Gemini hybrid surfactant DFCS was developed to enhance the salt resistance and interface activity of fluoro-nated surfactants. It can be used as a cleanup additive in fracturing and an active agent in water flooding for shale and superlow-permeability sandstone reservoirs. DFCS exhibited lower interface tensions than current fluorinated surfactants at high salinities, showed temperature resistance below 70 degrees Celsius, and had large molecular area and strong spontaneity in micelle formation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Review
Chemistry, Physical
Jonathan Quinson, Sebastian Kunz, Matthias Arenz
Summary: Colloidal syntheses of nanomaterials are beneficial for the study and optimization of unsupported and supported catalysts, especially precious metal nanoparticles. The separation of nanoparticle synthesis from supporting steps allows for deeper knowledge and control of catalyst properties. However, the use of additives or surfactants in most colloidal syntheses can hinder catalytic reactions, requiring surfactant removal and adding complexity to the process. Developing surfactant-free strategies, such as laser synthesis and processing, is a rising field of research that is detailed in this review, with a focus on heterogeneous catalysis and electrocatalysis.
Article
Energy & Fuels
Shuyun Feng, Zhaowen Jiang, Shanfa Tang, Ruizhi Hu, Lijun Jin, Siyao Wang, Rui Wang
Summary: A series of new Gemini surfactants were synthesized and characterized, showing good interfacial activity and low CMC values, promising for oil recovery in low permeability reservoirs. Varying the carbon number of the hydrophobic chain can control the surface activity and viscoelastic properties, helping to increase the oil-water interfacial tension and enhance oil recovery efficiency in reservoirs.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Agricultural Engineering
Yaping Lv, Shangde Sun, Xiaowei Chen
Summary: Novel and green amino acid ionic liquids (AAILs) were developed as eco-friendly catalysts for the glycerolysis of castor oil, leading to the production of green castor oil-based monoacylglycerol (MAG). Among the tested AAILs, [Ch][Arg] exhibited the best catalysis performance with high selectivity and yield for MAG formation. The kinetic analysis of the glycerolysis revealed an activation energy of 59.7 kJ/mol and an average reaction order of 1.69.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Chemistry, Physical
Yue Gu, Ming Zhou, Hongjun Tu
Summary: This study successfully synthesized a series of sulfate Gemini surfactants with different structures using molecular design. The synthesized surfactants exhibited good heat resistance and low Krafft points. The surfactants with different chain lengths and linking groups showed varying surface activity and critical micelle concentration. The influences of linking group and hydrophobic group length on other properties of the surfactants were also analyzed.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Sharmin Sultana, Malik Abdul Rub, Marzia Rahman, Shahed Rana, Mohammad Majibur Rahman, Md Anamul Hoque, Yousef G. Alghamdi, Abdullah M. Asiri
Summary: In this study, the aggregation behaviors of PVA and TTAB in alcohols/diols media were investigated using conductivity measurements. The physico-chemical parameters and thermodynamic properties were determined. The results showed that the CMC values varied in different solvents, indicating the significant influence of solvents on the micelle formation of TTAB + PVA mixture. It was also found that PVA molecules interacted exclusively with TTAB through hydrogen bonding, ion-dipole, and hydrophobic interactions.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Chemical
Md. Anamul Hoque, Shamim Mahbub, Md. Tuhinur R. Joy, Malik Abdul Rub, Shahed Rana, Dileep Kumar, Yousef G. Alghamdi, Abdullah M. Asiri, Mohammed Abdullah Khan
Summary: The micellization behavior of CTAB and BSA mixture in different diols media was studied. The critical micelle concentration (cmc) values of the mixture decreased with increasing temperature and followed the order: cmc(1,5-PD)>cmc(1,2-PrD)>cmc(2,3-BD). The degree of micelle ionization (a) increased with carbon chain length and temperature. The thermodynamic parameters and the contribution of the solvent were also evaluated.
CHEMICAL ENGINEERING COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Naved Azum, Maha Moteb Alotaibi, Maroof Ali, Malik Abdul Rub, Hadi M. Marwani, Khalid A. Alamry, Abdullah M. Asiri
Summary: The current study investigated the influence of an ionic liquid and cationic surfactant on the physicochemical properties of an anaesthetic drug, tetracaine hydrochloride (TCH). Tensiometric and absorption spectroscopic methods were used to analyze the interaction between TCH and the ionic liquid (1-hexadecyl-3-methyl imidazolium chloride, SAIL) and cationic surfactant (cetylpyridinium chloride, CPC). The results showed that TCH exhibited a higher synergistic interaction with SAIL compared to CPC, which was confirmed by UV-visible spectroscopy and the binding constant value.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Polymer Science
Mohammad Asad, Muhammad Nadeem Arshad, Abdullah M. Asiri, Mohammed M. Rahman, Snigdha Kumaran, Mohammed Musthafa Thorakkattil Neerankuzhiyil
Summary: Chitosan-bounded copper (chitosan-Cu) was utilized for the green synthesis of novel ferrocenated spiropyrrolidine hybrids. A one-pot three-component 1,3-dipolar cycloaddition reaction using tyrosine, glycine, and isatin derivatives was employed to form spiropyrrolidines from 1-(4-bromophenyl)-ferrocene-prop-2-en-1-one and azomethine ylides. The synthesized spiropyrrolidines showed good antibacterial activity against Gram-positive and Gram-negative bacterial strains.
Review
Polymer Science
Guravtar Singh Mann, Naved Azum, Anish Khan, Malik Abdul Rub, Md Imtaiyaz Hassan, Kisa Fatima, Abdullah M. Asiri
Summary: Global climate change has already caused various environmental effects and led to a shift in focus towards sustainable materials. Green composites, which combine renewable fibers with polymers, offer a wide range of applications and superior features compared to conventional materials.
Article
Chemistry, Multidisciplinary
Md. Nazrul Islam, Malik Abdul Rub, Maha Moteb Alotaibi, Md. Tuhinur R. Joy, Israt Jahan, Shamim Mahbub, Shahed Rana, Dileep Kumar, M. Alfakeer, Abdullah M. Asiri, Md. Anamul Hoque, Shariff E. Kabir
Summary: Here, the interactions between cetylpyridinium chloride (CPC) and ceftriaxone sodium (CTS) were investigated using conductivity technique. The study assessed the impacts of additive nature, temperature change, and concentration variation on the micellization of CPC + CTS mixture. The analysis revealed that the CMC values increased with the increase in CTS concentration and varied with the type of additive used.
Article
Chemistry, Physical
Md. Rehan Alam, Md. Rafikul Islam, Javed Masood Khan, Ummey Rayhan, Shahed Rana, Dileep Kumar, Anis Ahmad, Md. Anamul Hoque, Shariff E. Kabir
Summary: The study focuses on the phase separation of a mixture of TX-100 and LFH in electrolyte solutions and its potential applications in the pharmaceutical industry. The cloud point temperature of the mixture in different sodium salts solutions was investigated. It was found that the presence of electrolytes decreases the cloud point temperature, with sulfate ion (SO42-) having the most significant effect. The phase separation process of TX-100 and LFH system was determined to be nonspontaneous.
COLLOID AND POLYMER SCIENCE
(2023)
Article
Polymer Science
Aftab Aslam Parwaz Khan, Mallikarjunagouda B. Patil, Laxmibai P. Rathod, Shivalila G. Vader, Pankaj Raizada, Pardeep Singh, Maha M. Alotaibi, Mohammad Omaish Ansari, Anish Khan, Naved Azum, Malik Abdul Rub, Muhammad Nadeem Arshad, Abdullah M. Asiri
Summary: The study assessed the potential of nanocomposite membranes (NCMs) made of sodium alginate and embedded with synthesized zeolitic imidazole framework-8 (ZIF-8) as fillers for separating gaseous mixtures generated by methane reforming. ZIF-8 crystals were synthesized through hydrothermal synthesis, with sizes ranging from 50 to 70 nm. NCMs with 15% filler loading (synthesized ZIF-8) outperformed neat polymer membranes in terms of H-2 permeability and selectivity, achieving a purity of up to 95%. However, NCMs did not perform better than neat polymer membranes in separating gas mixtures. The combination of ZIF-8 and sodium alginate as fillers is a new and worth investigating.
Article
Materials Science, Multidisciplinary
H. Mohit, Sanjay Mavinkere Rangappa, Krittirash Yorseng, Suchart Siengchin, Hadi M. Marwani, Anish Khan, Abdullah M. Asiri
Summary: The effect of chemically treated and untreated water hyacinth/pineapple leaf, titanium carbide nanoparticles, Innegra, and carbon fabric reinforcement on the characteristics of polyester hybrid composites was studied. The chemically treated fibers showed excellent bonding with the fillers and textiles, as observed from various analysis techniques. The use of artificial neural network (ANN) for modeling the material characteristics was also investigated in this study.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Multidisciplinary Sciences
Yousef G. Alghamdi, Malik Abdul Rub, Dileep Kumar
Summary: The influence of double-headed gemini was investigated on the reaction between the amino acid methionine and ninhydrin in CH3COOH-CH3COONa buffer solvent. The surfactant-like effect was observed and explained by a pseudo-phase model of micelles. The impact of temperature, pH, and concentration of ninhydrin and methionine on the reaction was also studied. The CMC of gemini surfactants and the surfactant system with methionine and ninhydrin was evaluated and other parameters such as rates and binding constants were calculated.
ROYAL SOCIETY OPEN SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Md. Rafiul Islam Rony, Javed Masood Khan, Md. Rafikul Islam, K. M. Khairul Alam, Dileep Kumar, Anis Ahmad, Shahed Rana, Md. Anamul Hoque
Summary: This study thoroughly investigated the phase partitioning of Triton X-100 and ceftriaxone sodium trihydrate drug mixture in aqueous solutions of sodium salts. The effect of different sodium salts on the cloudy creation of the mixture was explored, and it was found that the interaction between Triton X-100 and ceftriaxone sodium trihydrate is mainly electrostatic and hydrophobic.
Article
Chemistry, Physical
Mihalj Posa, Ajaya Bhattarai, Javed Masood Khan, Bidyut Saha, Dileep Kumar
Summary: The rates of the title reaction were measured in a double-headed micellar medium using UV-vis single beam spectroscopy. Gemini surfactants showed higher rate constants compared to CTAB, following first- and fractional-order paths in the reactions of Leu and ninhydrin, respectively. The impact of double-headed geminis on the reaction was explained and a pseudo-phase model of micellar activity was employed to interpret the observation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Chemical
Dileep Kumar, Javed Masood Khan, Mihalj Posa, Ajmal Koya Pulikkal, Bidyut Saha, Ajaya Bhattarai
Summary: This study investigates the effect of solutions of double-chained quaternary ammonium gemini surfactants on the rate constant of the ninhydrin and lysine reaction. The results show the impact of different conditions on the rate constant and provide insights into the binding constants and critical micellar concentration.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Physics, Applied
Aftab Aslam Parwaz Khan, Z. Fadil, Pankaj Raizada, Pardeep Singh, Maha Alotaibi, Mohammad Omaish Ansari, Anish Khan, Abdullah M. Asiri, Chaitany Jayprakash Raorane
Summary: A monolayer anthracene-like nanostructure was studied through Monte Carlo simulations to determine its compensation temperature and magnetic hysteresis cycle. The effects of exchange coupling on compensation and transition temperatures were discussed. The study also investigated the magnetic hysteresis cycles and surface of multi-loop hysteresis with respect to strong exchange coupling and temperature parameters. This research has significant implications for multi-state memories and nanotechnology.
Review
Chemistry, Multidisciplinary
Umer Shahzad, Hadi M. Marwani, Mohsin Saeed, Abdullah M. Asiri, Mohammed M. Rahman
Summary: Due to their unique two-dimensional layered microstructure, MXenes are considered promising candidates for addressing energy and environmental issues, thanks to their numerous functionalities on the surface and excellent electrical, thermal, and optical features. Altering the dimensions, structure, surface chemistry, and chemical composition of MXenes can enhance their energy conversion and storage capabilities. Therefore, it is crucial to understand the relationship between structure and property from an applied perspective. This study reviews the synthesis, properties, and potential applications of MXenes and discusses their structural, chemical, optical, mechanical, and thermal properties, as well as their applications in photocatalysis, gas sensing, supercapacitors, electrocatalysis, and environmental remediation. It also highlights the progress and future prospects of MXene-based composites, providing valuable insights for scientists in academia and material sciences.
