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Cyclodextrin Derivatives as Modulators for Enhanced Drug Delivery from Niosome Membrane: A Fluorescence Correlation Spectroscopy and Isothermal Titration Calorimetry Approach.
Langmuir
January 2025
Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462 066, Madhya Pradesh India.
Designing efficient drug delivery systems for optimum therapeutic outcomes and minimum adverse effects remains a pivotal focus in pharmaceutical research. Understanding the nature of interactions between drugs and drug carriers and the drug-release mechanism are the key aspects for the development of effective delivery systems. This work presents a detailed investigation into the intricate interactions between niosomes and the drug Phenosafranin (PSF), and the subsequent release induced by a variety of cyclodextrins (CDs) employing a multifaceted approach.
View Article and Find Full Text PDFProbing Interparticle Interaction and Ordering in Silica-Pluronic-Based Solutions and Emulsions by Small-Angle Scattering Techniques.
J Phys Chem B
January 2025
Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India.
Introduction of non-DLVO forces by nonionic surfactants brings about fascinating changes in the phase behavior of silica nanosuspensions. We show here that alterations in the interaction and wetting properties of negatively charged silica nanoparticles (Ludox® LS) in the presence of polyethylene oxide-polypropylene oxide-polyethylene oxide-based triblock copolymers called Pluronics lead to the formation of stable o/w Pickering emulsions and interparticle attraction-induced thermoresponsive liquid-liquid phase separations. The results make interesting comparisons with those reported for Ludox® TM nanosuspensions comprising larger silica nanoparticles.
View Article and Find Full Text PDFGram Negative Biofilms: Structural and Functional Responses to Destruction by Antibiotic-Loaded Mixed Polymeric Micelles.
Microorganisms
December 2024
Department of Microbiology, Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Akad. G. Bonchev Street, bl. 26, 1113 Sofia, Bulgaria.
Biofilms are a well-known multifactorial virulence factor with a pivotal role in chronic bacterial infections. Their pathogenicity is determined by the combination of strain-specific mechanisms of virulence and the biofilm extracellular matrix (ECM) protecting the bacteria from the host immune defense and the action of antibacterials. The successful antibiofilm agents should combine antibacterial activity and good biocompatibility with the capacity to penetrate through the ECM.
View Article and Find Full Text PDFInteraction of a Novel Dihydroxy Dibenzoazacrown with Different Surfactants: A Physicochemical and Spectroscopic Investigation.
J Phys Chem B
January 2025
Centre for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700032, India.
Interaction of a novel dihydroxy dibenzoazacrown (HDTC) with various surfactants of different charges, for example, anionic (sodium dodecylsulfate, SDS), cationic (dodecyl trimethylammonium bromide, DTAB), cationic gemini (butanediyl-1,4-bis(dimethylcetylammonium bromide), 16-4-16), ionic liquid (1-hexadecyl-3-methylimidazolium chloride, CMImCl), and nonionic (polyoxyethylene sorbitan monostearate, Tween-60), has been investigated at a widespread range of surfactant concentrations (including premicellar, micellar, and postmicellar regime) in 15% (v/v) EtOH medium at room temperature. Several experimental techniques, viz., tensiometry, UV-vis spectroscopy, and steady-state fluorimetry, are implemented to explicate these interactions.
View Article and Find Full Text PDFMixed Micellization and Density Functional Theory (DFT) Studies on the Molecular Interactions between Gemini and Nonionic Surfactants.
J Oleo Sci
January 2025
Center of Excellence for Advanced Materials Research, King Abdulaziz University.
In the present study, the mixed micellization behavior of gemini surfactant-1, 5-bis (N-hexadecyl- N, N-dimethylammonium) pentane dibromide (G5) with non-ionic surfactant triton X-100 (TX-100) was investigated in the micellar phase by utilizing the conductometric technique. The deviation of ideal critical micelle concentration (cmc*) from experimental critical micelle concentration (cmc) has been estimated using well-known Clint's theory of mixed micelles. The regular solution approximation was used to determine the interaction parameter (β) and found to be negative.
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