Helena Mateos Cuadrado

Helena Mateos Cuadrado
Università degli Studi di Bari Aldo Moro | Università di Bari · Department of Chemistry

Doctor of Philosophy

About

16
Publications
4,286
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337
Citations
Citations since 2016
15 Research Items
333 Citations
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080

Publications

Publications (16)
Article
Full-text available
Active investment in research time in the development and study of novel unconventional antimicrobials is trending for several reasons. First, it is one of the ways which might help to fight antimicrobial resistance and bacterial contamination due to uncontrolled biofilm growth. Second, minimizing harmful environmental outcomes due to the overuse o...
Article
The interaction between diluted phospholipid vesicles (0.3μM - 40μM) and surfactants (around their cmc) have been investigated as model of the phenomena tacking place when envelope viruses are challenged by detergent formulations such has mouthwashes or dishwashing liquids. We have used negatively charged Small Unilamellar Vesicles (SUVs) to simula...
Chapter
This chapter touches on three fundamental concepts of physical chemistry, in general and of nanostructured fluids, in particular, that is diffusion, aggregation and electrokinetics. We will start from a very classical background on diffusion, introduced from a thermodynamic and a statistical point of view. We will then introduce the reader to the r...
Chapter
This chapter is dedicated to the principles that govern colloidal stability. We start by calculating the van der Waals interaction between atoms in vacuum and, then, see how to implement the equations to bigger particles of different shapes, sizes, and materials, introducing, as well, the effect of the solvent. Subsequently, we describe the electro...
Article
Full-text available
The role of extracellular vesicles (EVs) has been completely re-evaluated in the recent decades, and EVs are currently considered to be among the main players in intercellular communication. Beyond their functional aspects, there is strong interest in the development of faster and less expensive isolation protocols that are as reliable for post-iso...
Article
Hypothesis Soluplus® is one of the most widely used amphiphilic copolymers in drug delivery and has been reported to strongly enhance the adsorption of model drugs. However, there is still a limited understanding of its micellar behavior as it responds to the different routes of administration, which involve important changes in concentration. Exp...
Article
Full-text available
Gold nanoparticles (AuNPs), synthesized by ns-pulsed laser ablation in liquid (ns-PLAL) in the absence of any capping agents, are potential model systems to study the interactions with biological structures unencumbered by interference from the presence of stabilizers and capping agents. However, several aspects of the physics behind these AuNPs so...
Article
Full-text available
Microemulsions are thermodynamically stable, transparent, isotropic single-phase mixtures of two immiscible liquids stabilized by surfactants (and possibly other compounds). The assortment of very different microstructures behind such a univocal macroscopic definition is presented together with the experimental approaches to their determination. Th...
Article
Full-text available
Surface interactions with polymers or proteins are extensively studied in a range of industrial and biomedical applications to control surface modification, cleaning, or biofilm formation. In this study we compare surfactant interactions with protein-coated silica surfaces differing in the degree of curvature (macroscopically flat and colloidal nan...
Article
Full-text available
Metal nanoparticles (NPs) made of gold, silver, and platinum have been synthesized by means of pulsed laser ablation in liquid aqueous solution. Independently from the metal nature, all NPs have an average diameter of 10 ± 5 nm. The ζ-potential values are: −62 ± 7 mV for gold, −44 ± 2 mV for silver and −58 ± 3 for platinum. XPS analysis demonstrate...
Article
Full-text available
A major challenge to plant growth and survival is changes in temperature and diminishing water supply. During acute temperature and water stresses, plants often express stress proteins, such as the dehydrins, which areintrinsically disordered hydrophilic proteins. In this paper, we investigated how the dehydrin Lti30 fromArabidopsis thaliana stabil...
Article
This an introductory review on the diffusion NMR (dNMR) as a powerful tool to characterise different types of formulations. Such a technique is nowadays available on most of the NMR instrumentation and the determination of the distribution of components and the microstructure of the system. We start with a description, addressed to the formulators,...
Article
Full-text available
Gel formation by surfactant molecules is generally controlled by thermodynamics rather than kinetics. Mixtures of long-chain alcohols and surfactants are widely used in various cosmetic and pharmaceutical products. The cooling rate used to produce the products is known to be a key parameter to control the rheological properties and the final textur...
Article
Protein-surfactant interactions are the focus of extensive research due to their many applications in food technology and detergent industry. In this work, we investigate the interaction between bovine serum albumin (BSA) and five relevant surfactants to the cleaning industry, which differ in head group charge, namely: sodium alkyl ether sulphate (...
Article
Measurement techniques for detecting surface charge have gained attention in the last few decades due to the importance of this parameter in many scientific and industrial applications. The estimation of macroscopic surface zeta-potential (ζ) is customarily performed via streaming potential measurements. Recently, a simple and cost-effective Malver...
Article
Full-text available
Solar energy conversion in photovoltaics or photocatalysis involves light harvesting, or sensitization, of a semiconductor or catalyst as a first step. Rare elements are frequently used for this purpose, but they are obviously not ideal for large-scale implementation. Great efforts have been made to replace the widely used ruthenium with more abund...

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