Pierandrea Lo Nostro

University of Florence

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Barry W. Ninham

Australian National University

Piero Baglioni

Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca

Moira Ambrosi

University of Florence

Luigi Dei

University of Florence

Emiliano Fratini

University of Florence

Duccio Tatini

University of Siena

Laura Fratoni

University of Florence

Daniel A. Allemandi

Universidad Nacional de Córdoba

Rubén H. Manzo

Universidad Nacional de Córdoba

Niccoló Peruzzi

Lund University

Cooperative Institutions

University of Florence

153

Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase

Centre National de la Recherche Scientifique

National Research Council

University of Pisa

Australian National University

National Interuniversity Consortium of Materials Science and Technology

Lund University

Massachusetts Institute of Technology

University of Siena

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Decomposition channels alternative to remote‐charge fragmentations observed in mass spectrometry of alkyltrimethylammonium cations

Journal of Mass Spectrometry (1995)

M. Bambagiotti‐Alberti Silvia A. Coran Fabrizio Benvenuti Pierandrea Lo Nostro Silvia Catinella

Abstract A series of alkyltrimethylammonium cations, generated by fast atom bombardment from 1‐dodecanaminium‐, 1‐tetradecanaminium‐ and 1‐hexadecanaminium‐ N , N , N ‐trimethyl bromides, were studied by high‐energy collisions and comparison with N , N , N ‐trimethyl‐ d 9 labelled analogues. The results show that, together with remote‐charge fragmentation processes, alkyltrimethylammonium cations exhibit further decomposition pathways which may be explained by interaction between the alkyl chain and the methyl group linked to the nitrogen atom. The sharp interruption of remote‐charge fragmentation at the C‐5 atom was observed for all compounds and explained as due to the formation of an energetically favoured six‐membered cyclic structure.

Fragmentation

Fast atom bombardment

Nitrogen atom

10.1002/jms.1190301215

Cite

Citations (7)

Isotopic Effect in Phase Separation of Dioctanoylphosphatidylcholine/Water Micellar Solutions

Langmuir (1994)

Pierandrea Lo Nostro Nadia Stubicar Sow‐Hsin Chen

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIsotopic Effect in Phase Separation of Dioctanoylphosphatidylcholine/Water Micellar SolutionsPierandrea Lo Nostro, Nadia Stubicar, and Sow-Hsin ChenCite this: Langmuir 1994, 10, 4, 1040–1043Publication Date (Print):April 1, 1994Publication History Published online1 May 2002Published inissue 1 April 1994https://pubs.acs.org/doi/10.1021/la00016a015https://doi.org/10.1021/la00016a015research-articleACS PublicationsRequest reuse permissionsArticle Views79Altmetric-Citations15LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts

Separation (statistics)

10.1021/la00016a015

Cite

Citations (14)

Vehiculización de antralina en coageles de n-alquil derivados del ácido ascórbico

Acta Farmacéutica Bonaerense (2003)

Santiago Daniel Palma Rubén H. Manzo Pierandrea Lo Nostro Laura Fratoni Daniel A. Allemandi

Source

Cite

Citations (3)

Specific ion effects in polysaccharide dispersions

Carbohydrate Polymers (2017)

Duccio Tatini Filippo Sarri Pierfrancesco Maltoni Moira Ambrosi Emiliano Carretti

Guar gum

Sodium hyaluronate

Strong electrolyte

10.1016/j.carbpol.2017.05.078

Cite

Citations (20)

Electrostatic forces in electrolytes in outline

Cambridge University Press eBooks (2010)

Barry W. Ninham Pierandrea Lo Nostro

The classical theory of electrolyte solutions starts with the assumption that ionic interactions in solution or between colloid particles are dictated by Coulomb, electrostatic forces alone. An ion is considered to first approximation to have a charge distribution confined to a hard sphere of a given radius. In the 'primitive' model the ions are immersed in water (or another solvent) within which they interact by electrostatic interactions. The solvent is treated as a passive dielectric continuum. The radius of an ion is not always just its crystallographic radius. It is an effective radius that includes one or two water layers of 'hydration'. What occurs in the theory for the free energy of interactions involves the sum of hydrated ion radii besides the Coulomb force. The hydrated ion size is derived as a fitting parameter from comparison of theory with experiments.

Electrostatics

Ionic radius

Electric potential energy

Coulomb's law

10.1017/cbo9780511811531.004

Cite

Citations (2)

Water Absorbency by Wool Fibers: Hofmeister Effect

Biomacromolecules (2002)

Pierandrea Lo Nostro Laura Fratoni Barry W. Ninham Piero Baglioni

Wool is a complex material, composed of cuticle and epicuticle cells, surrounded by a cell membrane complex. Wool fibers absorb moisture from air, and, once immersed in water, they take up considerable amounts of liquid. The water absorbency parameter can be determined from weight gain, according to a standard method, and used to quantify this phenomenon. In this paper we report a study on the water absorbency (or retention) of untreated wool fibers in the presence of aqueous 1 M salt solutions at 29 °C and a relative humidity of either 33% or 56%. The effect of anions was determined by selecting a wide range of different sodium salts, while the effect of cations was checked through some chlorides and nitrates. Our results show a significant specific ion and ion pair "Hofmeister" effects, that change the amount of water absorbed by the fibers. To understand this phenomenon, the water absorbency parameter (Aw) is compared to different physicochemical parameters such as the lyotropic number, free energy of hydration of ions, molar surface tension increment, polarizability, refractive index increment, and molar refractivity. The data indicate that this Hofmeister phenomenon is controlled by dispersion forces that depend on the polarizability of ionic species, their adsorption frequencies, the solvent, and the substrate. These dispersion forces dominate the behavior in concentrated solutions. They are in accord with new developing theories of solutions and molecular interactions in colloidal systems that account for Hofmeister effects.

Hofmeister series

10.1021/bm0255692

Cite

Citations (101)

Nanoassemblies from vitamin C derivatives

Nanotechnology (2007)

Pierandrea Lo Nostro Moira Ambrosi Emiliano Fratini Francesca Ridi Emiliano Carretti

Vitamin C is one of the most effective natural antioxidants. However, due to its poor solubility in non-aqueous environments, its use is restricted to water-based systems. In order to extend its advantages to lipophilic media, vitamin C must be converted into amphiphilic derivatives. Two new vitamin C-based surfactants were synthesized: a bolaform derivative (1,12-diascorbyl dodecanedioate, BOLA12), and a double chain product (2-octyl-dodecanoyl6-0- ascorbic acid, 8ASC10). Once dispersed in water above 0.5% w/w, BOLA12 forms hollow nanotubes that transform into clear micellar solutions on heating. 8ASC10 is poorly soluble in aqueous media, but it dissolves easily in cyclohexane where it forms true organogels. Cryo-TEM, XRD, SAXS, conductivity, viscosity and DSC experiments were performed in order to study the aggregation properties and morphology of these nanoassemblies. (Less)

Aqueous medium

Source

Cite

Citations (2)

Specific anion effects in Artemia salina

Chemosphere (2015)

Pierandrea Lo Nostro Barry W. Ninham Emiliano Carretti Luigi Dei Piero Baglioni

Artemia salina

Thiocyanate

Chaotropic agent

Brine

Brine shrimp

Perchlorate

10.1016/j.chemosphere.2015.04.080

Cite

Citations (13)

Relationships between monolayer and BLM properties of biomembrane components

Colloids and Surfaces (1989)

Pierandrea Lo Nostro Alberto Niccolai Gabriella Gabrielli

Miscibility

10.1016/0166-6622(89)80284-7

Cite

Citations (8)

Electro-Responsive Green Gels for Lower Environmental Impact Shale Gas Extraction

Energy & Fuels (2019)

Filippo Sarri Duccio Tatini Martina Raudino Moira Ambrosi Emiliano Carretti

In this work, carbon black (CB) is added in small amounts (3–10% w/w) to green aqueous dispersions based on sodium oleate, guar gum, sodium hyaluronate, or hydroxypropyl cellulose gels to enhance their stability against mechanical and thermal stresses and to provide electric responsiveness to an external voltage. Rheology, optical microscopy, small angle X-ray scattering, and conductivity measurements are performed to compare the properties of CB-enriched formulations to those of pristine dispersions. Our results demonstrate that even small amounts of CB are able to confer interesting physicochemical properties to these formulations: a remarkable increase in the viscosity of at least 1 order of magnitude is observed for all systems even at high temperature (up to 60 °C) upon CB addition, indicating that carbonaceous particles play a structuring role for the polymeric network. Furthermore, the application of an external voltage of 30 V for 60 min to CB-containing formulations imparts a significant electric responsiveness to the systems, allowing the modification of their rheological behavior. The CB-loaded formulations can be recycled at least three times. All these results suggest that CB can be effectively used as an alternative green additive to enhance the mechanical and thermal stabilities of the formulations and that its addition can be a feasible way to easily tune the properties of viscoelastic materials, thereby avoiding the use of toxic or potentially dangerous chemicals. The possibility of achieving remote control of mechanical and thermal properties of viscoelastic formulations significantly expands the horizon of their potential applications, for example, in the field of shale gas extraction.

Apparent viscosity

Zeta potential

Guar gum

Thermal Stability

10.1021/acs.energyfuels.8b04321

Cite

Citations (9)