Massimo Bonini

University of Florence

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Piero Baglioni

Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca

Paolo Samorı́

Centre National de la Recherche Scientifique

Emiliano Fratini

University of Florence

Francesca Ridi

University of Florence

Debora Berti

University of Florence

Francesca Ridi

University of Florence

Rita Gelli

University of Florence

Thomas Breiner

BASF (Germany)

Leszek Zalewski

BASF (Germany)

Carlos‐Andres Palma

Humboldt-Universität zu Berlin

Cooperative Institutions

University of Florence

Centre National de la Recherche Scientifique

Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase

National Research Council

Université de Strasbourg

Florence (Netherlands)

National Interuniversity Consortium of Materials Science and Technology

Institut de Science et d'Ingénierie Supramoléculaires

Lund University

Ca' Foscari University of Venice

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Surfactant aggregates hosting a photoresponsive amphiphile: structure and photoinduced conformational changes

Soft Matter (2005)

Massimo Bonini Debora Berti J.-M. di Meglio Mats Almgren J. Teixeira

This paper reports the aggregational and photoresponsive properties of aqueous solutions of a cationic bolaform surfactant, where an azobenzene moiety connects two identical hydrophobic chains terminated by quaternary ammonium groups. In analogy to common surfactants, the cationic bolaform molecules form supramolecular assemblies in water, and both interfacial and associative properties can be modulated and controlled by shining the sample with the appropriate wavelength radiation. Binary and ternary (BTHA/SDS/water) systems were investigated as a function of the photosurfactant concentration, sample composition and degree of irradiation. Structural properties of the supramolecular assemblies, obtained by QELS, SANS and cryo-TEM, have been correlated to the isomerization state of the surfactant, inferred from UV-vis spectroscopy.

Azobenzene

Cationic polymerization

Moiety

10.1039/b511544b

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Citations (53)

Sputtering Effects and Water Formation on an Amorphous Silicate Surface

The Journal of Physical Chemistry A (2013)

Dapeng Jing Jiao He Massimo Bonini J. R. Brucato Gianfranco Vidali

We studied the formation of deuterated water on an amorphous silicate surface held at low temperature (10 K < T < 40 K). The surface is first characterized by using Ar+ ion bombardment, and preferential sputtering of oxygen is found. Sputtering creates oxygen vacancies in the surface region that can be filled by deposition of atomic oxygen. The conditions used in the experiment are meant to make it relevant to the study of the initial stages of water formation on dust grains in interstellar space. By changing the D/O ratio of atomic beams of deuterium and oxygen at thermal energy and the temperature of the sample during deposition, we show that the routes to the formation of D2O2 can be untangled and, under certain circumstances, the net yield of D2O2 can be suppressed. The formation efficiency for water and other molecules is then estimated.

Silicate glass

10.1021/jp312816k

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Citations (14)

Preliminary Investigation of Pyrolysis Oil Upgrading Via Emulsification with Biodiesel

European Biomass Conference and Exhibition Proceedings (2011)

David Chiaramonti Andrea Maria Rizzo N. Peruzzi Massimo Bonini Emiliano Fratini

Fast pyrolysis of biomass is a thermochemical process for producing fuels and chemicals from renewable sources that gained the attention of the scientific community during the last decades. Significant progress has been made in the last years towards the lack of availability and consistency of biooil; nevertheless, the chemicophysical properties of crude biooil such as low pH, high viscosity, and immiscibility with diesel fuel still do not easily allow its direct use in power and heat generation. We report the preliminary results of emulsification of biooil with biodiesel in different amounts and with the help of various surfactants and cosurfactant as an upgrading path. The effect of emulsification of small amounts of biooil in biodiesel was investigated. Several commercially available nonionic surfactants were tested, and their effect on the stability of the produced emulsions was monitored.

Renewable Fuels

Pyrolysis oil

Vegetable oil refining

10.5071/19theubce2011-vp2.5.16

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Citations (3)

H-Bonding Tuned Self-Assembly of Phenylene–Thiophene–Thiophene–Phenylene Derivatives at Surfaces: Structural and Electrical Studies

The Journal of Physical Chemistry C (2011)

Massimo Bonini Leszek Zalewski Emanuele Orgiu Thomas Breiner Florian Dötz

Several physicochemical properties of molecular ensembles can be modulated by controlling intermolecular interactions. The design and synthesis of π-conjugated rodlike molecules exposing groups that can undergo H-bondings was exploited to develop materials featuring tunable 2D self-assembly at surfaces, thermal stability, order in micrometer-thick films, and electrical characteristics in organic field-effect transistors (OFETs). As a model system, we have chosen phenylene–thiophene–thiophene–phenylene derivatives with side groups exposing either COOH or COOMe moieties. The structure and dynamics within monolayers at the solid–liquid interface was explored by in-situ scanning tunneling microscopy (STM) experiments. The thermal behavior of the materials was investigated by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The order in micrometer-thick films was studied by grazing-incidence small-angle X-ray scattering (GISAXS), whereas the electrical characteristics of the different systems were studied when self-assembled in thin films in a bottom-gate and bottom-contact field-effect transistor.

Grazing-incidence small-angle scattering

Thermogravimetric analysis

Thermal Stability

Self-assembled monolayer

10.1021/jp201556y

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Citations (15)

Improving charge transport in poly(3‐hexylthiophene) transistors via blending with an alkyl‐substituted phenylene–thiophene–thiophene–phenylene molecule

Journal of Polymer Science Part B Polymer Physics (2012)

Andrea Liscio Massimo Bonini Emanuele Treossi Emanuele Orgiu Marcel Kastler

Abstract A prototypical semiconducting bicomponent system consisting of a conjugated polymer, that is, poly(3‐hexylthiophene) (P3HT), blended with a small thiophene containing conjugated molecule, that is, an alkyl‐substituted bisphenyl‐bithiophene [phenylene–thiophene–thiophene–phenylene (PTTP)], has been used as an electroactive active layer in field‐effect transistors (FETs). The self‐assembly of this bicomponent system at surfaces has been studied at different length scales, from the nanoscale to the macroscale, and compared with the behavior of monocomponent films of PTTP and P3HT. The correlation between morphology and electric properties of the semiconducting material is explored by fabricating prototypes of FETs varying the relative concentrations of the two‐component blend. The maximum charge carrier mobility value, achieved with a few percent of PTTP component, is not simply due to a uniform dispersion of the molecules in the polymer matrix, but rather to the generation of very long percolation paths, whose composition and electrical properties can be tuned with the PTTP concentration. © 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2012

10.1002/polb.23044

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Citations (6)

Bottom-up design of hydrogels through click-chemistry modification of magnetic nanoparticles

Advanced Materials Letters (2019)

Ilaria Meazzini Massimo Bonini Francesca Ridi Piero Baglioni

The paper describes a modular approach based on click chemistry for the surface modification of magnetic oxide nanoparticles and their covalent inclusion within chemical hydrogels. As a proof of concept, we prepared cobalt ferrite nanoparticles and we modified their surfaces through the reaction with molecules bearing a carboxylic function and, alternatively, either an azide or an alkyne moiety. In the second step, the modified nanoparticles were reacted through a Huisgen 1,3-dipolar cycloaddition with a molecule bearing an unsaturated function and either an alkyne or an azide moiety, respectively. Finally, the particles were successfully copolymerized with acrylamide and N,N'-methylenebisacrylamide to obtain a magnetically responsive hydrogel. This approach could be easily extended towards any type of inorganic oxide nanoparticles and their inclusion within any radically co-polymerized hydrogel.

Moiety

Alkyne

10.5185/amlett.2018.2214

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Citations (0)

Functional calcium phosphate composites in nanomedicine

Advances in Colloid and Interface Science (2016)

Francesca Ridi Ilaria Meazzini Benedetta Castroflorio Massimo Bonini Debora Berti

10.1016/j.cis.2016.03.006

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Citations (59)

Liquid Crystals: Liquid Crystal‐Induced Myoblast Alignment (Adv. Healthcare Mater. 3/2019)

Advanced Healthcare Materials (2019)

Daniele Martella Lorenzo Pattelli Camilla Matassini Francesca Ridi Massimo Bonini

Polarized optical microscope image of C2C12 cells cultured on a liquid crystal (LC)-based scaffold. The same image is recorded without and with a red, yellow, or green filter. In article 1801489, Camilla Parmeggiani and co-workers, LC-based scaffolds are able to reflect the molecular organization inside the polymer in a unidirectional alignment of the global cell culture.

C2C12

10.1002/adhm.201970009

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Citations (7)

Alginate crosslinking beyond calcium: Unlocking the potential of a range of divalent cations for fiber formation

International Journal of Biological Macromolecules (2025)

Pietro Tordi Rita Gelli Simone Tamantini Massimo Bonini

Divalent

Calcium alginate

10.1016/j.ijbiomac.2025.141196

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Multiresponsive Ionic Conductive Alginate/Gelatin Organohydrogels with Tunable Functions

Advanced Functional Materials (2024)

Pietro Tordi Adrián Tamayo Yeonsu Jeong Massimo Bonini Paolo Samorı́

Abstract Materials combining stretchability and sensitivity to external stimuli are key for wearable electronics applications to enable the emergence of disruptive technologies in biosensing, health monitoring, photodetection and human motion recognition. Conductive organohydrogels have gained significant attention due to their high sensitivity and cost‐effective preparation. Biopolymers like gelatin and alginate offer unique opportunities for developing responsive wearable devices, owing to their biocompatibility and sensitivity toward environmental factors. Here sustainable bio‐inspired method is presented to produce alginategelatin organohydrogels combining transparency in the visible range, ionic conductivity, high stretchability, and multiresponsiveness. The controlled alginate's crosslinking with various metal cations like Mn 2+ , Cu 2+ , Fe 3+ , and Zr 4+ enables modulating ionic conductivity as well as finely tuning the material's thermal and mechanical properties. These organohydrogels show responsiveness to temperature (from 10 to 50 degrees, with a sensitivity of 0.19 K −1 ), relative humidity (from 20 to 80%, with a sensitivity of 0.022 RH(%) −1 ), and strain (gauge factor >1.6), enabling real‐time monitoring of environmental and physiological parameters. Remarkably, they also exhibit photoresponsivity of 9.2 µA W −1 under visible light, a feature rarely reported in literature. The ease of tuning responsiveness to the chosen stimuli and the high sensitivities open perspectives for applying these materials as wearable stretchable sensors.

Biocompatibility

Gelatin

Wearable Technology

Gauge factor

10.1002/adfm.202410663

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Citations (2)