Full Text Journal Articles by
Author Despina Fragouli

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Solar-Driven Freshwater Generation from Seawater and Atmospheric Moisture Enabled by a Hydrophilic Photothermal Foam.

Siew-Leng Loo, Lía Vásquez, Uttam C Paul, Laura Campagnolo, Athanassia Athanassiou, Despina Fragouli,

The accelerated increase in freshwater demand, particularly among populations displaced in remote locations where conventional water sources and the infrastructure required to produce potable water may be completely absent, highlights the urgent need in creating additional freshwater supply from untapped alternative sources via energy-efficient solutions. Herein, we present a hydrophilic ... Read more >>

ACS Appl Mater Interfaces (ACS applied materials & interfaces)
[2020, 12(9):10307-10316]

Cited: 0 times

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Expanded Graphite-Polyurethane Foams for Water-Oil Filtration.

Lía Vásquez, Laura Campagnolo, Athanassia Athanassiou, Despina Fragouli,

Herein, expanded graphite is successfully combined with waterborne polyurethane to develop porous foams with underwater oleophobic properties for the separation of surfactant-free, oil-in-water mixtures and emulsions. To obtain foams with different pore sizes and therefore with different performances in the oil-water filtration process, two solvent-free fabrication processes are adopted. In ... Read more >>

ACS Appl Mater Interfaces (ACS applied materials & interfaces)
[2019, 11(33):30207-30217]

Cited: 2 times

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Poly(furfuryl alcohol)-Polycaprolactone Blends.

Gabriele Nanni, José A Heredia-Guerrero, Uttam C Paul, Silvia Dante, Gianvito Caputo, Claudio Canale, Athanassia Athanassiou, Despina Fragouli, Ilker S Bayer,

Poly(furfuryl alcohol) (PFA) is a bioresin synthesized from furfuryl alcohol (FA) that is derived from renewable saccharide-rich biomass. In this study, we compounded this bioresin with polycaprolactone (PCL) for the first time, introducing new functional polymer blends. Although PCL is biodegradable, its production relies on petroleum precursors such as cyclohexanone ... Read more >>

(Polymers)
[2019, 11(6):]

Cited: 1 time

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Photochromic Paper Indicators for Acidic Food Spoilage Detection.

Maria E Genovese, Sinoj Abraham, Gianvito Caputo, Gabriele Nanni, Surjith K Kumaran, Carlo D Montemagno, Athanassia Athanassiou, Despina Fragouli,

A photoresponsive microstructured composite is fabricated through the impregnation of cellulosic filter paper (FP) with a spiropyran-modified acrylic polymer. The polymer enwraps uniformly each individual cellulose fiber, increases the thermal stability of cellulose, and ensures the preservation of the composite functionalities even upon removal of the surface layers through mechanical ... Read more >>

(ACS omega)
[2018, 3(10):13484-13493]

Cited: 0 times

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Antibacterial Melamine Foams Decorated with in Situ Synthesized Silver Nanoparticles.

Javier Pinto, Davide Magrì, Paola Valentini, Francisco Palazon, José A Heredia-Guerrero, Simone Lauciello, Suset Barroso-Solares, Luca Ceseracciu, Pier Paolo Pompa, Athanassia Athanassiou, Despina Fragouli,

A new and straightforward single-step route to decorate melamine foams with silver nanoparticles (ME/Ag) is proposed. Uniform coatings of silver nanoparticles with diameters less than 10 nm are formed in situ directly on the struts surface of the foams, after their dipping in an AgNO3 solution. We prove that the ... Read more >>

ACS Appl Mater Interfaces (ACS applied materials & interfaces)
[2018, 10(18):16095-16104]

Cited: 4 times

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Light Responsive Silk Nanofibers: An Optochemical Platform for Environmental Applications.

Maria E Genovese, Gianvito Caputo, Gabriele Nanni, Chiara Setti, Matteo Bustreo, Giovanni Perotto, Athanassia Athanassiou, Despina Fragouli,

Photochromic spiropyran-doped silk fibroin poly(ethylene oxide) nanofibers which combine the attractive properties and biocompatibility of silk with the photocontrollable and reversible optical, mechanical, and chemical response of the spiropyran dopants are herein presented. As proved, the reversible variation of the absorption and emission signals of the mats and of their ... Read more >>

ACS Appl Mater Interfaces (ACS applied materials & interfaces)
[2017, 9(46):40707-40715]

Cited: 1 time

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Titanate Fibroin Nanocomposites: A Novel Approach for the Removal of Heavy-Metal Ions from water.

Davide Magrì, Gianvito Caputo, Giovanni Perotto, Alice Scarpellini, Elena Colusso, Filippo Drago, Alessandro Martucci, Athanassia Athanassiou, Despina Fragouli,

In this study, we report the fabrication of nanocomposites made of titanate nanosheets immobilized in a solid matrix of regenerated silk fibroin as novel heavy-metal-ion removal systems. The capacity of these nanocomposite films to remove lead, mercury, and copper cations from water was investigated, and as shown by the elemental ... Read more >>

ACS Appl Mater Interfaces (ACS applied materials & interfaces)
[2018, 10(1):651-659]

Cited: 0 times

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Surface modification of polymeric foams for oil spills remediation.

Javier Pinto, Athanassia Athanassiou, Despina Fragouli,

In the last decade, a continuous increasing research activity is focused on the surface functionalization of polymeric porous materials for the efficient removal of oil contaminants from water. This work reviews the most significant recent studies on the functionalization of polyurethane and melamine foams, materials commonly reported for oil-water separation ... Read more >>

J. Environ. Manage. (Journal of environmental management)
[2018, 206:872-889]

Cited: 5 times

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One-Pot Hybrid SnO2 /Poly(methyl methacrylate) Nanocomposite Formation through Pulsed Laser Irradiation.

Gianvito Caputo, Alice Scarpellini, Francisco Palazon, Athanassia Athanassiou, Despina Fragouli,

The localized in situ formation of tin dioxide (SnO2 ) nanoparticles embedded in poly(methyl methacrylate) (PMMA) films is presented. This is achieved by the photoinduced conversion of the tin acetate precursor included in polymeric films, through controlled UV or visible pulsed laser irradiation at λ=355 and 532 nm, respectively. The evolution of ... Read more >>

Chemphyschem (Chemphyschem : a European journal of chemical physics and physical chemistry)
[2017, 18(12):1635-1641]

Cited: 0 times

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Oil spill recovery: Graphene heaters absorb faster.

Despina Fragouli, Athanassia Athanassiou,

Nat Nanotechnol (Nature nanotechnology)
[2017, 12(5):406-407]

Cited: 2 times

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Correction to "Spontaneous Formation of Photochromic Coatings Made of Reversible Microfibrils and Nanofibrils on an Elastomer Substrate".

Reinier Oropesa-Nuñez, Despina Fragouli, Francesca Pignatelli, Alice Scarpellini, Efisio Gigliotti, Elena Samoylova, Athanassia Athanassiou,

Langmuir (Langmuir : the ACS journal of surfaces and colloids)
[2015, 31(27):7695]

Cited: 0 times

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Elastomeric Nanocomposite Foams for the Removal of Heavy Metal Ions from Water.

Asmita A Chavan, Hongbo Li, Alice Scarpellini, Sergio Marras, Liberato Manna, Athanassia Athanassiou, Despina Fragouli,

We report the fabrication and utilization of elastomeric polymer nanocomposite foams for the efficient removal of Pb2+ and Hg2+ heavy metal ions from polluted water. The polydimethylsiloxane (PDMS) foams are properly modified in order to become hydrophilic and allow the polluted water to penetrate in their volume. The ZnSe colloidal ... Read more >>

ACS Appl Mater Interfaces (ACS applied materials & interfaces)
[2015, 7(27):14778-14784]

Cited: 6 times

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Spontaneous formation of photochromic coatings made of reversible microfibrils and nanofibrils on an elastomer substrate.

Reinier Oropesa-Nuñez, Despina Fragouli, Francesca Pignatelli, Alice Scarpellini, Efisio Gigliotti, Elena Samoylova, Athanassia Athanassiou,

We report the spontaneous formation of photochromic microcrystalline and nanocrystalline fibrils forming dense coatings of cactuslike supramolecular structures on the surface of a soft poly(dimethylsiloxane) (PDMS) elastomer. The initial deposition of the photochromic molecules of diarylethenes on the elastomer is done by dip adsorption, a process that permits the homogeneous ... Read more >>

Langmuir (Langmuir : the ACS journal of surfaces and colloids)
[2014, 30(43):13058-13064]

Cited: 2 times

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Polymeric films with electric and magnetic anisotropy due to magnetically assembled functional nanofibers.

Despina Fragouli, Arindam Das, Claudia Innocenti, Yogita Guttikonda, Syed Rahman, Lei Liu, Vincenzo Caramia, Constantine M Megaridis, Athanassia Athanassiou,

We demonstrate the fabrication of free-standing polymeric nanocomposite films, which present magnetic and electrically conductive anisotropic properties. Magnetically functionalized carbon nanofibers are dispersed in a polymeric solution and, upon casting under a weak external magnetic field, are easily oriented and permanently assembled in a head-to-tail orientation in the polymer film ... Read more >>

ACS Appl Mater Interfaces (ACS applied materials & interfaces)
[2014, 6(6):4535-4541]

Cited: 5 times

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Nanocomposite pattern-mediated magnetic interactions for localized deposition of nanomaterials.

Despina Fragouli, Bruno Torre, Francesca Villafiorita-Monteleone, Athanasia Kostopoulou, Gabriele Nanni, Andrea Falqui, Alberto Casu, Alexandros Lappas, Roberto Cingolani, Athanassia Athanassiou,

We present a method to create, align, and locate magnetic wires throughout and on the surface of patterned polymer matrices, following the magnetophoretic transport and self-assembly of ferromagnetic nanoparticles under a static magnetic field during laser photopolymerization of monomer/nanoparticle casted solutions. The resulting films have the ability to attract and ... Read more >>

ACS Appl Mater Interfaces (ACS applied materials & interfaces)
[2013, 5(15):7253-7257]

Cited: 1 time

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Formation and microscopic investigation of iron oxide aligned nanowires into polymeric nanocomposite films.

Despina Fragouli, Bruno Torre, Giovanni Bertoni, Raffaella Buonsanti, Roberto Cingolani, Athanassia Athanassiou,

We present a microscopic investigation of nanocomposite films of iron oxide (γ-Fe(2)O(3)) magnetic nanowires (NWs) aligned into polymers, formed upon evaporation of solutions of acrylate polymer/magnetic nanoparticles under magnetic field (MF). The field causes the assembly of the γ-Fe(2)O(3) nanoparticles along the direction of the MF lines, resulting in magnetic ... Read more >>

Microsc. Res. Tech. (Microscopy research and technique)
[2010, 73(10):952-958]

Cited: 3 times

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Light-controlled directional liquid drop movement on TiO2 nanorods-based nanocomposite photopatterns.

Francesca Villafiorita Monteleone, Gianvito Caputo, Claudio Canale, P Davide Cozzoli, Roberto Cingolani, Despina Fragouli, Athanassia Athanassiou,

Patterned polymeric coatings enriched with colloidal TiO(2) nanorods and prepared by photopolymerization are found to exhibit a remarkable increase in their water wettability when irradiated with UV laser light. The effect can be completely reversed using successive storage in vacuum and dark ambient environment. By exploiting the enhancement of the ... Read more >>

Langmuir (Langmuir : the ACS journal of surfaces and colloids)
[2010, 26(23):18557-18563]

Cited: 4 times

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Dynamical formation of spatially localized arrays of aligned nanowires in plastic films with magnetic anisotropy.

Despina Fragouli, Raffaella Buonsanti, Giovanni Bertoni, Claudio Sangregorio, Claudia Innocenti, Andrea Falqui, Dante Gatteschi, Pantaleo Davide Cozzoli, Athanassia Athanassiou, Roberto Cingolani,

We present a simple technique for magnetic-field-induced formation, assembling, and positioning of magnetic nanowires in a polymer film. Starting from a polymer/iron oxide nanoparticle casted solution that is allowed to dry along with the application of a weak magnetic field, nanocomposite films incorporating aligned nanocrystal-built nanowire arrays are obtained. The ... Read more >>

ACS Nano (ACS nano)
[2010, 4(4):1873-1878]

Cited: 11 times

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The effect of polymer matrices in the in-situ CdS formation under UV irradiation of precursor-polymer films.

Despina Fragouli, Anna Maria Laera, Gianvito Caputo, Vincenzo Resta, Pier Paolo Pompa, Leander Tapfer, Roberto Cingolani, Athanassia Athanassiou,

Polymer films embedding cadmium thiolate precursors have been irradiated with ultraviolet laser pulses resulting in the formation of cadmium sulfide crystalline nanoparticles through a macroscopically non-destructive procedure for the host matrix. Controlling the number of the incident laser pulses, the gradual increase of the size of the nanoparticles is accomplished, ... Read more >>

J Nanosci Nanotechnol (Journal of nanoscience and nanotechnology)
[2010, 10(2):1267-1272]

Cited: 3 times

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Imaging photoelectron transmission through self-assembled monolayers: the work-function of alkanethiols coated gold.

Despina Fragouli, Theofanis N Kitsopoulos, Letizia Chiodo, Fabio Della Sala, Roberto Cingolani, Supratim G Ray, Ron Naaman,

In this paper, we present a new approach for studying the electronic properties of self-assembled monolayers and their interaction with a conductive substrate, the low-energy photoelectron imaging spectroscopy (LEPIS). LEPIS relies on imaging of photoelectrons ejected from a conductive substrate and subsequently transmitted through organic monolayers. Using this method, we ... Read more >>

Langmuir (Langmuir : the ACS journal of surfaces and colloids)
[2007, 23(11):6156-6162]

Cited: 7 times

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A clinical study of optical biopsy of the uterine cervix using a multispectral imaging system.

Irene M Orfanoudaki, George C Themelis, Stavros K Sifakis, Despina H Fragouli, John G Panayiotides, Eleftheria M Vazgiouraki, Eugenios E Koumantakis,

OBJECTIVE: To present the clinical application of the multispectral imaging colposcopic system (MIS colposcopy). METHODS: MIS colposcopy was performed on 123 enrolled women. After a 3% acetic acid application, sequential images were captured, analyzed, and stored automatically. Directed biopsies were taken from distinct marked acetic acid-responsive tissue areas indicated on ... Read more >>

Gynecol. Oncol. (Gynecologic oncology)
[2005, 96(1):119-131]

Cited: 21 times

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