Dr. Alberto Portone

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Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 March 2020 in Chemical Science

Journal Article

Transforming colloidal Cs₄PbBr₆ nanocrystals with poly(maleic anhydride-alt-1-octadecene) into stable CsPbBr₃ perovskite emitters through intermediate heterostructures

Dmitry Baranov

Gianvito Caputo

Luca Goldoni

Zhiya Dang

Riccardo Scarfiello

Liberato Manna

The challenge of making strongly emissive CsPbBr₃ perovskite nanocrystals with a robust surface passivation is solved via Cs₄PbBr₆ → CsPbBr₃ transformation triggered by a reaction of oleylamine ligand with poly(maleic anhydride-1-alt-octadecene).

25 November 2020 in Nature Communications

Journal Article

Intelligent non-colorimetric indicators for the perishable supply chain by non-wovens with photo-programmed thermal response

Luigi Romano

Alberto Portone

Maria-Beatrice Coltelli

Francesco Patti

Rosalba Saija

Luana Persano

Spoiled perishable products, such as food and drugs exposed to inappropriate temperature, cause million illnesses every year. Risks range from intoxication due to pathogen-contaminated edibles, to suboptimal potency of temperature-sensitive vaccines. High-performance and low-cost indicators are needed, based on conformable materials whose properties change continuously and irreversibly depending on the experienced time-temperature profile. However, these systems can be limited by unclear reading, especially for colour-blind people, and are often difficult to be encoded with a tailored response to detect excess temperature over varying temporal profiles. Here we report on optically-programmed, non-colorimetric indicators based on nano-textured non-wovens encoded by their cross-linking degree. This combination allows a desired time-temperature response to be achieved, to address different perishable products. The devices operate by visual contrast with ambient light, which is explained by backscattering calculations for the complex fibrous material. Optical nanomaterials with photo-encoded thermal properties might establish new design rules for intelligent labels.

5 January 2021 in ACS Photonics

Journal Article

Heterogeneous Random Laser with Switching Activity Visualized by Replica Symmetry Breaking Maps

Loredana M. Massaro

Silvia Gentilini

15 November 2018 in Nanoscale

Journal Article

Low-defectiveness exfoliation of MoS₂ nanoparticles and their embedment in hybrid light-emitting polymer nanofibers

Alberto Portone

Luigi Romano

Vito Fasano

Riccardo Di Corato

Andrea Camposeo

Luana Persano

MoS₂ nanoparticles are obtained through a highly gentle exfoliation method and are embedded in polymer nanofibers to make them light-emitting.

29 March 2018 in Journal of Materials Chemistry C

Journal Article

Tuning polymorphism in 2,3-thienoimide capped oligothiophene based field-effect transistors by implementing vacuum and solution deposition methods

+13

We report on the investigation of the influence of the molecular packing and film morphology on the field-effect charge mobility in 2,3-thienoimide-based oligothiophenes semiconductors (C_n-NT4N). Organic field-effect transistors are realized by implementing both vacuum and solution methods in order to control the solid-state phase of the active layer. Thermal sublimation in a high vacuum chamber and supersonic molecular beam deposition were used as vacuum-based fabrication approaches for preparing thin films, while lithographically controlled wetting was used, as a solution-deposition technique, for the fabrication of the microstructured films. Thermal sublimation leads to thin films with a phase packing showing ambipolar behaviour, while supersonic molecular beam deposition enables, by varying the deposition rate, the formation of two different crystal phases, showing ambipolar and unipolar field-effect behaviours. On the other hand, lithographically controlled wetting enables the formation of C_n-NT4N microstructured active layers and their implementation in field-effect transistors.

14 May 2019 in Scientific Reports

Journal Article

Tailoring optical properties and stimulated emission in nanostructured polythiophene

Alberto Portone

Lucia Ganzer

Federico Branchi

Rodrigo Ramos

Marília J. Caldas

Tersilla Virgili

Polythiophenes are the most widely utilized semiconducting polymers in organic electronics, but they are scarcely exploited in photonics due to their high photo-induced absorption caused by interchain polaron pairs, which prevents the establishment of a window of net optical gain. Here we study the photophysics of poly(3-hexylthiophene) configured with different degrees of supramolecular ordering, spin-coated thin films and templated nanowires, and find marked differences in their optical properties. Transient absorption measurements evidence a partially-polarized stimulated emission band in the nanowire samples, in contrast with the photo-induced absorption band observed in spin-coated thin films. In combination with theoretical modeling, our experimental results reveal the origin of the primary photoexcitations dominating the dynamics for different supramolecular ordering, with singlet excitons in the nanostructured samples superseding the presence of polaron pairs, which are present in the disordered films. Our approach demonstrates a viable strategy to direct optical properties through structural control, and the observation of optical gain opens the possibility to the use of polythiophene nanostructures as building blocks of organic optical amplifiers and active photonic devices.

About Me

Dr. Alberto Portone holds a degree in Medical Biotechnologies and Nanobiotechnologies and a PhD in Physics and Nanosciences. His scientific career has been distinguished by a strongly multidisciplinary approach, integrating micro- and nanofabrication, advanced materials engineering, 3D printing, and biofabrication technologies for applications spanning optics, biology, and biomedical sciences. In the early stages of his career, he focused on nanotechnology-based strategies for the fabrication of patterned and fibrous scaffolds designed to guide cell adhesion, morphology, and stem cell differentiation through precise nanoscale modifications. This work laid the foundation for the development of engineered microenvironments capable of modulating cellular behavior in a controlled manner. He subsequently expanded his research toward the development of 3D-printed devices and bioprinted artificial tissues, including fibrotic, vascular, and skin models for advanced in vitro testing. His current research combines microfluidics and 3D bioprinting to engineer innovative organ-on-chip platforms. He is particularly engaged in the design of 3D tumor cell culture models, biomimetic hydrogels, and advanced biofabrication strategies aimed at investigating cell phenotype, migration, and behavior as functional readouts within physiologically relevant in vitro systems.

Dr. Alberto Portone

Dr. Alberto Portone

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