A5008790709- Molecular Junctions and Nanostructures
- Quantum and electron transport phenomena
- Photochemistry and Electron Transfer Studies
- Organic Light-Emitting Diodes Research
- Nanofabrication and Lithography Techniques
- Advanced Sensor and Energy Harvesting Materials
- Liquid Crystal Research Advancements
- Luminescence and Fluorescent Materials
- Polydiacetylene-based materials and applications
- Nonlinear Optical Materials Studies
- Surface Roughness and Optical Measurements
- Photochromic and Fluorescence Chemistry
- Advanced Materials and Mechanics
- Innovative Microfluidic and Catalytic Techniques Innovation
- Photopolymerization techniques and applications
- Spectroscopy and Quantum Chemical Studies
- Lanthanide and Transition Metal Complexes
- Conducting polymers and applications
- Graphene research and applications
- Laser Material Processing Techniques
- Advanced optical system design
- Organic Electronics and Photovoltaics
- Analytical Chemistry and Sensors
- Porphyrin and Phthalocyanine Chemistry
- Oxidative Organic Chemistry Reactions
Italian Institute of Technology
2019-2025
University of Pisa
2023-2025
Piaggio (Italy)
2021-2025
Piaggio Aerospace (Italy)
2019-2025
University of Groningen
2015-2022
Center for Micro-BioRobotics
2019-2021
Istituto Nazionale di Ricerca Metrologica
2021
Tunnelling currents through tunnelling junctions comprising molecules with cross-conjugation are markedly lower than for their linearly conjugated analogues. This effect has been shown experimentally and theoretically to arise from destructive quantum interference, which is understood be an intrinsic, electronic property of molecules. Here we show experimental evidence conformation-driven interference effects by examining through-space conjugation in π-conjugated fragments arranged face-on...
Molecular transistors operating in the quantum tunneling regime represent potential electronic building blocks for future integrated circuits. However, due to their complex fabrication processes and poor stability, traditional molecular can only operate stably at cryogenic temperatures. Here, through a combined experimental theoretical investigation, we demonstrate new design of vertical transistors, with stable switching operations up room temperature, formed from cross-plane...
A straightforward way for the preparation of mechanochromic polymers consists incorporating a suitable content mechanophore in polymeric matrix either by physical dispersion or via covalent functionalization. Although incorporation may require demanding chemical efforts, this approach can offer significant advantages over dispersion. In work, common thermoplastic elastomer, styrene-b-(ethylene-co-butylene)-b-styrene triblock copolymer grafted with maleic anhydride (SEBS-MAH), was covalently...
Advancements in smart soft materials are enhancing the capabilities of robotic manipulators object interactions and complex tasks. Mechanochromic materials, acting as lightweight sensors, offer easily interpretable visual feedback for localized stress detection, structural health monitoring, energy‐efficient skins. Herein, an innovative mechanochromic end‐effector capable discerning local contact stresses during mechanical with objects is presented their relative position ascertained. This...
Quantum interference effects (QI) are of interest in nano-scale devices based on molecular tunneling junctions because they can affect conductance exponentially through minor structural changes. However, their utilization requires the prediction and deterministic control over position magnitude QI features, which remains a significant challenge. In this context, we designed synthesized three benzodithiophenes wires; one linearly-conjugated, cross-conjugated quinone. Using eutectic Ga-In...
Large-area molecular tunneling junctions comprising self-assembled monolayers of redox-active molecules are described that exhibit two-terminal bias switching. The as-prepared undergo partial charge transfer to the underlying metal substrate (Au, Pt, or Ag), which converts their cores from a quinoid hydroquinoid form. resulting rearomatization bond topology cross-conjugated linearly conjugated π system. form correlates appearance an interference feature in transmission spectrum vanishes for...
Abstract Octopus skin is an amazing source of inspiration for bioinspired sensors, actuators and control solutions in soft robotics. Soft organic materials, biomacromolecules protein ingredients octopus combined with a distributed intelligence, result adaptive displays that can emerging optical behavior, 3D surface textures rough geometries, remarkably high speed (≈ms). To be able to replicate deformable compliant materials capable translating mechanical perturbations molecular structural...
In this study, we present a thermoplasmonic transparent ink based on colloidal dispersion of indium tin oxide (ITO) nanoparticles, which can offer several advantages as anti-counterfeiting technology. The custom could be directly printed substrates, and it is under visible light but able to generate heat by absorption NIR radiation. Dynamic temperature mapping the motifs was performed using thermal camera while irradiating samples with an IR lamp. presented fine features (in order 75 μm)...
The performances of PMMA luminescent solar concentrators fabricated from virgin and recycled monomers were compared to highlight their similar efficiencies account for the effect purity latter on longevity device.
A chromogenically reversible, mechanochromic pressure sensor is integrated into a mininvasive surgical grasper compatible with the da Vinci robotic system. The sensorized effector, also featuring two soft-material jaws, encompasses polymeric inset doped functionalized spiropyran (SP) molecule, designed to activate mechanochromism at chosen and providing reversible color change. Considering such tools are systematically in visual field of operator during surgery, change effector can help...
Abstract Micro‐nano‐fabrication on objects with complex surfaces is essential for the development of technologies in growing fields flexible electronics and photonics. Various strategies are devised to extend fabrication from conventional planar substrates curved ones, however, significant challenges still exist, especially framework 3D printing additive manufacturing. In this study, a novel technique presented realize micro‐structures arbitrary providing an extreme level conformability....
Sorption of a fluorescent coumarin (7-hydroxy coumarin, umbelliferone, UMB) in δ and ε nanoporous crystalline (NC) syndiotactic polystyrene (sPS) films is studied. The formation cocrystalline (CC) phases sPS with UMB proved by wide-angle X-ray diffraction (WAXD) polarized Fourier transform infrared spectroscopy (FTIR) measurements. For δ-form films, guest molecules are mainly isolated the cavities, their molecular plane preferentially oriented perpendicular to phase chain axes. ε-form on...
Furan/maleimide dynamic covalent chemistry has been extensively used to fabricate re-workable and self-healing thermosets. Understanding the relationship between crosslinker structure, network dynamics, material final properties, however, remains a challenge. This study introduces shape-memory thermosets derived from furan-functionalized polyketones (PKFU) crosslinked with aromatic bis-maleimides, i.e., 1,1'-(methylenedi-4,1-phenylene)bis-maleimide (BISM1)...
Abstract The development of mechanochromic polymers offers transformative potential for applications requiring real‐time stress sensing and emission control. This study presents a novel double‐layer polymer system that synergistically combines high‐quantum‐yield fluorophore‐based emissive layer perylene bisimide‐derived optical filter to achieve exceptional performance. utilizes pyrene‐functionalized polyolefins produce strain‐induced fluorescence shift, while the modulates intensity through...
Large-area tunneling junctions using eutectic Ga–In (EGaIn) as a top contact have proven to be robust, reproducible, and technologically relevant platform for molecular electronics. Thus far, the majority of studies focused on saturated molecules with backbones consisting mainly alkanes in which frontier orbitals are either highly localized or energetically inaccessible. We show that self-assembled monolayers wire-like oligophenyleneethynylenes (OPEs), fully conjugated, only exhibit...
Conformable electronic devices, able to adhere non-planar surfaces such as the human skin, can be regarded an innovative platform for delivery of several stimuli body without drawbacks associated with bulky electronics.
Abstract Direct laser writing (DLW) is an innovative technology based on two‐photon polymerization processes which allow the 3D printing of architectures with arbitrary complexity at (sub)micrometer scale. While most research interest in this field relies additive manufacturing, subtractive approaches can be extremely helpful nano/microfabrication, allowing preparation expendable scaffolds, replaceable parts, and for protection fragile structures. In study, we show that simple addition...
Luminescent Solar Concentrators (LSCs) are a type of light concentrating devices which offer several advantages over other optical methods, like the possibility working with diffuse and appealing aesthetics, makes them an ideal technology for their integration in building's facades urban settings. In order to improve effectiveness foster large-scale adoption, solutions lower impact production extend lifetime would be extremely beneficial. Photostability is crucial fluorophores used LSCs, as...
This paper describes the conductance of single-molecules and self-assembled monolayers comprising an oligophenyleneethynylene core, functionalized with acenes increasing length that extend conjugation perpendicular to path tunneling electrons. In Mechanically Controlled Break Junction (MCBJ) experiment, multiple plateaus were identified. The high plateau, which we attribute single molecule conformation, shows increase as a function acene length, in good agreement theoretical predictions....