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1. Azobenzene-based optoelectronic transistors for neurohybrid building blocks

Author

Federica Corrado, Ugo Bruno, Mirko Prato, Antonio Carella, Valeria Criscuolo, Arianna Massaro, Michele Pavone, Ana B. Muñoz-García, Stiven Forti, Camilla Coletti, Ottavia Bettucci, and Francesca Santoro

Subjects
Science
Abstract

Abstract Exploiting the light–matter interplay to realize advanced light responsive multimodal platforms is an emerging strategy to engineer bioinspired systems such as optoelectronic synaptic devices. However, existing neuroinspired optoelectronic devices rely on complex processing of hybrid materials which often do not exhibit the required features for biological interfacing such as biocompatibility and low Young’s modulus. Recently, organic photoelectrochemical transistors (OPECTs) have paved the way towards multimodal devices that can better couple to biological systems benefiting from the characteristics of conjugated polymers. Neurohybrid OPECTs can be designed to optimally interface neuronal systems while resembling typical plasticity-driven processes to create more sophisticated integrated architectures between neuron and neuromorphic ends. Here, an innovative photo-switchable PEDOT:PSS was synthesized and successfully integrated into an OPECT. The OPECT device uses an azobenzene-based organic neuro-hybrid building block to mimic the retina’s structure exhibiting the capability to emulate visual pathways. Moreover, dually operating the device with opto- and electrical functions, a light-dependent conditioning and extinction processes were achieved faithful mimicking synaptic neural functions such as short- and long-term plasticity.

Published
2023
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3. Twin-Wire Networks for Zero Interconnect, High-Density 4-Wire Electrical Characterizations of Materials

Author

Nerio Andrés Montoya, Valeria Criscuolo, Andrea Lo Presti, Raffaele Vecchione, and Christian Falconi

Subjects
Science
Abstract

Four-wire measurements have been introduced by Lord Kelvin in 1861 and have since become the standard technique for characterizing small resistances and impedances. However, high-density 4-wire measurements are generally complex, time-consuming, and inefficient because of constraints on interconnects, pads, external wires, and mechanical contacts, thus reducing reproducibility, statistical significance, and throughput. Here, we introduce, systematically design, analyze, and experimentally validate zero interconnect networks interfaced to external instrumentation by couples of twin wire. 3D-printed holders with magnets, interconnects, nonadhesive layers, and spacers can effortlessly establish excellent electrical connections with tunable or minimum contact forces and enable accurate measurements even for delicate devices, such as thin metals on soft polymers. As an example, we measured all the resistances of a twin-wire 29-resistor network made of silver-nanoparticle ink printed on polyimide, paper, or photo paper, including during sintering or temperature calibration, resulting in an unprecedentedly easy and accurate characterization of both resistivity and its temperature coefficient. The theoretical framework and experimental strategies reported here represent a breakthrough toward zero interconnect, simple, and efficient high-density 4-wire characterizations, can be generalized to other 4-wire measurements (impedances, sensors) and can open the way to more statistically meaningful and reproducible analyses of materials, high-throughput measurements, and minimally invasive characterizations of biomaterials.

Published
2022
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5. Two-photon polymerization lithography enabling the fabrication of PEDOT:PSS 3D structures for bioelectronic applications

Author

Amedeo Ruggiero, Valeria Criscuolo, Sara Grasselli, Ugo Bruno, Chiara Ausilio, Claudia Latte Bovio, Ottavia Bettucci, Francesca Santoro, Ruggiero, A, Criscuolo, V, Grasselli, S, Bruno, U, Ausilio, C, Bovio, C, Bettucci, O, and Santoro, F

Subjects
PEDOT: PSS, bioelectronics, TPL, Polymers, Electric Conductivity, Metals and Alloys, General Chemistry, Bridged Bicyclo Compounds, Heterocyclic, Catalysis, Polymerization, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, CHIM/06 - CHIMICA ORGANICA, ddc:540, Materials Chemistry, Ceramics and Composites
Abstract

Chemical communications 58(70), 9790-9793 (2022). doi:10.1039/D2CC03152C, Published by The Royal Society of Chemistry, Cambridge

Published
2022
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6. Eumelanin-Based Organic Bioelectronics: Myth or Reality?

Author

Alessandro Pezzella, Angelica Navarra, Ludovico Migliaccio, C. T. Prontera, Antonio Cassinese, Valeria Criscuolo, Orlando Crescenzi, Paolo Tassini, Cosimo Carfagna, Francesca Cimino, Irene Bonadies, Alessandra Napolitano, Silvia Parisi, Mario Barra, Paola Manini, Lucia Panzella, d’Ischia Marco, Anna Musto, Maria Grazia Maglione, Barra, Mario, Bonadies, Irene, Carfagna, Cosimo, Cassinese, Antonio, Cimino, Francesca, Crescenzi, Orlando, Criscuolo, Valeria, D'Ischia, Marco, Maglione, Maria Grazia, Manini, Paola, Migliaccio, Ludovico, Musto, Anna, Napolitano, Alessandra, Navarra, Angelica, Panzella, Lucia, Parisi, Silvia, Pezzella, Alessandro, Prontera, Carmela Tania, Tassini, Paolo, Tassini, P., Prontera, C. T., Migliaccio, L., and Maglione, M. G.

Subjects
Organic electronics, Bioelectronics, Materials science, Eumelanin, Mechanical Engineering, biomaterial, coating, Nanotechnology, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Biocompatible material, 01 natural sciences, 0104 chemical sciences, optoelectronic, Mechanics of Materials, General Materials Science, Electronic conductivity, 0210 nano-technology, Broadband absorption, Current decay
Abstract

Eumelanins, the black insoluble pigments of human skin, eyes and substantia nigra (neuromelanin), stand today as a unique source of inspiration for the design and implementation of soft biocompatible multifunctional materials for bio-optoelectronic devices. Interest in eumelanins stems from bioavailability, biocompatibility and a peculiar set of physicochemical properties, i.e. broadband absorption in the UV-visible range, intrinsic free radical character, water-dependent hybrid ionic-electronic conductor behaviour, supporting optimistic feelings about a possible rise of eumelanin-mimics as innovative bioinspired solutions for organic bioelectronics. However, a number of conceptual and technological gaps still hinder a rapid progress of melanin-based organic electronics and bioelectronics, including in particular the limited contribution of electronic conductivity and current decay with time under biasing. Herein, we provide a concise overview of the structural and optoelectronic properties of melanins with a view to bringing to focus main issues and challenges en route to bioelectronic applications. Copyright © Materials Research Society 2015.

Published
2016
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7. Melanin-inspired organic electronics: Electroluminescence in asymmetric triazatruxenes

Author

Carla Minarini, Laura Ricciotti, Valeria Criscuolo, Paolo Tassini, Antonio Cassinese, Marco d'Ischia, Mario Barra, Alessandro Pezzella, Orlando Crescenzi, Paola Manini, Maria Grazia Maglione, Vincenzo Barone, Minarini, C., Tassini, P., Maglione, M. G., Criscuolo, V., Manini, Paola, Criscuolo, Valeria, Ricciotti, Laura, Pezzella, Alessandro, Barra, M., Cassinese, Antonio, Crescenzi, Orlando, Barone, V., D'Ischia, Marco, Barra, Mario, Maglione, Maria Grazia, Tassini, Paolo, Minarini, Carla, and Barone, Vincenzo

Subjects
Organic electronics, dihydroxyindoles, Materials science, dihydroxyindole, triazatruxenes, opto-electronic properties, OLEDs, melanin derivative, opto-electronic propertie, Nanotechnology, General Chemistry, Electroluminescence, melanin derivatives, OLED, Cover (algebra)
Abstract

The oxidative polymerization of 5,6-dihydroxyindoles and related hydroxyindoles at pH

Published
2015
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8. Stem cell-compatible eumelanin biointerface fabricated by chemically controlled solid state polymerization

Author

Valeria Criscuolo, Marco d'Ischia, Mario Barra, Anna Musto, Silvia Parisi, Alessandro Pezzella, Angelica Navarra, Michela Alfè, Paola Manini, Antonio Cassinese, Pezzella, Alessandro, Mario, Barra, Musto, Anna, Navarra, Angelica, Michela, Alfè, Manini, Paola, Parisi, Silvia, Cassinese, Antonio, Criscuolo, Valeria, and D'Ischia, Marco

Subjects
Molecular complexity, Materials science, Fabrication, Atomic force microscopy, Process Chemistry and Technology, Solid-state, Stem cell, eumelanin, biointerface, Nanotechnology, Biointerface, Electrochemistry, Polymerization, Mechanics of Materials, General Materials Science, Electrical and Electronic Engineering, Thin film
Abstract

Relying on the water-dependent hybrid conductor properties of eumelanin biopolymers, a structurally controlled melanin thin film that can be reversibly switched-on and off by hydration-dehydration cycles and used as a biocompatible platform for stem cell growth and differentiation up to 11 days is reported. A key feature of the new eumelanin-based bioelectronic interface is its remarkable structural regularity and integrity, as the result of an ad hoc fabrication protocol involving ammonia-induced solid state polymerization (AISSP) technology of a 5,6-dihydroxyindole thin film. The AISSP technology is operationally simple and versatile, enabling the preparation of device-quality thin films (AFM and MALDI-MS evidence) on various substrates with efficient chemical control over molecular complexity. Overall the results of this study pave the way for the implementation of tailored eumelanin thin films for bioelectronic devices, e.g., in organic electrochemical transistors (OECTs).

Published
2015
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10. Melanin-inspired electroluminescent materials for OLED applications

Author

Manini, Paola, Criscuolo, Valeria, Prontera, Carmela Tania, Migliaccio, Ludovico, Pezzella, Alessandro, d’Ischia, Marco, Maddalena, Pasqualino, Paola Manini, Valeria Criscuolo, Carmela Tania Prontera, Ludovico Migliaccio, Alessandro Pezzella, Marco d’Ischia, Mario Barra, Antonio Cassinese, Stefano Lettieri, Pasqualino Maddalena, Maria Grazia Maglione, Paolo Tassini, Carla Minarini, Manini, Paola, Criscuolo, Valeria, Prontera, Carmela Tania, Migliaccio, Ludovico, Pezzella, Alessandro, D’Ischia, Marco, and Maddalena, Pasqualino

Published
2016

11. Eumelanin-based organic electronics

Author

Criscuolo, Valeria, Manini, Paola, Pezzella, Alessandro, Parisi, Silvia, Navarra, Angelica, Valeria Criscuolo, Paola Manini, Alessandro Pezzella, Maria Grazia Maglione, Paolo Tassini, Carla Minarini, Angelica Navarra, Silvia Parisi and Marco d’Ischia, Criscuolo, Valeria, Manini, Paola, Pezzella, Alessandro, Parisi, Silvia, and Navarra, Angelica

Published
2016

12. Toward eco-compatible OLEDs: melanin-inspired design of electroluminescent organic platforms

Author

Criscuolo, Valeria, Manini, Paola, Pezzella, Alessandro, Crescenzi, Orlando, d’Ischia, Marco, Valeria Criscuolo, Paola Manini, Alessandro Pezzella, Orlando Crescenzi, Marco d’Ischia, Salvatore Aprano, Maria Grazia Maglione, Paolo Tassini, Carla Minarini, Criscuolo, Valeria, Manini, Paola, Pezzella, Alessandro, Crescenzi, Orlando, and D’Ischia, Marco

Published
2016

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