http://www.cnr.it/ontology/cnr/individuo/prodotto/ID272406

Engineering polydopamine films with tailored behavior for next-genartion eumelanin-related hybrid devices (Articolo in rivista)

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Engineering polydopamine films with tailored behavior for next-genartion eumelanin-related hybrid devices (Articolo in rivista) (literal)

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Marianna Ambrico, Paolo F. Ambrico, Antonio Cardone, Nicola F. Della Vecchia, Teresa Ligonzo, Stefania R. Cicco, Maurizio Mastropasqua Talamo, Alessandra Napolitano, Vincenzo Augelli, Gianluca M. Farinola, Marco d'Ischia (2013)
Engineering polydopamine films with tailored behavior for next-genartion eumelanin-related hybrid devices
in Journal of materials chemistry c; RSC Publishing, Cambridge (Regno Unito)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Marianna Ambrico, Paolo F. Ambrico, Antonio Cardone, Nicola F. Della Vecchia, Teresa Ligonzo, Stefania R. Cicco, Maurizio Mastropasqua Talamo, Alessandra Napolitano, Vincenzo Augelli, Gianluca M. Farinola, Marco d'Ischia (literal)

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CNR-Istituto di Metodologie Inorganiche e dei Plasmi, UOS di Bari, Via Orabona 4, 70125 Bari, Italy. E-mail: Marianna.ambrico@cnr.it CNR-Istituto di Chimica dei Composti OrganoMetallici-UOS di Bari, Via Orabona 4, 70125 Bari, Italy Universita` di Napoli \"Federico II\", Dipartimento di Scienze Chimiche, Via Cintia 4, I- 80126 Naples, Italy. E-mail: dischia@unina.it Dipartimento Interateneo di Fisica, Universita` degli Studi di Bari \"Aldo Moro\", Via Orabona 4, 70125 Bari, Italy Dipartimento di Chimica, Universita` degli Studi di Bari \"Aldo Moro\", via Orabona 4, 70125 Bari, Italy (literal)

Titolo

Engineering polydopamine films with tailored behavior for next-genartion eumelanin-related hybrid devices (literal)

Abstract

Eumelanin-type biopolymers have attracted growing interest in the quest for soft bioinspired functional materials for application in organoelectronics. Recently, a metal-insulator-semiconductor device with a good quality interface was produced by spin coating of a commercial synthetic eumelanin-like material on a dry plasma-modified silicon surface. As a proof-of-concept step toward the design and implementation of next-generation eumelanin-inspired devices, we report herein an expedient chemical strategy to bestow n-type performance to polydopamine, a highly popular eumelanin-related biopolymer with intrinsic semiconductor behaviour, and to tune its electrical properties. The strategy relies on aerial co-oxidation of dopamine with suitable aromatic amines, e.g. 3-aminotyrosine or p- phenylenediamine, leading to good quality black polymeric films. Capacitance-voltage experiments on poly(dopamine/3-aminotyrosine) and poly(dopamine/p-phenylenediamine)-based metal insulator semiconductor devices on p-Si indicated a significant increase in flat band voltage with respect to polydopamine and previous synthetic eumelanin-based diodes. Variations of the flat band voltage under vacuum were observed for each device. These results point to polydopamine as a versatile eumelanin-type water-dependent semiconductor platform amenable to fine tuning of its electronic properties through incorporation of p-conjugating aromatic amines to tailor functionality. (literal)

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