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Proceedings Paper

Hybrid metal-organic conductive network with plasmonic nanoparticles and fluorene (Conference Presentation)
Author(s): Laura Fontana; Ilaria Fratoddi; Roberto Matassa; Giuseppe Familiari; Iole Venditti; Chiara Batocchio; Elena Magnano; Silvia Nappini; Grigore Leahu; Alessandro Belardini; Roberto Li Voti; Concita Sibilia

Paper Abstract

For the development of new generation portable electronic devices, the realization of thin and flexible electrodes have a crucial role. Conductive organic systems can address this issue in different ways. Indeed, conductance in organic molecules were studied in different papers starting from seminal papers in last 70’s [1] up to recent ones [2]. Among organic species, conduction and electronic characteristics of Fluorene derivatives were studied in different configurations [3,4]. Unfortunately, the conductance of organic materials is limited by charge transport mechanism [5]. Hybrid system with organic conductive compounds covalently linked with metal centres can lead to enhanced conductivity [6]. Here we synthesized gold and silver nanoparticles (AuNPs and AgNPs) stabilized with a fluorene thiolate derivative, namely 9,9-Didodecyl-2,7-bis(acetylthio)fluorene (FL). In the synthesis process the metal nanoparticles (MNPs) size results to be around 5 nm in diameter [7]. When deposited on a planar substrate, the hybrid compound form a regular network of MNPs separated each other by fluorene spacers covalently linked by thiol groups [8]. We deposited the network on substrate with two interdigitated electrodes in order to measure conductive properties (I-V characteristics). In I-V measurements it results to be that AgNPs based network is 200 times more conductive than AuNPs one. Selective oxidation of AgNPs network close to positive electrodes gives rise to a Schottky diode behavior in the I-V characteristic that could find potential applications in nano-electronics devices. The fluorescence and extinction spectra of FL-AgNPs and FL-AuNPs where characterised. References [1] C. K. Chiang, C. R. Fincher, Jr., Y. W. Park, A. J. Heeger, H. Shirakawa, E. J. Louis, S. C. Gau, and Alan G. MacDiarmid, Phys. Rev. Lett. 39, 1098 (1977). [2] Hylke B. Akkerman, Paul W. M. Blom, Dago M. de Leeuw and Bert de Boer, Nature 441, 69 (2006). [3] Rajendra Prasad Kalakodimi, Aletha M. Nowak, and Richard L. McCreery, Chem. Mater. 17, 4939 (2005). [4] J. Wu, K. Mobley, and R. L. Mc Creery, J. Chem. Phys. 126, 024704 (2007). [5] Cristina Hermosa, Jose Vicente Álvarez, Mohammad-Reza Azani, Carlos J. Gómez-García, Michelle Fritz, Jose M. Soler, Julio Gómez-Herrero, Cristina Gómez-Navarro and Félix Zamora, Nature Commun. 4, 1709 (2013). DOI: 10.1038/ncomms2696. [6] Nunzio Tuccitto, Violetta Ferri, Marco Cavazzini, Silvio Quici, Genady Zhavnerko, Antonino Licciardello and Maria Anita Rampi, Nature Mater. 8, 41 (2009). [7] Quintiliani, M., Bassetti, M., Pasquini, C., et al. J. Mater. Chem. C, 2014, (2), pp. 2517-2527. [8] R. Matassa, G. Familiari, E. Battaglione, Concita Sibilia et al., Nanoscale, 2016,8, 18161-18169.

Paper Details

Date Published: 8 June 2017
PDF: 1 pages
Proc. SPIE 10227, Metamaterials XI, 102270Q (8 June 2017); doi: 10.1117/12.2269103
Show Author Affiliations
Laura Fontana, Sapienza Univ. di Roma (Italy)
Ilaria Fratoddi, Sapienza Univ. di Roma (Italy)
Roberto Matassa, Sapienza Univ. di Roma (Italy)
Giuseppe Familiari, Sapienza Univ. di Roma (Italy)
Iole Venditti, Sapienza Univ. di Roma (Italy)
Chiara Batocchio, Univ. degli Studi di Roma Tre (Italy)
Elena Magnano, Istituto Officina dei Materiali (Italy)
Silvia Nappini, Istituto Officina dei Materiali (Italy)
Grigore Leahu, Sapienza Univ. di Roma (Italy)
Alessandro Belardini, Sapienza Univ. di Roma (Italy)
Roberto Li Voti, Sapienza Univ. di Roma (Italy)
Concita Sibilia, Sapienza Univ. di Roma (Italy)

Published in SPIE Proceedings Vol. 10227:
Metamaterials XI
Vladimír Kuzmiak; Peter Markos; Tomasz Szoplik, Editor(s)

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