High Electrical Conductivity of Single Metal–Organic Chains
Entity
UAM. Departamento de Física de la Materia Condensada; UAM. Departamento de Química InorgánicaPublisher
Wiley-VCH VerlagDate
2018-05-21Citation
10.1002/adma.201705645
Advanced Materials, 30(21): 1705645
ISSN
0935-9648DOI
10.1002/adma.201705645Funded by
This work was supported by MINECO projects Consolider CSD2010‐00024, MAT2016‐77608‐C3‐1‐P and 3‐P, FIS2012‐37549‐C05‐03, FIS2015‐64886‐C5‐5‐P, and FIS2016‐80434‐P. J.S., J.J.P., J.G.H., and F.Z. acknowledge financial support through The “María de Maeztu” Programme for Units of Excellence in R&D (MDM‐2014‐0377). The authors thank A. Gil for insightful discussions. J.J.P. also acknowledges the European Union structural funds and the Comunidad de Madrid under Grant Nos. S2013/MIT‐3007 and S2013/MIT‐2850; the Generalitat Valenciana under Grant No. PROMETEO/2012/011, and the computer resources and assistance provided by the Centro de Computación Científica of the Universidad Autónoma de Madrid and the RESProject
Gobierno de España. CSD2010‐00024; Gobierno de España. MAT2016‐77608‐C3‐1‐P; Gobierno de España. FIS2012‐37549‐C05‐03; Gobierno de España. FIS2015‐64886‐C5‐5‐P; Gobierno de España. FIS2016‐80434‐P; Gobierno de España. MDM‐2014‐0377; Comunidad de Madrid. S2013/MIT‐3007/MAD2D; Comunidad de Madrid. S2013/MIT‐2850/NANOFRONTMAG-CMEditor's Version
https://doi.org/10.1002/adma.201705645Subjects
MMX; Molecular electronics; Molecular wires; Single-molecule conductivity; Física; QuímicaNote
This is the peer reviewed version of the following article: Ares, P., Amo‐Ochoa, P., Soler, J. M., Palacios, J. J., Gómez‐Herrero, J., & Zamora, F. (2018). High electrical conductivity of single metal–organic chains. Advanced Materials, 30(21): 1705645, which has been published in final form at https://doi.org/10.1002/adma.201705645. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived VersionsRights
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimAbstract
Molecular wires are essential components for future nanoscale electronics. However, the preparation of individual long conductive molecules is still a challenge. MMX metal–organic polymers are quasi-1D sequences of single halide atoms (X) bridging subunits with two metal ions (MM) connected by organic ligands. They are excellent electrical conductors as bulk macroscopic crystals and as nanoribbons. However, according to theoretical calculations, the electrical conductance found in the experiments should be even higher. Here, a novel and simple drop-casting procedure to isolate bundles of few to single MMX chains is demonstrated. Furthermore, an exponential dependence of the electrical resistance of one or two MMX chains as a function of their length that does not agree with predictions based on their theoretical band structure is reported. This dependence is attributed to strong Anderson localization originated by structural defects. Theoretical modeling confirms that the current is limited by structural defects, mainly vacancies of iodine atoms, through which the current is constrained to flow. Nevertheless, measurable electrical transport along distances beyond 250 nm surpasses that of all other molecular wires reported so far. This work places in perspective the role of defects in 1D wires and their importance for molecular electronics
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Google Scholar:Ares García, Pablo
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Amo Ochoa, María Pilar
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Soler Torroja, José María
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Palacios Burgos, Juan José
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Gómez Herrero, Julio
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Zamora Abanades, Félix Juan
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