Electric-field-controlled phase transition in a 2D molecular layer

Abstract Self-assembly of organic molecules is a mechanism crucial for design of molecular nanodevices. We demonstrate unprecedented control over the self-assembly, which could allow switching and patterning at scales accessible by lithography techniques. We use the scanning tunneling microscope (ST...

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Autores principales:	Peter Matvija, Filip Rozbořil, Pavel Sobotík, Ivan Ošťádal, Barbara Pieczyrak, Leszek Jurczyszyn, Pavel Kocán
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4c9bb5c40b834008b13a03ab7fe96c84
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spelling	oai:doaj.org-article:4c9bb5c40b834008b13a03ab7fe96c842021-12-02T16:06:57ZElectric-field-controlled phase transition in a 2D molecular layer10.1038/s41598-017-07277-72045-2322https://doaj.org/article/4c9bb5c40b834008b13a03ab7fe96c842017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07277-7https://doaj.org/toc/2045-2322Abstract Self-assembly of organic molecules is a mechanism crucial for design of molecular nanodevices. We demonstrate unprecedented control over the self-assembly, which could allow switching and patterning at scales accessible by lithography techniques. We use the scanning tunneling microscope (STM) to induce a reversible 2D-gas-solid phase transition of copper phthalocyanine molecules on technologically important silicon surface functionalized by a metal monolayer. By means of ab-initio calculations we show that the charge transfer in the system results in a dipole moment carried by the molecules. The dipole moment interacts with a non-uniform electric field of the STM tip and the interaction changes the local density of molecules. To model the transition, we perform kinetic Monte Carlo simulations which reveal that the ordered molecular structures can form even without any attractive intermolecular interaction.Peter MatvijaFilip RozbořilPavel SobotíkIvan OšťádalBarbara PieczyrakLeszek JurczyszynPavel KocánNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Peter Matvija Filip Rozbořil Pavel Sobotík Ivan Ošťádal Barbara Pieczyrak Leszek Jurczyszyn Pavel Kocán Electric-field-controlled phase transition in a 2D molecular layer
description	Abstract Self-assembly of organic molecules is a mechanism crucial for design of molecular nanodevices. We demonstrate unprecedented control over the self-assembly, which could allow switching and patterning at scales accessible by lithography techniques. We use the scanning tunneling microscope (STM) to induce a reversible 2D-gas-solid phase transition of copper phthalocyanine molecules on technologically important silicon surface functionalized by a metal monolayer. By means of ab-initio calculations we show that the charge transfer in the system results in a dipole moment carried by the molecules. The dipole moment interacts with a non-uniform electric field of the STM tip and the interaction changes the local density of molecules. To model the transition, we perform kinetic Monte Carlo simulations which reveal that the ordered molecular structures can form even without any attractive intermolecular interaction.
format	article
author	Peter Matvija Filip Rozbořil Pavel Sobotík Ivan Ošťádal Barbara Pieczyrak Leszek Jurczyszyn Pavel Kocán
author_facet	Peter Matvija Filip Rozbořil Pavel Sobotík Ivan Ošťádal Barbara Pieczyrak Leszek Jurczyszyn Pavel Kocán
author_sort	Peter Matvija
title	Electric-field-controlled phase transition in a 2D molecular layer
title_short	Electric-field-controlled phase transition in a 2D molecular layer
title_full	Electric-field-controlled phase transition in a 2D molecular layer
title_fullStr	Electric-field-controlled phase transition in a 2D molecular layer
title_full_unstemmed	Electric-field-controlled phase transition in a 2D molecular layer
title_sort	electric-field-controlled phase transition in a 2d molecular layer
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/4c9bb5c40b834008b13a03ab7fe96c84
work_keys_str_mv	AT petermatvija electricfieldcontrolledphasetransitionina2dmolecularlayer AT filiprozboril electricfieldcontrolledphasetransitionina2dmolecularlayer AT pavelsobotik electricfieldcontrolledphasetransitionina2dmolecularlayer AT ivanostadal electricfieldcontrolledphasetransitionina2dmolecularlayer AT barbarapieczyrak electricfieldcontrolledphasetransitionina2dmolecularlayer AT leszekjurczyszyn electricfieldcontrolledphasetransitionina2dmolecularlayer AT pavelkocan electricfieldcontrolledphasetransitionina2dmolecularlayer
_version_	1718384773869600768

Electric-field-controlled phase transition in a 2D molecular layer

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