Charge Transport through Molecular Towers Based on Tetraphenylmethane Tripods

0475148 - ÚFCH JH 2018 RIV CZ eng C - Conference Paper (international conference)
Kolivoška, Viliam - Šebera, Jakub - Lindner, M. - Valášek, M. - Mayor, M. - Mészáros, G. - Gasior, Jindřich - Hromadová, Magdaléna
Charge Transport through Molecular Towers Based on Tetraphenylmethane Tripods.
XXXVII. Moderní elektrochemické metody. Sborník přednášek mezinárodní odborné konference. Ústí nad Labem: Best servis, 2017 - (Navrátil, T.; Fojta, M.; Schwarzová, K.), s. 99-103. ISBN 978-80-905221-5-2.
[Moderní elektrochemické metody /37./. Jetřichovice (CZ), 15.05.2017-19.05.2017]
R&D Projects: GA ČR(CZ) GA14-05180S; GA ČR GJ16-07460Y
Grant - others:AV ČR(CZ) MTA-16-02; Akademie věd - GA AV ČR(CZ) L200401501
Program: Bilaterální spolupráce
Institutional support: RVO:61388955
Keywords : Charge Transport Through Single Molecules * Break Junction Technique * Molecular Electronics
OECD category: Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Molecular platforms with multiple anchors were introduced recently to provide robust
coupling between molecular electronic components and metallic electrodes. In this work,
charge transport in tower-shaped single molecule conductors based on tetraphenylmethane
tripod possessing three thiol anchors is investigated by scanning tunneling microscopy break
junction technique. The effect of tripod substitution pattern and number of repeating units in
molecule is addressed. The substitution was found to influence conductance value in early
stages of molecular junction evolution, where tower lays parallel to surface. In late stages, the
charge is transported through principal molecular axis and junction breaks thermally in tilted
configuration.
Permanent Link: http://hdl.handle.net/11104/0272000