Investigation of the geometrical arrangement and single molecule charge transport in self-assembled monolayers of molecular towers based on tetraphenylmethane tripod

Sebechlebská, Táňa; Šebera, Jakub; Kolivoška, Viliam; Lindner, Marcin; Gasior, Jindřich; Mészáros, Gábor; Valášek, Michal; Mayor, Marcel; Hromadová, Magdaléna

doi:10.1016/j.electacta.2017.11.174

Cited by 19 publications

(25 citation statements)

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“…Multipodal platforms were developed recently to establish a directional attachment of molecules to metallic surfaces. 1,2 Tripodal scaffolds are their most common representatives and include triazatriangulene, [3][4][5] trioxatriangulene, 6 cyclohexane trithiol, 7 adamantane, [8][9][10][11] tris(azobenzyl)amine, 12 spirobifluorene, [13][14][15][16] tetraphenylmethane [17][18][19][20][21][22] and tetraphenylsilane 23,24 moieties. The principal function of molecular electronic components is the transport of electric charge.…”

Section: Introductionmentioning

confidence: 99%

“…The latter may be investigated at the single molecule level by various approaches including scanning tunneling microscopy break junction (STM-BJ) technique. 25 Charge transport properties of single molecule electronic components based on tripodal platforms were investigated in several recent contributions focusing on elucidation of charge transport mechanism 3,21,24 and analysis of molecular junction (MJ) geometries. [14][15][16]21,22 Theoretical analysis of the charge transport in MJs used the combination of density functional theory (DFT) and non-equilibrium Green´s function (NEGF) formalism.…”

Section: Introductionmentioning

confidence: 99%

“…25 Charge transport properties of single molecule electronic components based on tripodal platforms were investigated in several recent contributions focusing on elucidation of charge transport mechanism 3,21,24 and analysis of molecular junction (MJ) geometries. [14][15][16]21,22 Theoretical analysis of the charge transport in MJs used the combination of density functional theory (DFT) and non-equilibrium Green´s function (NEGF) formalism. Further, the DFT/NEGF approach was successfully employed to examine the charge transport in molecular electronic elements supported by tripodal platforms including triazatriangulene, 3 adamantane, 11 spirobifluorene [14][15][16] and tetraphenylmethane 19,21 moieties.…”

Section: Introductionmentioning

confidence: 99%

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Tuning the contact conductance of anchoring groups in single molecule junctions by molecular design

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tuning the contact conductance of anchoring groups in single molecule junctions by molecular design

et al. 2019

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“…Multipodal platforms also provide firm coupling between the molecule and the electrode through individual anchor points, and are also receiving increasing interest. Examples include tripodal [134,135,193] and tetrapodal [194] platforms incorporated onto SAMs which, allow to make a strong contact and to enforce an orientation of the molecules at a fixed distance from the surface [190]. Additionally, a selection of the bulky tripodal platform guaranties an effective separation with the metal surface, avoiding the quenching of the excited state caused by the metal surface in a photoisomerization process, allowing to develop optoelectronic devices of great interest in the electronic industry [82].…”

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confidence: 99%

“…X = -SH; Y = -CN_ n = 1-4_SA[134] (b) X = -S(CH2)7CH3, -S(CH2)11CH3, -SAc; Y = -Fe(C5H5)X = -SH; Y = -CN_ n = 1-4_SA[134] (b) X = -S(CH2)7CH3, -S(CH2)11CH3, -SAc; Y = -Fe(C5H5)= -NH 2 ; R = -CNC 8 H 9 _LB [21] X = -COOH; R = -PPh 3 _LB [137] X = -SH; Y = -CN_ n = 1-4_SA [134] (b) X = -S(CH2)7CH3, -S(CH2)11CH3, -SAc; Y = -Fe(C5H5)= Y = -SH, -SCOCH 3 _n = 2-3_SA [31] X = -SH; Y = -CN_ n = 1-4_SA [134] (b) X = -S(CH2)7CH3, -S(CH2)11CH3, -SAc; Y = -Fe(C5H5)X = -SH; Y = -CN_ n = 1-4_SA [134] (b) X = -S(CH2)7CH3, -S(CH2)11CH3, -SAc; Y = -Fe(C5H5)X = -SH; Y = -CN_ n = 1-4_SA [134] (b) X = -S(CH2)7CH3, -S(CH2)11CH3, -SAc; Y = -Fe(C5H5)= Y = Z = 1; M = Zn_SA [140] W = 2; X = Y = Z = -H, -Ph; M = Zn_SA [141] W = X = Y = Z = Py; M = TiO_LbL [142] LS [145] (b) LB [146] Appl. Sci.…”

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Nanofabrication Techniques in Large-Area Molecular Electronic Devices

2020

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The societal impact of the electronics industry is enormous—not to mention how this industry impinges on the global economy. The foreseen limits of the current technology—technical, economic, and sustainability issues—open the door to the search for successor technologies. In this context, molecular electronics has emerged as a promising candidate that, at least in the short-term, will not likely replace our silicon-based electronics, but improve its performance through a nascent hybrid technology. Such technology will take advantage of both the small dimensions of the molecules and new functionalities resulting from the quantum effects that govern the properties at the molecular scale. An optimization of interface engineering and integration of molecules to form densely integrated individually addressable arrays of molecules are two crucial aspects in the molecular electronics field. These challenges should be met to establish the bridge between organic functional materials and hard electronics required for the incorporation of such hybrid technology in the market. In this review, the most advanced methods for fabricating large-area molecular electronic devices are presented, highlighting their advantages and limitations. Special emphasis is focused on bottom-up methodologies for the fabrication of well-ordered and tightly-packed monolayers onto the bottom electrode, followed by a description of the top-contact deposition methods so far used.

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Electrochemical Reduction of Carbon Dioxide on 3D Printed Electrodes

et al. 2021

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Rising levels of atmospheric carbon dioxide (CO 2 ) intensify global warming. Electrochemical reduction of CO 2 allows its conversion into value-added chemicals. This work presents the first application of 3D printing to manufacture catalysts for this process. Carbon nanotube-based electrodes printed by fused deposition modeling were functionalized by copper electroplating. The combination of scanning electron microscopy and electrochemical characterization revealed that the electroplating leads to randomly positioned hemispherical copper microparticles with charge transfer characteristics approaching those of planar interfaces. The activity of catalysts was inspected in the saturated solution of CO 2 in aqueous KHCO 3 electrolyte by monitoring the concentration of formate (HCOO À ) as one of reaction products. The Faradaic efficiency vs. electrode potential dependence found in this work is comparable to characteristics reported for conventionally prepared micro-structured copper catalysts. Procedures devised and implemented in this work pave the way for the development of 3D printed electrocatalysts with controlled micro-architecture, activity and product selectivity.

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Investigation of the geometrical arrangement and single molecule charge transport in self-assembled monolayers of molecular towers based on tetraphenylmethane tripod

Cited by 19 publications

References 79 publications

Tuning the contact conductance of anchoring groups in single molecule junctions by molecular design

Tuning the contact conductance of anchoring groups in single molecule junctions by molecular design

Nanofabrication Techniques in Large-Area Molecular Electronic Devices

Electrochemical Reduction of Carbon Dioxide on 3D Printed Electrodes

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