2015
DOI: 10.1021/ja511271e
|View full text |Cite
|
Sign up to set email alerts
|

Charge Transport in C60-Based Dumbbell-type Molecules: Mechanically Induced Switching between Two Distinct Conductance States

Abstract: Single molecule charge transport characteristics of buckminsterfullerene-capped symmetric fluorene-based dumbbell-type compound (1) were investigated by scanning tunneling microscopy break junction (STM-BJ), current sensing atomic force microscopy break junction (CS-AFM-BJ) and mechanically controlled break junction (MCBJ) techniques, under ambient conditions. We also show that the compound 1 is able to form highly organized defect-free surface adlayers, allowing the molecules on the surface to be addressed sp… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

3
36
0

Year Published

2016
2016
2021
2021

Publication Types

Select...
5
3

Relationship

1
7

Authors

Journals

citations
Cited by 42 publications
(39 citation statements)
references
References 66 publications
3
36
0
Order By: Relevance
“…26 Additionally, a more recent study of a dumbbell fullerene derivative shows two different electronic transport configurations, one assigned to the transport through the molecular bridge and the second, at higher conductance values, ascribed to a single C 60 anchoring group trapped between the two adjacent electrodes. 27 These two peaks differ by two orders of magnitude (10 −1 G 0 and 10 −3 G 0 ), which is relatively consistent with the previous reported values for pristine C 60 fullerenes 18-21 and dumbbell C 60 fullerene derivatives. [24][25][26]28 We can also find theoretical studies that support these results 29,30 and experimental studies of other C 60 fullerene derivatives, i.e.…”
Section: Introductionsupporting
confidence: 91%
“…26 Additionally, a more recent study of a dumbbell fullerene derivative shows two different electronic transport configurations, one assigned to the transport through the molecular bridge and the second, at higher conductance values, ascribed to a single C 60 anchoring group trapped between the two adjacent electrodes. 27 These two peaks differ by two orders of magnitude (10 −1 G 0 and 10 −3 G 0 ), which is relatively consistent with the previous reported values for pristine C 60 fullerenes 18-21 and dumbbell C 60 fullerene derivatives. [24][25][26]28 We can also find theoretical studies that support these results 29,30 and experimental studies of other C 60 fullerene derivatives, i.e.…”
Section: Introductionsupporting
confidence: 91%
“…It was found that dipolar interactions play a vital role in controlling charge‐transport behavior, and the nature of anchoring groups can determine charge‐transfer orbitals, diode behavior, electrical stability, and the number of charge‐transfer channels . Multichannel conducting pathways have previously been demonstrated in molecular systems such as silicon cyclobutanes, thiophene, fullerene derivatives, folded molecular wires, and heterocycle‐based oligo(phenylenethylene) derivatives . However, these systems are flexible and less conductive than fused ladder molecules, and strongly dependent on the conformation of C−C single bonds .…”
Section: Methodsmentioning
confidence: 99%
“…[72] Current-time curves were converted to conductance-distance curves, and corresponding histograms were constructed using ac ombination of software developed inhouse [73] and OriginPro. Al ogarithmic bin size of 0.005 was used for the construction of 1D histograms of log(G/G 0 )v alues from the original data without any selection, in which G is the conductance, presented in units of quantum conductance G 0 = 77.5 mS. [74] For electrochemical desorption studies, monolayers of meta derivative 21 and para derivative 7 were prepared on gold bead electrodes (area 0.17-0.21 cm 2 )b yd eposition from a0 .2 mm solution in ethanol containing triethylamine (10 %v /v ratio) at 60 8Cf or 16 h. Subsequently,t he electrodes were rinsed copiously with pure ethanol. Cyclic voltammograms were measured using aP otentiostat/ Galvanostat PGSTAT12 at as can rate of 0.10 Vs À1 .D esorption was performed in 0.5 m NaOH in ultrapure water in at hree-electrode system containing agold bead working electrode in ahanging meniscus arrangement and pseudo-reference and auxiliary (both gold) electrodes.…”
Section: Film Characterizationmentioning
confidence: 99%