A5066488335- Molecular Junctions and Nanostructures
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Force Microscopy Techniques and Applications
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Particle physics theoretical and experimental studies
- Advanced biosensing and bioanalysis techniques
- Porphyrin and Phthalocyanine Chemistry
- Quantum and electron transport phenomena
- Surface Chemistry and Catalysis
- Graphene research and applications
- Organic Electronics and Photovoltaics
- Crystallography and molecular interactions
- Gas Sensing Nanomaterials and Sensors
- Astro and Planetary Science
- Quantum optics and atomic interactions
- Mechanical and Optical Resonators
- Copper-based nanomaterials and applications
- Planetary Science and Exploration
- Nanowire Synthesis and Applications
- Space Satellite Systems and Control
- Advancements in Semiconductor Devices and Circuit Design
- Electrochemical Analysis and Applications
- ZnO doping and properties
Delft University of Technology
2018-2020
The University of Texas at El Paso
2017
Handan College
2017
Brookhaven National Laboratory
2000-2002
An appealing feature of molecular electronics is the possibility inducing changes in orbital structure through external stimuli. This can provide functionality on single-molecule level that be employed for sensing or switching purposes if associated conductance are sizable upon application Here, we show room-temperature a spring-like molecule mechanically controlled up to an order magnitude by compressing elongating it. Quantum-chemistry calculations indicate large variations result...
Single-molecule break-junction measurements are intrinsically stochastic in nature, requiring the acquisition of large datasets “breaking traces” to gain insight into generic electronic properties molecule under study. For example, most probable conductance value is often extracted from histogram built these traces. In this letter, we present an unsupervised and reference-free machine learning tool improve determination oligo(phenylene ethynylene)dithiol mechanically controlled (MCBJ)...
This Account provides an overview of our recent efforts to unravel charge transport characteristics a metal-molecule-metal junction containing individual π-conjugated molecule. The model system choice is oligo(phenylene-ethynylene) consisting three rings, in short OPE3, which represents paradigmatic for molecular-scale electronics. Members the OPE family are among most studied field thanks their simple and rigid structure, possibility chemically functionalizing them, clear characteristics....
Porphyrin derivatives are key components in natural machinery enabling us to store sunlight as chemical energy. In spite of their prominent role cascades separating electrical charges and potential sensitizers molecular devices, reports concerning electronic transport characteristics inconsistent. Here we report a systematic investigation paths through single porphyrin junctions. The seven structurally related was repeatedly measured an automatized mechanically controlled break-junction...
Machine-learning analyses enable identifying signatures of peptide conformers in single molecule electron transport experiments.
Abstract A conformationally flexible calix[4]pyrrole possessing a conjugated electronic structure (an N‐substituted oxoporphyrinogen (OxP) related to porphyrin) was used investigate the influence of mechanical stretching on single‐molecule conductance these molecules using mechanically‐controlled break junction (MCBJ) technique. The results show that molecule can be immobilized in configuration, giving rise different behaviours. These include step‐like features vs. displacement traces as...
A new concept to improve the reliability of functional single molecule junctions is presented using E ‐field triggered switching Fe II bis‐terpyridine complexes in a mechanically controlled break junction experiment as model system. The comprise push‐pull ligand sensing applied and resulting distortion field expected trigger spin‐crossover event reflected sudden jump transport current. By molecular engineering, active centre complex separated from gold electrodes order eliminate undesired...
The bowl-shaped, 3-fold interlinked porphyrin dimer 2 was obtained in respectable yields during macrocyclization attempts. Its bicyclic structure, consisting of a macrocycle made pair acetylene tetraphenylporphyrins which are additionally linked by C-C bond interlinking two pyrrole subunits, has been confirmed spectroscopically (2D-NMR, UV/vis, HR-MALDI-ToF MS). Late-stage functionalization provided the structural analogue 1 with acetyl-protected terminal thiol anchor groups enabling single...
Fullerenes have attracted interest for their possible applications in various electronic, biological, and optoelectronic devices. However, efficient use such devices, a suitable anchoring group has to be employed that forms well-defined stable contacts with the electrodes. In this work, we propose novel fullerene tetramalonate derivate functionalized trans-1 4,5-diazafluorene groups. The conductance of single-molecule junctions, investigated two different setups mechanically controlled break...
Semiconductor quantum dots are an attractive platform for the realisation of processors. To achieve long-range coupling between them, have been integrated into microwave cavities. However, it has shown that their coherence is then reduced compared to cavity-free implementations. Here, we manipulate states a suspended carbon nanotube double dot with ferromagnetic contacts embedded in cavity. By performing manipulations via cavity photons, demonstrate times order $1.3\mu s$, two orders...
This dissertation concerns transport measurements in single-molecule junctions using the mechanically controlled break junction (MCBJ) technique. It describes various aspects that play a role charge through single molecules, order to develop necessary knowledge ultimately electronic devices based on intrinsic molecular functionality.