| 1. |
- Becher, J, et al.
(författare)
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Tetrathiafulvaleno-Annelated Porphyrins
- 2001
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Ingår i: Angewandte Chemie (International ed. in English). - 1521-3773. ; 40:13, s. 2497-
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Tidskriftsartikel (refereegranskat)
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| 2. |
- Jain, T., et al.
(författare)
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Aligned Growth of Gold Nanorods in PMMA Channels: Parallel Preparation of Nanogaps
- 2012
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Ingår i: ACS Nano. - : American Chemical Society (ACS). - 1936-086X .- 1936-0851. ; 6:5, s. 3861-3867
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Tidskriftsartikel (refereegranskat)abstract
- We demonstrate alignment and positional control of gold nanorods grown in situ on substrates using a seed-mediated synthetic approach. Alignment control is obtained by directing the growth of spherical nanoparticle seeds into nanorods in well-defined poly(methyl methacrylate) nanochannels. Substrates with prepatterned metallic electrodes provide an additional handle for the position of the gold nanorods and yield nanometer-sized gaps between the electrode and nanorod. The presented approach is a novel demonstration of bottom-up device fabrication of multiple nanogap junctions on a single chip mediated via in situ growth of gold nanorods acting as nanoelectrodes.
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| 3. |
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| 4. |
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| 5. |
- Arroyo, C.R., et al.
(författare)
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Quantum interference effects at room temperature in OPV-based single-molecule junctions
- 2013
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Ingår i: Nanoscale Research Letters. - 1556-276X .- 1931-7573. ; 8:1
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Tidskriftsartikel (refereegranskat)abstract
- Interference effects on charge transport through an individual molecule can lead to a notable modulation and suppression on its conductance. In this letter, we report the observation of quantum interference effects occurring at room temperature in single-molecule junctions based on oligo(3)-phenylenevinylene (OPV3) derivatives, in which the central benzene ring is coupled to either para- or meta-positions. Using the break-junction technique, we find that the conductance for a single meta-OPV3 molecule wired between gold electrodes is one order of magnitude smaller than that of a para-OPV3 molecule. Theoretical calculations confirm the occurrence of constructive and destructive interference in the para- and meta-OPV3 molecules respectively, which arises from the phase difference of the transmission coefficients through the molecular orbitals.
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| 6. |
- Danilov, Andrey, 1961, et al.
(författare)
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Electronic transport in single molecule junctions: Control of the molecule-electrode coupling through intramolecular tunneling barriers
- 2008
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Ingår i: Nano Letters. - : American Chemical Society (ACS). - 1530-6992 .- 1530-6984. ; 8:1, s. 1-5
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Tidskriftsartikel (refereegranskat)abstract
- We report on single molecule electron transport measurements of two oligophenylenevinylene (OPV3) derivatives placed in a nanogap between gold (Au) or lead (Pb) electrodes in a field effect transistor device. Both derivatives contain thiol end groups that allow chemical binding to the electrodes. One derivative has additional methylene groups separating the thiols from the delocalized pi-electron system. The insertion of methylene groups changes the open state conductance by 3-4 orders of magnitude and changes the transport mechanism from a coherent regime with finite zero-bias conductance to sequential tunneling and Coulomb blockade behavior.
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| 7. |
- Danilov, Andrey, 1961, et al.
(författare)
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Nanoelectromechanical switch operating by tunneling of an entire C-60 molecule
- 2008
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Ingår i: Nano Letters. - 1530-6992 .- 1530-6984. ; 8:8, s. 2393-2398
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Tidskriftsartikel (refereegranskat)abstract
- We present a solid state single molecule electronic device where switching between two states with different conductance happens predominantly by tunneling of an entire C-60 molecule. This conclusion is based on a novel statistical analysis of similar to 10(5) switching events. The analysis yields (i) the relative contribution of tunneling, current induced heating and thermal fluctuations to the switching mechanism, (ii) the voltage dependent energy barrier (similar to 100-200 meV) separating the two states of the switch and (iii) the switching attempt frequency, omega(0) corresponding to a 2.8 meV mode, which is most likely rotational.
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| 8. |
- Danilov, Andrey, 1961, et al.
(författare)
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Single molecular devices with fullerenes and oligophenylenevinylene (OPV) derivatives
- 2005
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Ingår i: IEEE INTERNATIONAL ELECTRON DEVICES MEETING 2005, TECHNICAL DIGEST. - 078039268X ; , s. 481-484
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Konferensbidrag (refereegranskat)abstract
- We have studied low temperature electron transport in three terminal single molecule transistors. Devices with OPV revealed a relation between transistor characteristics and position of molecular redox potentials strongly influenced by proximity to the metal. Fullerene based devices demonstrate negative differential resistance and indicate strong coupling of fullerene to gold.
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