Self-assembled nanogaps for molecular electronics
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Self-assembled nanogaps for molecular electronics. / Tang, Qingxin; Tong, Yanhong; Jain, Titoo; Hassenkam, Tue; Wan, Qing; Moth-Poulsen, Kasper; Bjørnholm, Thomas.
In: Nanotechnology, Vol. 20, No. 24, 2009.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Self-assembled nanogaps for molecular electronics
AU - Tang, Qingxin
AU - Tong, Yanhong
AU - Jain, Titoo
AU - Hassenkam, Tue
AU - Wan, Qing
AU - Moth-Poulsen, Kasper
AU - Bjørnholm, Thomas
PY - 2009
Y1 - 2009
N2 - A nanogap for molecular devices was realized using solution-based self-assembly. Gold nanorods were assembled to gold nanoparticle-coated conducting SnO2:Sb nanowires via thiol end-capped oligo(phenylenevinylene)s (OPVs). The molecular gap was easily created by the rigid molecule itself during self-assembly and the gap length was determined by the molecule length. The gold nanorods and gold nanoparticles, respectively covalently bonded at the two ends of the molecule, had very small dimensions, e. g. a width of similar to 20 nm, and hence were expected to minimize the screening effect. The ultra-long conducting SnO2:Sb nanowires provided the bridge to connect one of the electrodes of the molecular device (gold nanoparticle) to the external circuit. The tip of the atomic force microscope (AFM) was contacted onto the other electrode (gold nanorod) for the electrical measurement of the OPV device. The conductance measurement confirmed that the self-assembly of the molecules and the subsequent self-assembly of the gold nanorods was a feasible method for the fabrication of the nanogap of the molecular devices.
AB - A nanogap for molecular devices was realized using solution-based self-assembly. Gold nanorods were assembled to gold nanoparticle-coated conducting SnO2:Sb nanowires via thiol end-capped oligo(phenylenevinylene)s (OPVs). The molecular gap was easily created by the rigid molecule itself during self-assembly and the gap length was determined by the molecule length. The gold nanorods and gold nanoparticles, respectively covalently bonded at the two ends of the molecule, had very small dimensions, e. g. a width of similar to 20 nm, and hence were expected to minimize the screening effect. The ultra-long conducting SnO2:Sb nanowires provided the bridge to connect one of the electrodes of the molecular device (gold nanoparticle) to the external circuit. The tip of the atomic force microscope (AFM) was contacted onto the other electrode (gold nanorod) for the electrical measurement of the OPV device. The conductance measurement confirmed that the self-assembly of the molecules and the subsequent self-assembly of the gold nanorods was a feasible method for the fabrication of the nanogap of the molecular devices.
U2 - 10.1088/0957-4484/20/24/245205
DO - 10.1088/0957-4484/20/24/245205
M3 - Journal article
C2 - 19468160
VL - 20
JO - Nanotechnology
JF - Nanotechnology
SN - 0957-4484
IS - 24
ER -
ID: 13208534