Is Ashwell's zwitterion a molecular diode?

Metzger, Robert M.; Tachibana, Hiroaki; Wu, Xiaolin; Höpfner, Ulf; Chen, Bin; Lakshmikantham, M. V.; Cava, Michael P.

doi:10.1016/s0379-6779(97)80271-8

Cited by 38 publications

(44 citation statements)

References 8 publications

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“…self-assembly instead of LB deposition, and therefore more conductive. Indeed, the currents reported in [3] were of order 10…”

Section: Introductionmentioning

confidence: 99%

“…Even the simplest future application, such as molecular memory, will require high quality MR with sharp voltage thresholds, large current rectification ratios, small time constants, large breakdown voltages and so on. MR demonstrated so far [2][3][4] constitute an impressive proof of principle but their electrical parameters are in fact very poor. The situation prompts further investigation of molecular rectification.…”

Section: Introductionmentioning

confidence: 99%

“…They studied theoretically current rectification in LangmuirBlodgett (LB) films of γ-hexadecylquinolinium tricyanoquinodimethanide (C 16 H 33 Q-3CNQ), which was previously studied experimentally [2,3]. That molecule was initially considered to be a possible implementation of the Aviram-Ratner mechanism because its active part Q-3CNQ comprised a donor and an acceptor.…”

Section: Introductionmentioning

confidence: 99%

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Current rectification by molecules with asymmetric tunneling barriers

2002

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A simple experimentally accessible realization of current rectification by molecules (molecular films) bridging metal electrodes is described. It is based on the spatial asymmetry of the molecule and requires only one resonant conducting molecular level (π orbital). The rectification, which is due to asymmetric coupling of the level to the electrodes by tunnel barriers, is largely independent of the work function difference between the two electrodes. Results of extensive numerical studies of the family of suggested molecular rectifiers HS-(CH2)m-C6H4-(CH2)n-SH are presented. The highest rectification ratio ∼ 500 is achieved at m = 2 and n = 10.

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“…self-assembly instead of LB deposition, and therefore more conductive. Indeed, the currents reported in [3] were of order 10…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Current rectification by molecules with asymmetric tunneling barriers

2002

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“…34 Recently, multilayers of 1 on HOPG were studied using a Pt/Ir nanotip at room temperature in air by STM and STS. 35,36 Asymmetries were seen in the I±V plot for a 15-layer ®lm (Fig. 11); 35 the corresponding STM images were of a superstructure of graphite.…”

Section: Nanoscopic Conductivity Of Lb Filmsmentioning

confidence: 91%

“…Visible spectrum of an 11-layer LB ®lm of 1 on quartz. The narrow absorbance has a peak at 570 nm (2.17 eV) 35 41 …”

Section: Pockels±langmuir Monolayers At the Air±water Interfacementioning

confidence: 99%

Demonstration of unimolecular electrical rectification in hexadecylquinolinium tricyanoquinodimethanide

Metzger

1998

Adv. Mater. Opt. Electron.

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Asymmetries in the macroscopic and the nanoscopic DC electrical conductivity through Langmuir–Blodgett multilayers and monolayers of γ‐(n‐hexadecyl)quinolinium tricyanoquinodimethanide (HDQ‐3CNQ, 1) are due to a transition from the ground‐state zwitterion to a probably neutral excited‐state conformer, thus confirming without a shadow of a doubt the rectification of electrical current by a single molecule. © 1998 John Wiley & Sons, Ltd.

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Hexadecylquinolinium tricyanoquinodimethanide, a unimolecular rectifier between 370 and 105 K and its spectroscopic properties

Metzger

1999

Adv. Mater. Opt. Electron.

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Is Ashwell's zwitterion a molecular diode?

Cited by 38 publications

References 8 publications

Current rectification by molecules with asymmetric tunneling barriers

Current rectification by molecules with asymmetric tunneling barriers

Demonstration of unimolecular electrical rectification in hexadecylquinolinium tricyanoquinodimethanide

Hexadecylquinolinium tricyanoquinodimethanide, a unimolecular rectifier between 370 and 105 K and its spectroscopic properties

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