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Related Concept Videos

Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The semiconductor's...
Stability of Conjugated Dienes01:28

Stability of Conjugated Dienes

Introduction
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
Biasing of Metal-Semiconductor Junctions01:27

Biasing of Metal-Semiconductor Junctions

Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)

Vicinal or three-bond coupling is commonly observed between protons attached to adjacent carbons. Here, nuclear spin information is primarily transferred via electron spin interactions between adjacent C‑H bond orbitals. This generally favors the antiparallel arrangement of spins, so 3J values are usually positive.
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...
Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...

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Updated: Jun 12, 2026

Multifunctional, Micropipette-based Method for Incorporation And Stimulation of Bacterial Mechanosensitive Ion Channels in Droplet Interface Bilayers
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Efficient electronic coupling and improved stability with dithiocarbamate-based molecular junctions.

Florian von Wrochem1, Deqing Gao, Frank Scholz

  • 1Sony Deutschland GmbH, Materials Science Laboratory, Hedelfinger Strasse 61, 70327 Stuttgart, Germany. Florian.vonWrochem@eu.sony.com

Nature Nanotechnology
|June 22, 2010
PubMed
Summary
This summary is machine-generated.

Dithiocarbamates form superior molecular contacts for electronics compared to thiols, offering enhanced conductivity and stability. This breakthrough advances the development of robust organic electronic circuits.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Organic Electronics

Background:

  • Molecular electronic devices need stable, conductive metal-molecule contacts.
  • Current methods using thiols and amines yield poor electrical contacts and lack robustness.

Purpose of the Study:

  • To investigate dithiocarbamates as a superior alternative to thiols for metal-molecule contacts in molecular electronics.
  • To evaluate the electrical contact properties and thermal stability of dithiocarbamate-based interfaces.

Main Methods:

  • Ultraviolet photoelectron spectroscopy (UPS) to analyze electronic states at the metal-molecule interface.
  • Density functional theory (DFT) calculations to understand electronic structure.
  • Charge transport measurements on oligophenylene monolayers to assess conductance.

Main Results:

  • Dithiocarbamates exhibit significantly higher thermal stability and electrical conductivity compared to thiols.
  • Electronic states below the Fermi level of gold (Au) were identified, reducing the charge injection barrier.
  • Terphenyl-dithiocarbamate junctions showed two orders of magnitude higher conductance than terphenyl-thiolate junctions.

Conclusions:

  • Dithiocarbamates offer superior electrical contact and thermal stability for molecular electronic devices.
  • The findings represent a significant advancement for creating robust, organic-based electronic circuits.