Related Experiment Video
Updated: Jan 24, 2026

Single-Molecule Förster Resonance Energy Transfer Methods for Real-Time Investigation of the Holliday Junction Resolution by GEN1
Published on: September 18, 2019
Stretch dependent electronic structure and vibrational energy of the bipyridine single molecule junction
S Kobayashi1, S Kaneko1, S Fujii1
1Department of Chemistry, Tokyo Institute of Technology, 2-12-1 W4-10 Ookayama, Meguro-ku, 152-8551, Tokyo, Japan. kiguti@chem.titech.ac.jp.
Abstract:
We have studied the stretch dependence of the electronic structure and vibrational energy for the 4,4'-bipyridine (BPY) single molecule junction, which was fabricated by the mechanically controllable break junction (MCBJ) using the highly stable nano MCBJ electrodes. The electronic structure and vibrational energy of the single molecule junction were studied by the current-voltage (I-V) curve and surface enhanced Raman scattering (SERS), respectively. The simultaneous SERS and I-V curve measurements revealed the lowest unoccupied molecular orbital (LUMO) and vibrational energy of the C-C stretching mode decreased with an increase in the metal-molecule distance. The molecular orbital energy shift and vibrational energy shift can be explained by the change in the degree of the hybridization of molecular and metal orbitals.
More Related Videos
09:51A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure
Published on: February 20, 2019
12:05A Simple, Robust, and High Throughput Single Molecule Flow Stretching Assay Implementation for Studying Transport of Molecules Along DNA
Published on: October 1, 2017
Related Concept Videos
What is Energy?
Energy Basics
Temperature Dependence on Reaction Rate
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
Sugars as Energy Storage Molecules
Fats as Energy Storage Molecules
Electronic Structure of Atoms
An atom comprises protons and neutrons, which are contained inside the dense, central core called the nucleus, with electrons present around the nucleus. Taking into account the wave–particle duality of electrons and the uncertainty in position around the nucleus, quantum mechanics provides a more accurate model for the atomic structure. It describes atomic orbitals as the regions around the nucleus where electrons of discrete energy exist, characterized by four quantum...