Overview of project A06

Non-Equilibrium Charge Transfer between Solids and Adsorbates in Vacuum and at Electrified Solid / Liquid Interfaces

Campen, Hasselbrink,Tong

In electrochemistry charge transfer between solid and electrolyte is fundamental. While prior studies clearly show that all aspects of the interface influence electron transfer rates, experimental insight into mechanism has been limited. In project A06 we address this problem by initiating electron transfer with a short laser pulse and tracking the correlated structural changes, principally using several types of surface sensitive vibrational spectroscopy. That allows us to track the temporal evolution as the electron moves between solid and electrolyte. In particular we will elucidate the role of non-bonded interactions in controlling chemistry using 2D vibrational techniques.

Fig A06

Download Hot electron driven charge transfer dynamics at the MoS2/gold interface

Project A06

Download Ultrafast vibrational dynamics of CH-stretch modes of surface adsorbates

Project A06

Publications


2023

Tao Yang, Erik Pollmann, Stephan Sleziona, Eckart Hasselbrink, Peter Kratzer, Marika Schleberger, Richard Kramer Campen and Yujin Tong
Interaction Between a Gold Substrate and Monolayer MoS2: An Azimuthal-Dependent Sum Frequency Generation Study
Phys. Rev. B 107, 155433 (2023)
DOI: 10.1103/physrevb.107.155433

Yujin Tong
Linear vs. Nonlinear Electrochemical Vibrational Stark Effect: Preconditions of the Approximation
Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, ed. Jan Reedijk, pp. 750 (Amsterdam, 2024)
DOI: 10.1016/B978-0-323-85669-0.00073-8

Xin Gong, R. Kramer Campen and Yujin Tong
Direct Observation of the Potential-Dependent Protonation and Reorientation of 4-(Dimethylamino)pyridine on Gold Electrodes
J. Phys. Chem. C 127, 16615 (2023)
DOI: 10.1021/acs.jpcc.3c03038

 

2021

Gregor Zwaschka, François Lapointe, Richard Kramer Campen and Yujin Tong
Characterization of Ultrafast Processes at Metal/Solution Interfaces
Curr. Opin. Electrochem. 29, 100813 (2021)
DOI: 10.1016/j.coelec.2021.100813

Joscha Hekele, Matthias Linke, Thomas Keller, Jesil Jose, Marvin Hille, Eckart Hasselbrink, Sebastian Schlücker and Peter Kratzer
A Fresh Look at the Structure of Aromatic Thiols on Au Surfaces from Theory and Experiment
J. Chem. Phys. 155, 044707 (2021)
DOI: 10.1063/5.0053493