scholarly journals Excess electron relaxation dynamics at water/air interfaces

2007 ◽  
Vol 126 (23) ◽  
pp. 234707 ◽  
Author(s):  
Ádám Madarász ◽  
Peter J. Rossky ◽  
László Turi
Keyword(s):  
Excess Electron ◽  
Relaxation Dynamics ◽  
Electron Relaxation ◽  
Air Interfaces

Skin Bond Electron Relaxation Dynamics of Germanium Manipulated by Interactions with H2 , O2 , H2 O, H2 O2 , HF, and Au

ChemPhysChem ◽  
2015 ◽  
Vol 17 (2) ◽  
pp. 310-316 ◽  
Author(s):  
Lihong Wu ◽  
Maolin Bo ◽  
Yongling Guo ◽  
Yan Wang ◽  
Can Li ◽  
...  
Keyword(s):  
Relaxation Dynamics ◽  
Electron Relaxation

scholarly journals Photoexcitation of Ge9− Clusters in THF: New Insights into the Ultrafast Relaxation Dynamics and the Influence of the Cation

Molecules ◽  
2020 ◽  
Vol 25 (11) ◽  
pp. 2639
Author(s):  
Nadine C. Michenfelder ◽  
Christian Gienger ◽  
Melina Dilanas ◽  
Andreas Schnepf ◽  
Andreas-Neil Unterreiner
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Conduction Band ◽  
Near Infrared ◽  
Transient Absorption ◽  
Time Window ◽  
Excess Electron ◽  
Cluster Core ◽  
Relaxation Dynamics ◽  
Additional Time

We present a comprehensive femtosecond (fs) transient absorption study of the [Ge9(Hyp)3]− (Hyp = Si(SiMe3)3) cluster solvated in tetrahydrofuran (THF) with special emphasis on intra- and intermolecular charge transfer mechanisms which can be tuned by exchange of the counterion and by dimerization of the cluster. The examination of the visible and the near infrared (NIR) spectral range reveals four different processes of cluster dynamics after UV (267/258 nm) photoexcitation related to charge transfer to solvent and localized excited states in the cluster. The resulting transient absorption is mainly observed in the NIR region. In the UV-Vis range transient absorption of the (neutral) cluster core with similar dynamics can be observed. By transferring concepts of: (i) charge transfer to the solvent known from solvated Na− in THF and (ii) charge transfer in bulk-like materials on metalloid cluster systems containing [Ge9(Hyp)3]− moieties, we can nicely interpret the experimental findings for the different compounds. The first process occurs on a fs timescale and is attributed to localization of the excited electron in the quasi-conduction band/excited state which competes with a charge transfer to the solvent. The latter leads to an excess electron initially located in the vicinity of the parent cluster within the same solvent shell. In a second step, it can recombine with the cluster core with time constants in the picosecond (ps) timescale. Some electrons can escape the influence of the cluster leading to a solvated electron or after interaction with a cation to a contact pair both with lifetimes exceeding our experimentally accessible time window of 1 nanosecond (ns). An additional time constant on a tens of ps timescale is pronounced in the UV-Vis range which can be attributed to the recombination rate of the excited state or quasi conduction band of Ge9−. In the dimer, the excess electron cannot escape the molecule due to strong trapping by the Zn cation that links the two cluster cores.

Electron relaxation dynamics of Mu ALCR spectra

1991 ◽  
Vol 152 (3) ◽  
pp. 353-364 ◽  
Author(s):  
S.R. Kreitzman
Keyword(s):  
Relaxation Dynamics ◽  
Electron Relaxation

Hot electron relaxation dynamics in ZnSe

1997 ◽  
Vol 71 (8) ◽  
pp. 1089-1091 ◽  
Author(s):  
Manjusha Mehendale ◽  
S. Sivananthan ◽  
W. Andreas Schroeder
Keyword(s):  
Hot Electron ◽  
Relaxation Dynamics ◽  
Electron Relaxation

Evolution of nonthermal electrons in pump-probe electron relaxation dynamics

2021 ◽  
Author(s):  
Meng Xing Na ◽  
Fabio Boschini ◽  
Arthur K. Mills ◽  
Matteo Michiardi ◽  
Ryan P. Day ◽  
...  
Keyword(s):  
Relaxation Dynamics ◽  
Pump Probe ◽  
Nonthermal Electrons ◽  
Electron Relaxation

Inter-conduction band electron relaxation dynamics in 6H–SiC

2001 ◽  
Vol 79 (9) ◽  
pp. 1279-1281 ◽  
Author(s):  
T. Tomita ◽  
S. Saito ◽  
T. Suemoto ◽  
H. Harima ◽  
S. Nakashima
Keyword(s):  
Conduction Band ◽  
Relaxation Dynamics ◽  
Band Electron ◽  
Conduction Band Electron ◽  
Electron Relaxation

Hot‐electron relaxation dynamics in quantum wires

1994 ◽  
Vol 76 (2) ◽  
pp. 1021-1028 ◽  
Author(s):  
R. Gaška ◽  
R. Mickevičius ◽  
V. Mitin ◽  
Michael A. Stroscio ◽  
Gerald J. Iafrate ◽  
...  
Keyword(s):  
Quantum Wires ◽  
Hot Electron ◽  
Relaxation Dynamics ◽  
Electron Relaxation

Electron relaxation dynamics and Aharonov–Bohm phase control of transport through a parallel double-dot device

2002 ◽  
Vol 314 (1-4) ◽  
pp. 503-506
Author(s):  
L.G. Mourokh ◽  
A.Yu. Smirnov ◽  
V.I. Puller ◽  
N.J.M. Horing
Keyword(s):  
Phase Control ◽  
Relaxation Dynamics ◽  
Electron Relaxation ◽  
Aharonov Bohm
Sign in / Sign up

Export Citation Format

Share Document