Charge Transfer in High-Energy Fragmentation

1973 ◽  
Vol 7 (5) ◽  
pp. 1425-1428 ◽  
Author(s):  
T. T. Chou ◽  
Chen Ning Yang
Keyword(s):  
Charge Transfer ◽  
High Energy

scholarly journals Ultrafast charge transfer dynamics in 2D Covalent Organic Frameworks/Re-complex hybrid photocatalyst for CO2 reduction: hot electrons vs. cold electrons

2021 ◽  
Author(s):  
Qinying Pan ◽  
Mohamed Abdellah ◽  
Yuehan Cao ◽  
Yang Liu ◽  
Weihua Lin ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Excitation Energy ◽  
Co2 Reduction ◽  
Underlying Mechanism ◽  
High Energy ◽  
Hot Electrons ◽  
Covalent Organic Frameworks ◽  
Energy Excitation ◽  
Energy Dependent

Abstract Rhenium(I)-carbonyl-diimine complexes are promising photocatalysts for CO2 reduction. Covalent organic frameworks (COFs) can be perfect sensitizers to enhance the reduction activities. Here we investigated the excited state dynamics of COF (TpBpy) with 2,2'-bipyridine incorporating Re(CO)5Cl (Re-TpBpy) to rationalize the underlying mechanism. The time-dependent DFT calculation first clarified excited state structure of the hybrid catalyst. The studies from transient visible and infrared spectroscopies revealed the excitation energy-dependent photo-induced charge transfer pathways in Re-TpBpy. Under low energy excitation, the electrons at the LUMO level are quickly injected from Bpy into ReI center (1–2 ps) followed by backward recombination (13 ps). Under high energy excitation, the hot-electrons are first injected into the higher unoccupied level of ReI center (1–2 ps) and then slowly relax back to the HOMO in COF (24 ps). There also remains long-lived free electrons in the COF moiety. This explained the excitation energy-dependent CO2 reduction performance in our system.

scholarly journals Interfacing High‐Energy Charge‐Transfer States to a Near‐IR Sensitizer for Efficient Electron Transfer upon Near‐IR Irradiation

2020 ◽  
Vol 59 (52) ◽  
pp. 23697-23705
Author(s):  
Dilip Pinjari ◽  
Ajyal Z. Alsaleh ◽  
Yuvraj Patil ◽  
Rajneesh Misra ◽  
Francis D'Souza
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Energy Charge ◽  
High Energy ◽  
Near Ir

Charge transfer in collisions of atomic hydrogen withN7+ions in the high-energy region

1987 ◽  
Vol 36 (4) ◽  
pp. 1656-1662 ◽  
Author(s):  
G. C. Saha ◽  
Shyamal Datta ◽  
S. C. Mukherjee
Keyword(s):  
Charge Transfer ◽  
Atomic Hydrogen ◽  
Energy Region ◽  
High Energy ◽  
High Energy Region

scholarly journals Mechanisms of triplet energy transfer across the inorganic nanocrystal/organic molecule interface

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Xiao Luo ◽  
Yaoyao Han ◽  
Zongwei Chen ◽  
Yulu Li ◽  
Guijie Liang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Charge Transfer ◽  
Organic Molecule ◽  
Transient Absorption ◽  
High Energy ◽  
Model Systems ◽  
Trap States ◽  
Triplet Energy ◽  
Surface Trap ◽  
Triplet Energy Transfer

AbstractThe mechanisms of triplet energy transfer across the inorganic nanocrystal/organic molecule interface remain poorly understood. Many seemingly contradictory results have been reported, mainly because of the complicated trap states characteristic of inorganic semiconductors and the ill-defined relative energetics between semiconductors and molecules used in these studies. Here we clarify the transfer mechanisms by performing combined transient absorption and photoluminescence measurements, both with sub-picosecond time resolution, on model systems comprising lead halide perovskite nanocrystals with very low surface trap densities as the triplet donor and polyacenes which either favour or prohibit charge transfer as the triplet acceptors. Hole transfer from nanocrystals to tetracene is energetically favoured, and hence triplet transfer proceeds via a charge separated state. In contrast, charge transfer to naphthalene is energetically unfavourable and spectroscopy shows direct triplet transfer from nanocrystals to naphthalene; nonetheless, this “direct” process could also be mediated by a high-energy, virtual charge-transfer state.

Charge transfer in quasi-one-electron systems at 'high' energy

1988 ◽  
Vol 21 (15) ◽  
pp. L467-L472 ◽  
Author(s):  
T J Gay ◽  
E Redd ◽  
D M Blankenship ◽  
J T Park ◽  
J L Peacher ◽  
...  
Keyword(s):  
Charge Transfer ◽  
High Energy ◽  
Electron Systems

scholarly journals Titelbild: Interfacing High‐Energy Charge‐Transfer States to a Near‐IR Sensitizer for Efficient Electron Transfer upon Near‐IR Irradiation (Angew. Chem. 52/2020)

2020 ◽  
Vol 132 (52) ◽  
pp. 23549-23549
Author(s):  
Dilip Pinjari ◽  
Ajyal Z. Alsaleh ◽  
Yuvraj Patil ◽  
Rajneesh Misra ◽  
Francis D'Souza
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Energy Charge ◽  
High Energy ◽  
Near Ir

Enhanced Intersystem Crossing via a High Energy Charge Transfer State in a Perylenediimide−Perylenemonoimide Dyad

2008 ◽  
Vol 112 (37) ◽  
pp. 8617-8632 ◽  
Author(s):  
Dirk Veldman ◽  
Stéphanie M. A. Chopin ◽  
Stefan C. J. Meskers ◽  
René A. J. Janssen
Keyword(s):  
Charge Transfer ◽  
Energy Charge ◽  
High Energy ◽  
Charge Transfer State ◽  
Intersystem Crossing ◽  
Transfer State

In situ observation of charge transfer and crystal field formation via high energy resolution X-ray spectroscopy during temperature programmed oxidation

2020 ◽  
Vol 22 (26) ◽  
pp. 14731-14735
Author(s):  
Anna Wach ◽  
Wojciech Błachucki ◽  
Joanna Czapla-Masztafiak ◽  
Daniel Luis Abreu Fernandes ◽  
Dariusz Banaś ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Energy Resolution ◽  
High Energy ◽  
High Energy Resolution ◽  
In Situ Observation ◽  
X Ray ◽  
Temperature Programmed Oxidation ◽  
Temperature Programmed ◽  
Charge Transfer Dynamics ◽  
Field Formation

In this paper, we demonstrated how high energy resolution resonant X-ray emission spectroscopy can be employed to study the charge transfer dynamics in real-time during the temperature-induced oxidation of metallic tungsten.

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