Probing the excited state dynamics of a new family of Cu(i)-complexes with an enhanced light absorption capacity: excitation-wavelength dependent population of states through branching

2013 ◽  
Vol 15 (31) ◽  
pp. 13128 ◽  
Author(s):  
Panagiotis A. Papanikolaou ◽  
Nikolai V. Tkachenko
Keyword(s):  
Excited State ◽  
Light Absorption ◽  
Absorption Capacity ◽  
Excitation Wavelength ◽  
Excited State Dynamics ◽  
New Family

The Excited-State Dynamics of Phycocyanobilin in Dependence on the Excitation Wavelength

ChemPhysChem ◽  
2004 ◽  
Vol 5 (8) ◽  
pp. 1171-1177 ◽  
Author(s):  
Benjamin Dietzek ◽  
Raman Maksimenka ◽  
Gudrun Hermann ◽  
Wolfgang Kiefer ◽  
Jürgen Popp ◽  
...  
Keyword(s):  
Excited State ◽  
Excitation Wavelength ◽  
Excited State Dynamics

scholarly journals Excited-State Dynamics of Hybrid Multichromophoric Systems: Toward an Excitation Wavelength Control of the Charge Separation Pathways

2009 ◽  
Vol 113 (29) ◽  
pp. 8202-8212 ◽  
Author(s):  
Natalie Banerji ◽  
Guillaume Duvanel ◽  
Alejandro Perez-Velasco ◽  
Santanu Maity ◽  
Naomi Sakai ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Separation ◽  
Excitation Wavelength ◽  
Excited State Dynamics ◽  
Wavelength Control

Excited state electron transfer after visible light absorption by the Co(i) state of vitamin B12

2014 ◽  
Vol 50 (87) ◽  
pp. 13304-13306 ◽  
Author(s):  
Darren Achey ◽  
Erinn C. Brigham ◽  
Brian N. DiMarco ◽  
Gerald J. Meyer
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Visible Light ◽  
Vitamin B12 ◽  
Light Absorption ◽  
Excitation Wavelength ◽  
Vitamin B ◽  
Visible Light Absorption ◽  
State Electron

The Co(i) form of vitamin B12 was found to undergo excitation wavelength-dependent excited state electron transfer to TiO2.

scholarly journals Excited state dynamics in photosystem I: effects of detergent and excitation wavelength

1995 ◽  
Vol 69 (5) ◽  
pp. 2044-2055 ◽  
Author(s):  
G. Hastings ◽  
L.J. Reed ◽  
S. Lin ◽  
R.E. Blankenship
Keyword(s):  
Excited State ◽  
Photosystem I ◽  
Excitation Wavelength ◽  
Excited State Dynamics

Spin-Forbidden Excitation Enables Infrared Photoredox Catalysis

2020 ◽  
Author(s):  
Tomislav Rovis ◽  
Benjamin D. Ravetz ◽  
Nicholas E. S. Tay ◽  
Candice Joe ◽  
Melda Sezen-Edmonds ◽  
...  
Keyword(s):  
Excited State ◽  
Ground State ◽  
Intersystem Crossing ◽  
Photoredox Catalysis ◽  
Infrared Irradiation ◽  
Triplet Excitation ◽  
New Family ◽  
Ir Light

We describe a new family of catalysts that undergo direct ground state singlet to excited state triplet excitation with IR light, leading to photoredox catalysis without the energy waste associated with intersystem crossing. The finding allows a mole scale reaction in batch using infrared irradiation.

Excited-State Dynamics in the RNA Nucleotide Uridine 5’-Monophosphate Investigated by Femtosecond Broadband Transient Absorption Spectroscopy

2019 ◽  
Author(s):  
Matthew M. Brister ◽  
Carlos Crespo-Hernández
Keyword(s):  
Excited State ◽  
Excited States ◽  
Ground State ◽  
Transient Absorption ◽  
Electronic Energy ◽  
Transient Absorption Spectroscopy ◽  
Electronic Relaxation ◽  
Vibrationally Excited ◽  
Excited State Dynamics ◽  
Π State

<p></p><p> Damage to RNA from ultraviolet radiation induce chemical modifications to the nucleobases. Unraveling the excited states involved in these reactions is essential, but investigations aimed at understanding the electronic-energy relaxation pathways of the RNA nucleotide uridine 5’-monophosphate (UMP) have not received enough attention. In this Letter, the excited-state dynamics of UMP is investigated in aqueous solution. Excitation at 267 nm results in a trifurcation event that leads to the simultaneous population of the vibrationally-excited ground state, a longlived <sup>1</sup>n<sub>O</sub>π* state, and a receiver triplet state within 200 fs. The receiver state internally convert to the long-lived <sup>3</sup>ππ* state in an ultrafast time scale. The results elucidate the electronic relaxation pathways and clarify earlier transient absorption experiments performed for uracil derivatives in solution. This mechanistic information is important because long-lived nπ* and ππ* excited states of both singlet and triplet multiplicities are thought to lead to the formation of harmful photoproducts.</p><p></p>

Modulation of Excited State Dynamics in Lead Halide Perovskite Films with Electrical Bias

2019 ◽  
Author(s):  
Gergely Samu ◽  
R.A. Scheidt ◽  
A. Balog ◽  
C. Janáky ◽  
P.V. Kamat
Keyword(s):  
Excited State ◽  
Excited State Dynamics ◽  
Halide Perovskite ◽  
Electrical Bias ◽  
Lead Halide
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