EMI Series Mechanistic Investigation of a Visible Light Mediated Dehalogenation/Cyclisation Reaction using Iron(III), Iridium(III) and Ruthenium(II) Photosensitizers

2021 ◽  
Author(s):  
Akin Aydogan ◽  
Rachel Bangle ◽  
Simon De Kreijger ◽  
John Dickenson ◽  
Michael L Singleton ◽  
...  
Keyword(s):  
Steady State ◽  
Visible Light ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Time Resolved ◽  
Femtosecond Transient Absorption ◽  
Mechanistic Investigation ◽  
Femtosecond Transient Absorption Spectroscopy ◽  
Visible Light Driven ◽  
Time Resolved Infrared Spectroscopy

The mechanism of a visible light-driven dehalogenation/cyclization reaction was investigated using ruthenium(II), iridium(III) and iron(III) photosensitizers by means of steady-state photoluminescence, time-resolved infrared spectroscopy, and nanosecond/femtosecond transient absorption spectroscopy. The...

Charge carrier kinetics of carbon nitride colloid: a femtosecond transient absorption spectroscopy study

2016 ◽  
Vol 18 (22) ◽  
pp. 14904-14910 ◽  
Author(s):  
Huiyu Zhang ◽  
Yaping Chen ◽  
Rong Lu ◽  
Ruiyu Li ◽  
Anchi Yu
Keyword(s):  
Charge Carrier ◽  
Carbon Nitride ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Spectroscopy Study ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Femtosecond Transient Absorption ◽  
Femtosecond Transient Absorption Spectroscopy ◽  
Kinetics Of

The charge carrier kinetics of carbon nitride colloid was investigated using a combination of femtosecond transient absorption and picosecond time-resolved fluorescence spectroscopy.

Femtosecond spectroscopy and TD-DFT calculations of CuCl42− excited states

2014 ◽  
Vol 43 (47) ◽  
pp. 17820-17827 ◽  
Author(s):  
Elena N. Golubeva ◽  
Ekaterina M. Zubanova ◽  
Michail Ya. Melnikov ◽  
Fedor E. Gostev ◽  
Ivan V. Shelaev ◽  
...  
Keyword(s):  
Steady State ◽  
Dft Calculations ◽  
Excited States ◽  
Transient Absorption ◽  
Femtosecond Spectroscopy ◽  
Transient Absorption Spectroscopy ◽  
Femtosecond Transient Absorption ◽  
Td Dft ◽  
Femtosecond Transient Absorption Spectroscopy ◽  
Photoinduced Processes

Photoinduced processes of tetrahexylammonium tetrachlorocuprate [(C6H13)4N]2CuIICl4 in chloro-organic solvents were investigated by steady state photolysis and femtosecond transient absorption spectroscopy, as well as TD-DFT calculations of excited terms.

Electron photoejection from dianion of an expanded phthalocyanine

2018 ◽  
Vol 22 (05) ◽  
pp. 437-442
Author(s):  
Yun Hee Koo ◽  
Ryo Yanagisawa ◽  
Won-Young Cha ◽  
Taniyuki Furuyama ◽  
Nagao Kobayashi ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Steady State ◽  
Radical Anion ◽  
Transient Absorption ◽  
Magnetic Circular Dichroism ◽  
Chemical Reduction ◽  
Transient Absorption Spectroscopy ◽  
Femtosecond Transient Absorption ◽  
Femtosecond Transient Absorption Spectroscopy ◽  
Steady State Absorption

Photoelectron ejection from the dianion of pentabenzotriazasmaragdyrin (PBTAS) which is an expanded phthalocyanine, is observed using femtosecond transient absorption spectroscopy. The PBTAS dianion was produced by chemical reduction using excess cobaltocene as a reductant, which was confirmed by their steady-state absorption spectrum as compared to the absorption spectrum obtained by electrochemical reduction, and characterized by magnetic circular dichroism (MCD). Upon photoexcitation of the PBTASdianion, the generation of a radical anion was confirmed by the characteristic absorption peaks that are observed at 950 and 1000 nm. The radical anion was relaxed to form a dianion with a time constant of 0.7 ps.

scholarly journals Ultrafast nonequilibrium dynamic process of separate electron and hole during exciton formation in few-layer tungsten disulfide

2021 ◽  
Author(s):  
Junjie Chen ◽  
Sen Guo ◽  
Dabin Lin ◽  
Zhaogang Nie ◽  
Chung-Che Huang ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Dynamic Process ◽  
Formation Process ◽  
Transient Absorption ◽  
Tungsten Disulfide ◽  
Transient Absorption Spectroscopy ◽  
Femtosecond Transient Absorption ◽  
Nonequilibrium Dynamic ◽  
Femtosecond Transient Absorption Spectroscopy ◽  
Separate Electron

Femtosecond transient absorption spectroscopy has been employed to unravel separate initial nonequilibrium dynamic process of photo-injected electrons and holes during the formation process of the lowest excitons at the K-valley...

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