Intramolecular electron transfer reactions in meso-(4-nitrophenyl)-substituted subporphyrins

2016 ◽  
Vol 52 (7) ◽  
pp. 1424-1427 ◽  
Author(s):  
Graeme Copley ◽  
Juwon Oh ◽  
Kota Yoshida ◽  
Daiki Shimizu ◽  
Dongho Kim ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Absorption Spectroscopy ◽  
Charge Separation ◽  
Transient Absorption ◽  
Charge Recombination ◽  
Transient Absorption Spectroscopy ◽  
Transfer Reactions ◽  
Intramolecular Electron Transfer ◽  
Time Resolved ◽  
Electron Transfer Reactions

A2B-type meso-(4-nitrophenyl)-substituted subporphyrins have been synthesized and shown to undergo very fast photoinduced intramolecular charge separation (CS) and charge recombination (CR) between the subporphyrin core and the meso-4-nitrophenyl group in CH2Cl2 as probed by femtosecond time-resolved transient absorption spectroscopy.

scholarly journals Interaction of light with a non-covalent zinc porphyrin–graphene oxide nanohybrid

2020 ◽  
Vol 22 (24) ◽  
pp. 13456-13466
Author(s):  
Ewelina Gacka ◽  
Gotard Burdzinski ◽  
Bronisław Marciniak ◽  
Adam Kubas ◽  
Anna Lewandowska-Andralojc
Keyword(s):  
Electron Transfer ◽  
Graphene Oxide ◽  
Absorption Spectroscopy ◽  
Fast Electron ◽  
Transient Absorption ◽  
Singlet State ◽  
Transient Absorption Spectroscopy ◽  
Time Resolved ◽  
Zinc Porphyrin

Fast electron transfer from the photoexcited ZnTPPH singlet state to GO sheets was detected by ultrafast time-resolved transient absorption spectroscopy.

Roles of adsorption sites in electron transfer from CdS quantum dots to molecular catalyst cobaloxime studied by time-resolved spectroscopy

2016 ◽  
Vol 18 (26) ◽  
pp. 17389-17397 ◽  
Author(s):  
Yun Ye ◽  
Yuxing Xu ◽  
Lei Huang ◽  
Dayong Fan ◽  
Zhaochi Feng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electron Transfer ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Cds Quantum Dots ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Molecular Catalyst ◽  
Adsorption Sites

Electron transfer from CdS quantum dots (QDs) to cobaloxime (Co(dmgH)2pyCl) is demonstrated by transient absorption spectroscopy (TAS), and further confirmed using photoluminescence (PL) techniques.

Cascading electron and hole transfer dynamics in a CdS/CdTe core–shell sensitized with bromo-pyrogallol red (Br-PGR): slow charge recombination in type II regime

Nanoscale ◽  
2015 ◽  
Vol 7 (6) ◽  
pp. 2698-2707 ◽  
Author(s):  
Partha Maity ◽  
Tushar Debnath ◽  
Uday Chopra ◽  
Hirendra Nath Ghosh
Keyword(s):  
Electron Transfer ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Charge Recombination ◽  
Transient Absorption Spectroscopy ◽  
Core Shell ◽  
Type Ii ◽  
Pyrogallol Red ◽  
First Time ◽  
Cdte Core

For the first time ultrafast cascading hole and electron transfer dynamics in a CdS/CdTe type II core–shell sensitized with a molecular adsorbate (Br-PGR) have been demonstrated using transient absorption spectroscopy.

Structure dependence of intramolecular electron transfer reactions of simple dyads of a zinc(ii) porphyrin complex bearing a peripheral bipyridine moiety

2017 ◽  
Vol 46 (37) ◽  
pp. 12645-12654 ◽  
Author(s):  
Kei Sakakibara ◽  
Shou Nagino ◽  
Hajime Akanuma ◽  
Yuki Tsukada ◽  
Hirofumi Nakano ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Charge Recombination ◽  
Transfer Reactions ◽  
Intramolecular Electron Transfer ◽  
Structure Dependence ◽  
Electron Transfer Reactions ◽  
Porphyrin Complex ◽  
Recombination Reactions

Photoinduced intramolecular electron transfer and charge recombination reactions were investigated using various Zn(ii)-porphyrin dyads having a 2,2′-bipyridine moiety.

Electron-transfer dyads suitable for novel self-assembled light-harvesting antenna/electron-transfer devices

2001 ◽  
Vol 73 (3) ◽  
pp. 469-474 ◽  
Author(s):  
Alfred R. Holzwarth ◽  
Martin Katterle ◽  
Marc G. Müller ◽  
Ying-Zong Ma ◽  
Valentin Prokhorenko
Keyword(s):  
Electron Transfer ◽  
Charge Separation ◽  
Transient Absorption ◽  
Fullerene C60 ◽  
Transient Absorption Spectroscopy ◽  
Time Range ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Light Harvesting Antenna

The synthesis and photophysical and photochemical characterization of four novel bacterio-chlorin-fullerene dyads with fullerene C60 coupled at various positions and by various bridges to the chlorin ring are described. All dyads undergo rapid charge separation in the sub-picosecond to picosecond time range as characterized by time-resolved fluorescence and transient absorption spectroscopy.

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