Fine tuning of electron transfer and spin chemistry parameters in triarylamine–bridge–naphthalene diimide dyads by bridge substituents

2018 ◽  
Vol 20 (42) ◽  
pp. 27093-27104 ◽  
Author(s):  
Julian Schäfer ◽  
Marco Holzapfel ◽  
Alexander Schmiedel ◽  
Ulrich E. Steiner ◽  
Christoph Lambert
Keyword(s):  
Magnetic Field ◽  
Electron Transfer ◽  
Charge Recombination ◽  
Fine Tuning ◽  
Spin Chemistry ◽  
Naphthalene Diimide ◽  
Field Dependent ◽  
Donor Acceptor

A series of donor–acceptor dyads with diverse meta-conjugated benzene bridges show a pronounced magnetic field dependent charge recombination.

J-Resonance Line Shape of Magnetic Field-Affected Reaction Yield Spectrum from Charge Recombination in a Linked Donor–Acceptor Dyad

2018 ◽  
Vol 122 (22) ◽  
pp. 11701-11708 ◽  
Author(s):  
Ulrich E. Steiner ◽  
Julian Schäfer ◽  
Nikita N. Lukzen ◽  
Christoph Lambert
Keyword(s):  
Magnetic Field ◽  
Line Shape ◽  
Resonance Line ◽  
Charge Recombination ◽  
Reaction Yield ◽  
Donor Acceptor

scholarly journals Spin Chemistry Investigation of Peculiarities of Photoinduced Electron Transfer in Donor–Acceptor Linked System

2011 ◽  
Vol 41 (2-4) ◽  
pp. 205-220 ◽  
Author(s):  
I. M. Magin ◽  
N. E. Polyakov ◽  
E. A. Khramtsova ◽  
A. I. Kruppa ◽  
A. A. Stepanov ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Spin Chemistry ◽  
Donor Acceptor

Spin-dependent electron transfer dynamics in a platinum-complex–donor–acceptor triad studied by transient-absorption detected magnetic field effect

2019 ◽  
Vol 151 (23) ◽  
pp. 234306 ◽  
Author(s):  
Tomoaki Miura ◽  
Kio Miyaji ◽  
Takafumi Horikoshi ◽  
Shuichi Suzuki ◽  
Masatoshi Kozaki ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electron Transfer ◽  
Field Effect ◽  
Transient Absorption ◽  
Platinum Complex ◽  
Magnetic Field Effect ◽  
Donor Acceptor

Long-lived charge-separated states of simple electron donor-acceptor dyads using porphyrins and phthalocyanines

2008 ◽  
Vol 12 (09) ◽  
pp. 993-1004 ◽  
Author(s):  
Kei Ohkubo ◽  
Shunichi Fukuzumi
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Electron Donor ◽  
Driving Force ◽  
Reorganization Energy ◽  
Charge Recombination ◽  
Zinc Phthalocyanine ◽  
Intramolecular Electron Transfer ◽  
Triplet Excited State ◽  
Donor Acceptor

Control of electron-transfer processes is described for a number of electron donor-acceptor dyads containing porphyrins or phthalocyanines as models for the photosynthetic reaction center. The rates for intramolecular electron transfer in the dyads are controlled by the driving force and reorganization energy of electron transfer. The small reorganization energy of electron transfer reactions and large driving force of charge recombination are required to form long-lived charge-separated states. A directly linked zinc chlorin-fullerene dyad, especially, has the longest lifetime of charge-separated state at 120 s at -150 °C, which is a much longer lifetime and higher energy than those of natural photosynthetic reaction centers. On the other hand, the charge-separated states of the phthalocyanine-based donor-acceptor dyads (silicon phthalocyanine-fullerene, and zinc phthalocyanine-perylenebisimide) are short-lived since charge recombination forms the low-lying triplet excited state of the chromophore. The energy of the charge-separated state of a zinc phthalocyanine-perylenebisimide dyad is decreased by binding of metal ions to the radical anion moiety in order to be lower than the triplet excited state. This results in formation of a long-lived charge-separated state. The mechanistic viability of formation of long-lived charge-separated states is demonstrated by a variety of examples based on the Marcus theory of electron transfer.

Corrole–ferrocene and corrole–anthraquinone dyads: synthesis, spectroscopy and photochemistry

2015 ◽  
Vol 17 (40) ◽  
pp. 26607-26620 ◽  
Author(s):  
Jaipal Kandhadi ◽  
Venkatesh Yeduru ◽  
Prakriti R. Bangal ◽  
Lingamallu Giribabu
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Charge Separation ◽  
Photoinduced Electron Transfer ◽  
Charge Recombination ◽  
Transfer Rates ◽  
Donor Acceptor

Two different donor–acceptor systems based on corrole–ferrocene (Cor–Fc) and corrole–anthraquinone (Cor–AQ) have been designed and synthesized. Excited state properties of these dyads indicates intramolecular photoinduced electron transfer (PET) take place in these dyads and the electron-transfer rates (kET) was found to be ∼1011s−1. The charge separation (CS) and charge recombination (CR) are found to be identical.

Electron Transfer and Magnetic Field Effects in Donor-Acceptor Systems Linked by a Hydrocarbon Chain Incorporating Phenyl Groups

1995 ◽  
Vol 188 (Part_1_2) ◽  
pp. 61-73 ◽  
Author(s):  
H. Staerk ◽  
W. Kühnle ◽  
A. Weller ◽  
U. Werner
Keyword(s):  
Magnetic Field ◽  
Electron Transfer ◽  
Hydrocarbon Chain ◽  
Magnetic Field Effects ◽  
Field Effects ◽  
Donor Acceptor

Effect of Donor-Acceptor Orientation on Ultrafast Photoinduced Electron Transfer and Dark Charge Recombination in Porphyrin-Quinone Molecules

1994 ◽  
Vol 116 (15) ◽  
pp. 6904-6909 ◽  
Author(s):  
Yoshiteru Sakata ◽  
Hirohito Tsue ◽  
Michael P. O'Neil ◽  
Gary P. Wiederrecht ◽  
Michael R. Wasielewski
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Charge Recombination ◽  
Donor Acceptor

MAGNETIC FIELD DEPENDENT RESTSTRAHLEN SPECTRA IN PARAMAGNETIC CeF3

1981 ◽  
Vol 42 (C6) ◽  
pp. C6-499-C6-501 ◽  
Author(s):  
H. Gerlinger ◽  
G. Schaack
Keyword(s):  
Magnetic Field ◽  
Field Dependent
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