Fluorinated/non-fluorinated bisphenoxy benzyl ether zinc(II) phthalocyanine: Synthesis, photoinduced intramolecular electron transfer and intermolecular energy transfer

2020 ◽  
Vol 222 ◽  
pp. 117163
Author(s):  
Ruotao Guo ◽  
Kuizhi Chen ◽  
Zhiqiang Yu ◽  
Qiuhao Ye ◽  
Wenling Xiao ◽  
...  
2021 ◽  
Vol 23 (12) ◽  
pp. 7495-7503
Author(s):  
Wanlin Cai ◽  
Kai Ren ◽  
Ancong Zhao ◽  
Xiulan Wu ◽  
Rongxing He ◽  
...  

Compared to the PtOO7-based system, the greater EQE of the PtON7-based system is mainly governed by the stronger energy transfer efficiency (ηEET); thus, it is necessary to evaluate ηEET from hosts to guests for the rational design of OLEDs.


2009 ◽  
Vol 11 (40) ◽  
pp. 9033 ◽  
Author(s):  
L. Piatkowski ◽  
K. B. Eisenthal ◽  
H. J. Bakker

2011 ◽  
Vol 13 (11) ◽  
pp. 2802-2805 ◽  
Author(s):  
Minhee Lee ◽  
Matthew S. Tremblay ◽  
Steffen Jockusch ◽  
Nicholas J. Turro ◽  
Dalibor Sames

2001 ◽  
Vol 665 ◽  
Author(s):  
P.A. van Hal ◽  
R.A.J. Janssen ◽  
G. Lanzani ◽  
G. Cerullo ◽  
M. Zavelani-Rossi ◽  
...  

ABSTRACTThe intramolecular photoinduced energy and electron transfer within a fullereneoligothiophene-fullerene triad with nine thiophene units (C60-9T-C60) and an oligo(p-phenylene vinylene)-fullerene dyad with four phenyl groups (OPV4-C60) is investigated with femtosecond pump-probe spectroscopy with sub-10 fs and 200 fs time resolution in solvents of different polarity. Photoexcitation of the π-conjugated oligomer moiety in the triad and dyad results in an ultrafast singlet-energy transfer reaction to create the fullerene singlet-excited state with a time constant of 150-190 fs, irrespective of the polarity of the medium. In a polar solvent, intramolecular electron transfer occurs from the oligomer moiety to the C60 moiety with a time constant of 10-13 ps as a secondary reaction, subsequent to the ultrafast singlet-energy transfer. The charge-separated state has a lifetime of 50-80 ps and recombines to the ground state.


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