Photophysical Properties and Performance of Semiconducting Block Copolymers

2012 ◽  
Vol 568 ◽  
pp. 376-379
Author(s):  
Li Guo ◽  
Yong Guo Zhang ◽  
Jian Qiang Hu
Keyword(s):  
Electron Transfer ◽  
Block Copolymers ◽  
Diblock Copolymer ◽  
Photophysical Properties ◽  
Phenylene Vinylene ◽  
Donor Acceptor ◽  
And Performance

The covalent incorporation of C60 into one block of a poly(1,4-(2,5-dioctyloxy)phenylene vinylene)-based diblock copolymer resulted in a donor–acceptor diblock copolymer, which demonstrated a very efficient electron transfer upon excitation of the PPV block. The strong quenching of the photoluminescence from the PPV block indicated an efficient electron transfer at the donor–acceptor interface.

Electronic energy and electron transfer processes in photoexcited donor–acceptor dyad and triad molecular systems based on triphenylene and perylene diimide units

2016 ◽  
Vol 18 (11) ◽  
pp. 7875-7887 ◽  
Author(s):  
K. J. Lee ◽  
J. H. Woo ◽  
E. Kim ◽  
Y. Xiao ◽  
X. Su ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photophysical Properties ◽  
Electronic Energy ◽  
Perylene Diimide ◽  
Molecular Systems ◽  
Transfer Processes ◽  
Energy And Electron Transfer ◽  
Donor Acceptor ◽  
Electron Transfer Processes

The photophysical properties of novel donor–acceptor dyad and triad molecules show an intricate interplay between energy and electron transfer processes.

Arene-functionalized polyisocyanides: photophysics of well-defined homopolymers and block copolymers for efficient light harvesting

1995 ◽  
Vol 73 (11) ◽  
pp. 2101-2101 ◽  
Author(s):  
Bo Hong ◽  
Mary A. Fox
Keyword(s):  
Electron Transfer ◽  
Block Copolymers ◽  
Diblock Copolymer ◽  
Diblock Copolymers ◽  
Triblock Copolymers ◽  
Ion Pairs ◽  
Energy Migration ◽  
Excimer Emission ◽  
Transfer Energy ◽  
Exciplex Formation

Steady-state and time-resolved fluorescence spectroscopy of the homopolymers and di- and triblock copolymers of 2-naphthylethylisocyanide (7), 9-anthrylethylisocyanide (10), and 2-phenanthrylethylisocyanide (11) exhibit emission from the isolated chromophores, i.e., naphthyl, anthryl, or phenanthryl, upon excitation at 284 or 354 nm. The absence of excimer emission in the fluorescence spectra of all these homopolymers is indicative of a rigid polymeric backbone. Fluorescence quenching in diblock copolymers containing a dimethylaniline donor block and a naphthalene or anthracene acceptor block takes place through directional energy migration to the acceptor–quencher interface. The migrating excited state is then quenched at the interface either by photoinduced electron transfer in the anthracene–dimethylaniline diblock copolymer or by exciplex formation in the naphthalene–dimethylaniline diblock copolymer. Upon incorporation of an intervening block derived from pentamethylphenylethylisocyanide 8, exciplex formation is suppressed in the related triblock copolymer. Transient absorption spectra of this family of di- and triblock copolymers reveal the formation of radical ion pairs, with a lifetime of 1.1 μs in the anthracene–dimethylaniline diblock copolymer. Keywords: electron transfer, energy migration, excimer emission, polyisocyanides, block copolymers.

Photophysical properties of semiconducting-ferroelectric block copolymers for organic photovoltaics

2018 ◽  
Author(s):  
Mustapha Abdu-Aguye ◽  
Nutifafa Doumon ◽  
Ivan Terzic ◽  
Vincent Voet ◽  
Katya Loos ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Organic Photovoltaics ◽  
Photophysical Properties

Synthesis, photophysical properties, and computational studies of benzothiadiazole and/or phenothiazine based donor/acceptor π-conjugated copolymers

2021 ◽  
Vol 28 (7) ◽  
Author(s):  
Ashraf A. El-Shehawy ◽  
Morad M. El-Hendawy ◽  
Adel M. Attia ◽  
Abdul-Rahman I. A. Abdallah ◽  
Nabiha I. Abdo
Keyword(s):  
Photophysical Properties ◽  
Computational Studies ◽  
Donor Acceptor ◽  
Conjugated Copolymers

Photoelectrochemical properties of supramolecular composites of an anionic zinc chlorin and Li+@C60 on SnO2

2014 ◽  
Vol 18 (10n11) ◽  
pp. 982-990 ◽  
Author(s):  
Kei Ohkubo ◽  
Yuki Kawashima ◽  
Kentaro Mase ◽  
Hayato Sakai ◽  
Taku Hasobe ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Photovoltaic Cells ◽  
Lithium Ion ◽  
Transparent Electrode ◽  
Supramolecular Complex ◽  
Photoelectrochemical Properties ◽  
Triplet Excited State ◽  
Optically Transparent ◽  
Donor Acceptor

An electron donor–acceptor supramolecular complex was formed between an anionic zinc chlorin carboxylate ( ZnCh -) and lithium-ion-encapsulated [60]fullerene ( Li +@ C 60) by an electrostatic interaction in benzonitrile ( PhCN ). Photoinduced electron transfer in the supramolecular complex of ZnCh -/ Li +@ C 60 resulted in the formation of the charge-separated state via electron transfer from the triplet excited state of ZnCh - to Li +@ C 60. We report herein photovoltaic cells using ZnCh -/ Li +@ C 60 nanoclusters, which are assembled on the optically transparent electrode (OTE) of nanostructured SnO 2 (OTE/ SnO 2). The photoelectrochemical behavior of the nanostructured SnO 2 film of supramolecular nanoclusters of ZnCh - and Li +@ C 60 denoted as OTE/ SnO 2/( ZnCh -/ Li +@ C 60)n is significantly higher than the single component films of ZnCh - or Li +@ C 60 clusters, denoted as OTE/ SnO 2/( ZnCh -)n or OTE/ SnO 2/( Li +@ C 60)n.

Through-bond modulation of intramolecular electron transfer in rigidly linked donor-acceptor systems

1989 ◽  
Vol 164 (2-3) ◽  
pp. 120-125 ◽  
Author(s):  
James M. Lawson ◽  
Donald C. Craig ◽  
Michael N. Paddon-Row ◽  
Jan Kroon ◽  
Jan W. Verhoeven
Keyword(s):  
Electron Transfer ◽  
Intramolecular Electron Transfer ◽  
Donor Acceptor

Sequential Energy and Electron Transfer in Aggregates of Tetrakis[oligo(p-phenylene vinylene)] Porphyrins and C60in Water

2005 ◽  
Vol 127 (39) ◽  
pp. 13484-13485 ◽  
Author(s):  
Martin Wolffs ◽  
Freek J. M. Hoeben ◽  
Edwin H. A. Beckers ◽  
Albertus P. H. J. Schenning ◽  
E. W. Meijer
Keyword(s):  
Electron Transfer ◽  
Phenylene Vinylene ◽  
Energy And Electron Transfer
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