Nanolayered Heterojunctions of Donor and Acceptor Conjugated Polymers of Interest in Light Emitting and Photovoltaic Devices:  Photoinduced Electron Transfer at Polythiophene/Polyquinoline Interfaces

2001 ◽  
Vol 105 (13) ◽  
pp. 2479-2482 ◽  
Author(s):  
Maksudul M. Alam ◽  
Samson A. Jenekhe
Keyword(s):  
Electron Transfer ◽  
Conjugated Polymers ◽  
Photoinduced Electron Transfer ◽  
Photovoltaic Devices ◽  
Light Emitting ◽  
Donor And Acceptor

Variable band gap conjugated polymers for optoelectronic and redox applications

2005 ◽  
Vol 20 (12) ◽  
pp. 3188-3198 ◽  
Author(s):  
Young-Gi Kim ◽  
Barry C. Thompson ◽  
Nisha Ananthakrishnan ◽  
G. Padmanaban ◽  
S. Ramakrishnan ◽  
...  
Keyword(s):  
Phase Separation ◽  
Conjugated Polymers ◽  
Band Gap ◽  
Conjugated Polymer ◽  
Narrow Band ◽  
Acid Methyl Ester ◽  
Light Emitting ◽  
Donor And Acceptor ◽  
Color Tunable ◽  
Variable Band Gap

We report here on the utilization of variable band gap conjugated polymers for optoelectronic redox applications comprising organic photovoltaics, color tunable light emitting diodes, and electrochromics. For the evaluation of morphology in photovoltaicdevices, atomic force microscopy, and optical microscopy provided direct visualization of the blend film structure. The evolution of the morphology in two and three component blends incorporating poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenlenevinylene] (MEH-PPV), poly(methylmethacrylate) (PMMA), and [6, 6]-phenyl C61-butyric acid methyl ester (PCBM) was investigated. It was found that while insulating PMMA can be used to modulate the phase separation in these blends, a bicontinuous network of donor and acceptor was required to achieve the best device results. Similarily, a MEH-PPVcopolymer with a decreased conjugation length has been used for investigating inter- and intramolecular photoinduced charge transfer in the presence of PMMA and PCBM.We fabricated MEH-PPV/PCBM solar cells that have power conversion efficiencies up to 1.5% with a range of 0.7–1.5%, dependent on the nature of the MEH-PPV used. This further indicates that in addition to blend morphology, polymer structure is critical for optimizing device performance. To this end, the concept of an ideal donor for photovoltaic devices based on poly[2,5-di(3,7-dialkoxy)-cyanoterephthalylidene] is described and two donor-acceptor polymers based on cyanovinylene (CNV) and dioxythiophene are discussed as representative examples of soluble narrow band gap polymers synthesized in our group. For light emitting applications, utilization of two blue emitting conjugated polymers poly (9,9-dioctylfluorene) (PFO) and poly[(9,9-dihexylfluorenyl-2,7-diyl)-co-(9,ethyl-3,6-carbazole)] (PFH-PEtCz)is presented for a color tunable polymer light emitting diode that emits orange, green, and blue light with a voltage range of 7–10 V as a function of the total conjugated polymer content in PMMA and is attributed to the phase separation between the conjugated polymers. Finally, the narrow band gap conjugated polymer, poly[bis(3,4-propylenedioxythiophene-dihexyl)]-cyanovinylene has been characterized for its electrochromic properties, illustrating the multifunctional nature of variable band gap conjugated polymers.

scholarly journals Photoinduced Electron Transfer and Photovoltaic Devices of a Conjugated Polymer with Pendant Fullerenes

2001 ◽  
Vol 123 (27) ◽  
pp. 6714-6715 ◽  
Author(s):  
Alicia Marcos Ramos ◽  
Minze T. Rispens ◽  
Jeroen K. J. van Duren ◽  
Jan C. Hummelen ◽  
René A. J. Janssen
Keyword(s):  
Electron Transfer ◽  
Conjugated Polymer ◽  
Photoinduced Electron Transfer ◽  
Photovoltaic Devices

White Polymer Light-Emitting Electrochemical Cells Fabricated Using Energy Donor and Acceptor Fluorescent π-Conjugated Polymers Based on Concepts of Band-Structure Engineering

2015 ◽  
Vol 119 (52) ◽  
pp. 28701-28710 ◽  
Author(s):  
Yoshinori Nishikitani ◽  
Daisuke Takizawa ◽  
Hiroyuki Nishide ◽  
Soichi Uchida ◽  
Suzushi Nishimura
Keyword(s):  
Band Structure ◽  
Conjugated Polymers ◽  
Electrochemical Cells ◽  
Light Emitting ◽  
Energy Donor ◽  
Donor And Acceptor ◽  
Structure Engineering

Photoinduced electron transfer from conjugated polymers to CdSe nanocrystals

1999 ◽  
Vol 59 (16) ◽  
pp. 10622-10629 ◽  
Author(s):  
D. S. Ginger ◽  
N. C. Greenham
Keyword(s):  
Electron Transfer ◽  
Conjugated Polymers ◽  
Photoinduced Electron Transfer ◽  
Cdse Nanocrystals

Application of thin films of conjugated polymers in electrochemical and conventional light-emitting devices and in related photovoltaic devices

1997 ◽  
Vol 85 (1-3) ◽  
pp. 1283-1284 ◽  
Author(s):  
F. Huang ◽  
H.L. Wang ◽  
M. Feldstein ◽  
A.G. MacDiarmid ◽  
B.R. Hsieh ◽  
...  
Keyword(s):  
Thin Films ◽  
Conjugated Polymers ◽  
Photovoltaic Devices ◽  
Light Emitting ◽  
Light Emitting Devices

scholarly journals Absence of photoinduced electron transfer from the excitonic electron-hole bound state in polydiacetylene conjugated polymers

1994 ◽  
Vol 50 (16) ◽  
pp. 12044-12051 ◽  
Author(s):  
N. S. Sariciftci ◽  
B. Kraabel ◽  
C. H. Lee ◽  
K. Pakbaz ◽  
A. J. Heeger ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Conjugated Polymers ◽  
Photoinduced Electron Transfer ◽  
Bound State ◽  
Electron Hole

scholarly journals Photoinduced electron transfer and unusual environmental effects in fullerene–Zn-porphyrin–BODIPY triads

2019 ◽  
Vol 21 (45) ◽  
pp. 25098-25107 ◽  
Author(s):  
A. J. Stasyuk ◽  
O. A. Stasyuk ◽  
M. Solà ◽  
A. A. Voityuk
Keyword(s):  
Electron Transfer ◽  
Environmental Effects ◽  
Photoinduced Electron Transfer ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Donor Acceptor

Molecular arrays containing donor–acceptor sites and antenna molecules are promising candidates for organic photovoltaic devices.

Conjugated Polymers Based on 4,10-Bis(thiophen-2-yl)anthanthrone: Synthesis, Characterization, and Fluoride-Promoted Photoinduced Electron Transfer

2015 ◽  
Vol 48 (22) ◽  
pp. 8376-8381 ◽  
Author(s):  
Antoine Lafleur-Lambert ◽  
Jean-Benoît Giguère ◽  
Jean-François Morin
Keyword(s):  
Electron Transfer ◽  
Conjugated Polymers ◽  
Photoinduced Electron Transfer

Photoinduced Electron Transfer Chemistry of 9-Methylanthracene. Substrate as Both Electron Donor and Acceptor in the Presence of the 1-Ethyl-3-methylimidazolium Ion

1996 ◽  
Vol 118 (21) ◽  
pp. 4919-4924 ◽  
Author(s):  
Carlos Lee ◽  
Timothy Winston ◽  
Additya Unni ◽  
Richard M. Pagni ◽  
Gleb Mamantov
Keyword(s):  
Electron Transfer ◽  
Electron Donor ◽  
Photoinduced Electron Transfer ◽  
Donor And Acceptor ◽  
Electron Donor And Acceptor

scholarly journals Photoinduced Electron Transfer-Promoted Reactions Using Exciplex-Type Organic Photoredox Catalyst Directly Linking Donor and Acceptor Arenes

Molecules ◽  
2019 ◽  
Vol 24 (24) ◽  
pp. 4453
Author(s):  
Mugen Yamawaki ◽  
Akiko Asano ◽  
Toshiki Furutani ◽  
Yuki Izumi ◽  
Yosuke Tanaka ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Polar Solvent ◽  
Catalyst Activity ◽  
Excited Complex ◽  
Redox Catalyst ◽  
Low Concentrations ◽  
Donor And Acceptor

Directly linked donor and acceptor arenes, such as phenanthrene/naphthalene/biphenyl and 1,3-dicyanobenzene were found to work as photoredox catalysts in the photoreactions of indene, 2,3-dimethyl-2-butene, and 4-methoxyphenylacetic acid. The new stable organic photocatalyst forms an intramolecular exciplex (excited complex) when irradiated in a polar solvent and shows redox catalyst activity, even at low concentrations. To the best of our knowledge, this is the first example of an intramolecular exciplex working as a redox catalyst.

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