Synthesis of a Novel D-A Type Photoelectrical Material: 5,5'-(9,9-Dioctyl-9H-Fluorene-2,7-Diyl)bis(Thiophene-2-Carbaldehyde)

2014 ◽  
Vol 556-562 ◽  
pp. 408-411
Author(s):  
Xiao Xia Sun ◽  
Ze Biao Tang ◽  
Yu Hu
Keyword(s):  
Organic Molecules ◽  
Field Effect Transistors ◽  
Aldehyde Group ◽  
Organic Light Emitting Diodes ◽  
Organic Field Effect Transistors ◽  
Light Emitting ◽  
Donor Acceptor ◽  
Efficient Route ◽  
Property Profile ◽  
High Yields

A donor-acceptor organic molecule based on fluorene unit as an electron donor and aldehyde group as an electron acceptor has been demonstrated in high yields over four steps. This approach offers a much milder and more efficient route to synthesize the target compound via the Vilsmeier-Haack reaction. Optical spectra show that the electron-accepting groups induce an intermolecular charge transfer, resulting in a shift of the absorbance maximum toward longer wavelength. Such D-A type intermediate compounds as organic molecules display a significantly improved property profile in photoelectrical materials for applications in organic light-emitting diodes (OLEDs), organic photovoltaics (OPVs), and organic field-effect transistors (OFETs).

scholarly journals Oligofuran–Benzothiadiazole Co-oligomers: Synthesis, Optoelectronic Properties and Reactivity

2021 ◽  
Vol 03 (02) ◽  
pp. 303-308
Author(s):  
Dror Ben Abba Amiel ◽  
Choongik Kim ◽  
Ori Gidron
Keyword(s):  
Organic Solar Cells ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Organic Light Emitting Diodes ◽  
Organic Field Effect Transistors ◽  
Active Materials ◽  
Light Emitting ◽  
Organic Light ◽  
Donor Acceptor ◽  
Optical Bandgaps

Donor–acceptor–donor (DAD) triad systems are commonly applied as active materials in ambipolar organic field-effect transistors, organic solar cells, and NIR-emitting organic light-emitting diodes. Often, these triads utilize oligothiophenes as donors, whereas their oxygen-containing analogs, oligofurans, are far less studied in this setup. Here we introduce a family of DAD triads in which the donors are oligofurans and the acceptor is benzothiadiazole. In a combined computational and experimental study, we show that these triads display optical bandgaps similar to those of their thiophene analogs, and that a bifuran donor is sufficient to produce emission in the NIR spectral region. The presence of a central acceptor unit increases the photostability of oligofuran-based DAD systems compared with parent oligofurans of the similar length.

Synthesis, characterization, and hole-transporting properties of benzotriazatruxene derivatives

2019 ◽  
Vol 7 (47) ◽  
pp. 15035-15041 ◽  
Author(s):  
Tianchai Chooppawa ◽  
Supawadee Namuangruk ◽  
Hiroshi M. Yamamoto ◽  
Vinich Promarak ◽  
Paitoon Rashatasakhon
Keyword(s):  
Field Effect ◽  
Light Emitting Diodes ◽  
Field Effect Transistors ◽  
Organic Light Emitting Diodes ◽  
Organic Field Effect Transistors ◽  
Light Emitting ◽  
Organic Light ◽  
Hole Transporting ◽  
Derivatives Of ◽  
Hole Transporting Materials

Four derivatives of benzotriazatruxene are synthesized and tested as hole-transporting materials in organic field-effect transistors and organic light-emitting diodes.

Synthesis and Optical Properties of Donor-Accepter Organic Conjugated Molecules Composed of Fluorene and Phenothiazine

2014 ◽  
Vol 1061-1062 ◽  
pp. 296-300
Author(s):  
Ze Biao Tang ◽  
Xiao Xia Sun ◽  
Pei Lin Zhang
Keyword(s):  
Optical Properties ◽  
Fluorescence Spectra ◽  
Organic Molecules ◽  
Green Light ◽  
Organic Light Emitting Diodes ◽  
Conjugated Molecules ◽  
Strong Emission ◽  
Light Emitting ◽  
Conjugated Organic Molecules ◽  
Donor Acceptor

Novel donor-acceptor conjugated organic molecules composed of central fluorene and phenothiazine units and aldehyde terminal groups have been designed and constructed via the Vilsmeier-Haack reaction. Optical properties of the resulting molecules were examined by UV-vis and fluorescence spectroscopies. The fluorescence spectra of the molecules in the solid state show strong emission peaks in the violet, blue, cyan and green light regions. Thus, the molecules are expected to be promising light-emitting materials for organic light-emitting diodes applications.

Recent Progress in the Synthesis and Applications of Azaacenes

2020 ◽  
Vol 24 (8) ◽  
pp. 885-899 ◽  
Author(s):  
Yuechao Wu ◽  
Yi Jin ◽  
Jianguo Xu ◽  
Yanwen Lv ◽  
Jiangang Yu
Keyword(s):  
Recent Progress ◽  
Field Effect Transistors ◽  
Organic Light Emitting Diodes ◽  
Partial Substitution ◽  
Organic N ◽  
Organic Field Effect Transistors ◽  
Organic Electronic Devices ◽  
Light Emitting ◽  
Phenyl Rings ◽  
Type Semiconductor

Partial substitution of CH groups in the skeletons of linearly fused phenyl rings provides an appreciable possibility to tailor their properties. Among them, azaacenes induced from a partial substitution of oligoacenes by nitrogen are one of the most promising derivatives with a view of their potential application in organic electronic devices as a novel organic n-type semiconductor. Hence this review focuses on recent progress in the synthesis of azaacenes and their applications beyond organic field-effect transistors (OFETs) such as organic light-emitting diodes (OLEDs), phototransistors, photoelectrical chemical cells, organic memory, solar cells, conductors and sensors.

scholarly journals Organophosphorus derivatives for electronic devices

2016 ◽  
Vol 4 (17) ◽  
pp. 3686-3698 ◽  
Author(s):  
D. Joly ◽  
P.-A. Bouit ◽  
M. Hissler
Keyword(s):  
Field Effect Transistors ◽  
Organophosphorus Compounds ◽  
Electronic Devices ◽  
Dye Sensitized Solar Cells ◽  
Organic Light Emitting Diodes ◽  
Organic Field Effect Transistors ◽  
Light Emitting ◽  
Dye Sensitized ◽  
Main Class ◽  
Sensitized Solar Cells

This review presents the main class of organophosphorus compounds (triaryl phosphines, phosphazenes, phospholes, phosphetes and diphosphacyclobutanes), which have been used in electronic devices (organic light-emitting diodes (OLEDs), organic photovoltaic cells (OPV cells), dye-sensitized solar cells (DSSCs), organic field-effect transistors (OFETs), and electrochromic cells).

Synthesis of a Novel Donor Unit for Organic Light-Emitting Materials: 10-octyl-3,7-Di(thiophen-2-yl)-10H-phenothiazine

2014 ◽  
Vol 941-944 ◽  
pp. 640-643
Author(s):  
Xiao Xia Sun ◽  
Ze Biao Tang ◽  
He Wei Yan ◽  
Le Ping Miao
Keyword(s):  
Fluorescence Spectra ◽  
Green Light ◽  
Coupling Reaction ◽  
Organic Light Emitting Diodes ◽  
Target Compound ◽  
Suzuki Coupling Reaction ◽  
Light Emitting ◽  
Organic Light ◽  
Efficient Route ◽  
High Yields

A novel electron donor unit based on phenothiazine has been designed and constructed. The target compound 10-octyl-3,7-di (thiophen-2-yl)-10H-phenothiazine was easily synthesized in high yields with a milder and efficient route via the Suzuki coupling reaction. Optical spectra show that, from the solution to the solid state, both the absorption and fluorescence spectra of the target compound are small blue-shifted. Moreover, the fluorescence spectra exhibit the emission maxima of the target compound ranging from 485 nm to 496 nm, which belongs to blue-green light range. As expected, the target compound should be a promising donor to construct D-A type materials for applications in organic light-emitting diodes (OLEDs).

scholarly journals Perylene monoimide and naphthalene-annulated [3,3,3]propellanes: synthesis and device applications

2020 ◽  
Vol 4 (12) ◽  
pp. 3539-3545 ◽  
Author(s):  
Lingling Lv ◽  
Wenda Sun ◽  
Zhenmei Jia ◽  
Guowei Zhang ◽  
Fuzhi Wang ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Organic Light Emitting Diodes ◽  
Organic Field Effect Transistors ◽  
Light Emitting ◽  
Organic Light ◽  
Polycyclic Aromatic ◽  
Device Applications

3D polycyclic aromatic hydrocarbons are synthesized, and their applications for organic field-effect transistors and organic light-emitting diodes are explored.

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