Journal ArticleDOI
Comparative study of photoelectric properties of regiosymmetrical poly(3,4-dialkoxythiophene)s
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TLDR
In this article, a series of regiosymmetrical poly(3,4-dialkoxythiophene)s were synthesized by the FeCl3-oxidative approach, and they were evaluated with NMR, FT-IR, gel permeation chromatography (GPC), thermo-gravimetric analysis (TGA), UV-Vis spectroscopy, and photoluminescence (PL).Abstract:
A series of regiosymmetrical poly(3,4-dialkoxythiophene)s: poly(3,4-diamyloxythiophene), poly(3,4-dioctyloxythiophene), poly(3,4-di(2-ethyl-1-hexyloxy)thiophene), and poly(3,4-didodecyloxythiophene) were synthesized by the FeCl3-oxidative approach. All these polymers were evaluated with NMR, FT-IR, gel permeation chromatography (GPC), thermo-gravimetric analysis (TGA), UV–Vis spectroscopy, and photoluminescence (PL). The polymers have excellent solubility in common organic solvents, and TGA studies show that the polymers lost 5% of their weights on heating to 250 °C above. Investigations of the UV–Vis spectroscopy show that the absorption maxima of the polymer thin films are similar to those in solutions, and the optical band gaps of the polymer thin films are ranging from 2.27 to 2.69 eV. In PL spectra, maxima emission peaks of the polymer thin films lie at 527 to 589 nm, embodying colors from green to yellow, and the quantum yields of the polymers are in the range of 22–28%. All the data indicate that the polymers have good solubility, outstanding thermal stabilities, low band gaps, and high PL quantum yields, and they might be excellent polymeric materials for applications in organic light-emitting diodes (OLEDs), light-emitting electrochemical cells, polymer solar cells, and so on.read more
Citations
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Journal ArticleDOI
Chain-Growth Polymerization of 2-Chlorothiophenes Promoted by Lewis Acids
TL;DR: The proposed mechanism is a cationic chain-growth polymerization, as confirmed by end-capping reactions and a linear correlation of molecular weight with percent conversion, which was used to prepare new block copolymers.
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Synthesis and photovoltaic properties of conjugated copolymers bearing planar acenaphtho[1,2- b ]quinoxaline moiety with deep HOMO level
Yong Zou,Zhiqiang Guan,Zhanyuan Zhang,Yan Huang,Nana Wang,Zhiyun Lu,Qing Jiang,Junsheng Yu,Yu Liu,Xuemei Pu +9 more
TL;DR: A series of alternating copolymers bearing planar acenaphtho[1,2-b]quinoxaline (AQx) or 8,11-di(thiophen- 2-yl)acenaphthus- 1,2b]-dithiophene (DTAQx)-acceptor cores have been synthesized via Suzuki or Stille coupling reactions as discussed by the authors.
Journal ArticleDOI
Gamma irradiation studies of composite thin films of poly vinyl alcohol and coumarin
Feroz A. Mir,Adil Gani,K. Asokan +2 more
TL;DR: In this article, the optical band gap of composite films of imperatorin (a coumarin molecule) and poly vinyl alcohol (PVA) was determined by using Tauc's plots.
Journal ArticleDOI
Synthesis and characterization of n-type conjugated copolymers bearing perylene diimide moieties
TL;DR: In this article, three electron-deficient conjugated polymers based on perylene diimide (PDI) units were synthesized via Suzuki coupling reaction, and their chemical structures are confirmed by 1H NMR, 13C NMR and FT-IR.
Journal ArticleDOI
Structural, optical & diode studies of PVA-Coumarin composite
TL;DR: In this article, composite films of coumarin and poly Vinyl Alcohol (PVA) were developed by solution casting technique, which were characterized by Fourier Transform Infrared (FT-IR) and UV-vis spectroscopy.
References
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Recent Progress in Organic Electronics: Materials, Devices, and Processes
Tommie W. Kelley,Paul F. Baude,Chris Gerlach,David E. Ender,Dawn V. Muyres,Michael A. Haase,Dennis E. Vogel,Steven D. Theiss +7 more
TL;DR: Research in organic electronics has included advances in materials, devices, and processes as mentioned in this paper, which are enabling the incorporation of organic electronic components in products including OLED displays and flexible electronic paper.