Synthesis and Properties of Novel Well-Defined Alternating PPE/PPV Copolymers

Egbe, Daniel Ayuk Mbi; Tillmann, H.; Birckner, Eckhard; Klemm, Elisabeth

doi:10.1002/1521-3935(20010901)202:13<2712::aid-macp2712>3.0.co;2-g

Cited by 78 publications

(116 citation statements)

References 14 publications

(20 reference statements)

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“…The emission maximum of the copolymer is at 563 nm in CHCl 3 solution (excited at 418 nm) and 596 nm as a solid film (excited at 460 nm). The fluorescence quantum yield of C12-PPE-DCNTB was found to be 71%, which is basically equal to that of a similar alternating PPE/ PPV copolymer, [4] but much higher than that of CN-PPV (35-46%, Cambridge group [15] ), which is mostly attributed to the higher fluorescence quantum yields of triple bonds.…”

Section: Resultsmentioning

confidence: 98%

“…These drawbacks are related to the low oxidation potential of PPVs. [4] The EL emission efficiency is high for the balanced injection of the charges from the respective electrodes. Several groups [5][6][7] reported that cyano-substituted PPVs (CNPPVs) have good electron injection and transport abilities because of the excellent electron-transporting moiety introduced into the conjugated polymer.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, Electrochemical, and Optical Properties of a Novel PPV/PPE Block‐Copolymer

Yang

Bai

2004

Macromol. Rapid Commun.

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Summary: A novel poly(p‐phenylene vinylene) (PPV)/poly(p‐phenylene ethynylene) (PPE) block‐copolymer was synthesized by a cross‐coupling polycondensation with Pd(PPh3)2Cl2 and a phase‐transfer catalyst, and was confirmed by 1H NMR and IR spectroscopy and elemental analysis. The thermal, electrochemical, and photoluminescent properties of the new copolymer have been investigated. The incorporation of triple bonds into the cyano‐substituted PPV (CN‐PPV) backbone leads to higher oxidation and reduction potentials than poly(2‐methoxy‐5‐(2‐ethylhexyloxy)‐p‐phenylene vinylene) (MEH‐PPV) and CN‐PPV, potentially making the copolymer a good electron‐transporting material for use in a light‐emitting‐diode device.

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Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Synthesis, Electrochemical, and Optical Properties of a Novel PPV/PPE Block‐Copolymer

Yang

Bai

2004

Macromol. Rapid Commun.

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“…[ 30 ] The quantum yield in the solid state was determined against a (poly{1,4-phenylene-[1-(4-trifl uoromethylphenyl)ethenylene]-2,5-dimethoxy-1,4-phenylene-[2-(4-trifl uoromethylphenyl) ethenylene]}) (CF3P-PPV) as reference that has been measured with an integrating sphere ( Φ f = 43%). [ 31 ] Cyclic voltammetric (CV) measurements were conducted using a solution of 0.1 M tetrabutyl ammonium hexafl uorophosphate (Bu 4 NPF 6 ) in acetonitrile as electrolyte. A setup consisting of a platinum (Pt) sheet working electrode, a Pt sheet counter and a quasi-silver/silver chloride (Ag/AgCl) reference electrode kept in nitrogen atmosphere was used in the experiment.…”

Section: Methodsmentioning

confidence: 99%

Effect of Varying Thiophene Units on Charge‐Transport and Photovoltaic Properties of Poly(phenylene ethynylene)‐alt‐poly(phenylene vinylene) Polymers

Adam

Yohannes

White

et al. 2014

Macro Chemistry & Physics

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Poly(phenylene ethynylene)-alt -poly(phenylene vinylene)s (PPE-PPVs) with various thiophene units (thiophene, bithiophene, and 3,4-ethylenedioxythiophene) at the X position, with the general backbone design (Ph C C X C C Ph CH CH Ph CH CH ), bearing identical solubilizing side chains at the phenylene rings of the polymers, are synthesized to study the effect of this structural alteration on the properties such as the photophysics, the electrochemical properties, the charge-carrier mobility, and the morphology of the materials and its impact on their photovoltaic performance. The polymers are obtained in good yields with reasonable molecular weights and show solubility in ordinary organic solvents required for solution-processing applications. The polymer with a basic thiophene ring at the X positions shows the highest open-circuit voltage ( V OC of 930 mV) and the polymer with a bithiophene unit at the X position shows the highest short-circuit current density and charge-carrier mobility, whereas the polymer with 3,4-ethylenedioxythiophene shows the lowest photovoltaic performance.

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“…35,38,40,41 The subsequent Sonogashira cross-coupling reaction of 13 or 19 with either dihalogeno (Br or I) or monohalogeno arenes has led to different types of dialdehydes as illustrated in Schemes 3 and 4. 38,[40][41][42][43][44][45] In all cases 1 to 5% of 1,4-bis (4-formyl-2,5-dialkoxyphenyl)-butadiynes (24) were chromatographically isolated as side products.…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

Alkoxy-substituted poly(arylene-ethynylene)-alt-poly(arylene-vinylene)s: synthesis, electroluminescence and photovoltaic applications

2011

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Poly(arylene-ethynylene)-alt-poly(arylene-vinylene)s (PAE-PAVs) combine the intrinsic features of both poly(arylene-ethynylene) (PAE) and poly(arylene-vinylene) (PAV) in a single polymeric backbone. They exhibit enhanced electron affinity, as compared to parent poly(p-phenylene-vinylene) (PPV), making electron injection easier, placing them as potential candidates for low turn-on voltage organic light emitting diodes (OLEDs). Depending on the chemical structures, PAE-PAVs have been efficiently used either as donor materials in polymer-PCBM (phenyl-C 61 -butyric acid methylester) or polymer-Vinazene (2-vinyl-4,5-dicyanoimidazole) bulk heterojunction solar cells or as acceptor materials in polymer-polymer bilayer and blend solar cells. This article reviews the synthesis and properties (electroluminescence and photovoltaic) of p-conjugated alkoxy-substituted PAE-PAVs, designed by us, and which were obtained either by Horner-Wadsworth-Emmons olefination reaction of luminophoric dialdehydes with bisphosphonate esters, or Knoevenagel reaction of the same dialdehydes with dinitriles.

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Synthesis and Properties of Novel Well-Defined Alternating PPE/PPV Copolymers

Cited by 78 publications

References 14 publications

Synthesis, Electrochemical, and Optical Properties of a Novel PPV/PPE Block‐Copolymer

Synthesis, Electrochemical, and Optical Properties of a Novel PPV/PPE Block‐Copolymer

Effect of Varying Thiophene Units on Charge‐Transport and Photovoltaic Properties of Poly(phenylene ethynylene)‐alt‐poly(phenylene vinylene) Polymers

Alkoxy-substituted poly(arylene-ethynylene)-alt-poly(arylene-vinylene)s: synthesis, electroluminescence and photovoltaic applications

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