Control of band gaps of conjugated polymers by copolymerization

Cho, H.N.; Kim, D.Y.; Kim, J.K.; Kim, C.Y.

doi:10.1016/s0379-6779(98)80044-1

Cited by 90 publications

(15 citation statements)

References 19 publications

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“…The similarity in spectral shapes between the polymer solution and film indicates that there is no significant change in the electronic structure between the two states. The absorption and emission spectra of P(PV-FOMe) are similar to those of poly{ [9,9-di-n-hexylfluorene-2,7-diyl]-alt-co-[1,4-(2,5-di-n-hexyloxy)phenylenevinylene]} developed by Cho et al [22]. This indicates that the electronic structure of the polymer backbone was not influenced by changing the substituents at 9 position of the fluorene unit from dihexyl to hexyloxyphenyl and methoxy groups.…”

Section: Synthesis and Characterizationmentioning

confidence: 52%

Optical switching behavior of poly(9-alkoxyfluorene-phenylenevinylene) upon exposure to Lewis acid and base

Shim

Moon

Lee

2006

Reactive and Functional Polymers

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Section: Synthesis and Characterizationmentioning

confidence: 52%

Optical switching behavior of poly(9-alkoxyfluorene-phenylenevinylene) upon exposure to Lewis acid and base

Shim

Moon

Lee

2006

Reactive and Functional Polymers

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“…(2,5-Bis(3-(heptyloxy)propyl)-1,4-phenylene)dimethanol (10). 34 Lithium aluminum hydride (0.3772 g, 9.939 mmol) and dry diethyl ether (5 mL) were stirred in an oven-dried 50 mL round-bottomed flask (previously flushed with N 2 gas) at 0 °C. A solution of 9 (0.8957 g, 1.675 mmol) in dry diethyl ether (29 mL) was then added slowly.…”

Section: 5-bis(3-(heptyloxy)propyl)terephthalic Acid (8)mentioning

confidence: 99%

“…33 Furthermore, unlike the Heck coupling or acyclic diene metathesis (ADMET) polymerization, the Horner–Emmons condensation does not rely on expensive metal catalysts. 34,35…”

Section: Introductionmentioning

confidence: 99%

“…33 Furthermore, unlike the Heck coupling or acyclic diene metathesis (ADMET) polymerization, the Horner−Emmons condensation does not rely on expensive metal catalysts. 34,35 ■ EXPERIMENTAL SECTION Details on instrumentation and device fabrication can be found in the Supporting Information. Poly(2,5-didecyl-p-phenylene vinylene) (PDDPV).…”

Section: ■ Introductionmentioning

confidence: 99%

“…Irregularities introduced in the polymer reduce the conjugation length and diminish the device efficiency by acting as charge traps. , In addition, unlike the Wittig reaction, the Horner–Emmons condensation has been shown to produce no cis-defects, which can also reduce charge transfer by limiting conjugation . Furthermore, unlike the Heck coupling or acyclic diene metathesis (ADMET) polymerization, the Horner–Emmons condensation does not rely on expensive metal catalysts. , …”

Section: Introductionmentioning

confidence: 99%

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Poly(1,4-phenylene vinylene) Derivatives with Ether Substituents to Improve Polymer Solubility for Use in Organic Light-Emitting Diode Devices

et al. 2019

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New ether-substituted poly(1,4-phenylene vinylene) (PPV) derivatives were synthesized via Horner–Emmons coupling. The structures of the monomers and the resultant oligomers were confirmed by 1H and 13C NMR spectroscopies. The molecular weights of the oligomers were characterized by gel permeation chromatography, giving the number-average and weight-average molecular weights and the corresponding polydispersity indices. Measurements of UV–vis absorption and fluorescence were used to characterize the optical properties of the oligomers. Estimation of the highest occupied molecular orbital and lowest unoccupied molecular orbital energy levels and other electrochemical characteristics of the oligomers were investigated by cyclic voltammetry. Dialkyl and dialkoxy PPV oligomers were also prepared and characterized following the same instrumental methods used for the ether-substituted oligomers, providing a known reference system to judge the performance of the new conjugated oligomers. Devices were fabricated to analyze the electroluminescent characteristics of the oligomers in organic light-emitting diodes.

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Synthesis of Conjugated Copolymer Containing Spirobifluorene Skeleton by Acyclic Diene Metathesis Polymerization for Polymer Light‐Emitting Diode Applications

Park

Jeong

Kang

et al. 2021

Bulletin Korean Chem Soc

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Grubbs‐type, Hoveyda‐type, cyclic alkyl amino carbene (CAAC)‐based ruthenium olefin metathesis catalysts were used for the acyclic diene metathesis (ADMET) polymerization of 2,7‐divinyl‐9,9‐di‐n‐octylfluorene (DVF). Additionally, various ratios of DVF and 2,2′,7,7′‐tetravinyl‐9,9′‐spirobifluorene (TVSF) were subjected to ADMET polymerization to obtain polymers P1–P7. Polymers P1–P4 were analyzed with gel permeation chromatography, UV–vis spectroscopy, and photoluminescence spectroscopy. As the TVSF ratio increases, polymers exhibit lower solubility but a narrower band in the photoluminescence spectrum. Polymer light‐emitting diode (PLED) devices were fabricated with polymers P1, P2, and P3. The performances of the PLED devices indicated that polymers including more spirobifluorene blocks showed better turn‐on voltage, brightness, current efficiency, and power efficiency.

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Control of band gaps of conjugated polymers by copolymerization

Cited by 90 publications

References 19 publications

Optical switching behavior of poly(9-alkoxyfluorene-phenylenevinylene) upon exposure to Lewis acid and base

Optical switching behavior of poly(9-alkoxyfluorene-phenylenevinylene) upon exposure to Lewis acid and base

Poly(1,4-phenylene vinylene) Derivatives with Ether Substituents to Improve Polymer Solubility for Use in Organic Light-Emitting Diode Devices

Synthesis of Conjugated Copolymer Containing Spirobifluorene Skeleton by Acyclic Diene Metathesis Polymerization for Polymer Light‐Emitting Diode Applications

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