Polymer light emission: control of properties through chemical structure and morphology

Bradley, Donal D. C.; Grell, Martin; Grice, Alan W.; Tajbakhsh, A. R.; O’Brien, D.; Bleyer, A.

doi:10.1016/s0925-3467(97)00067-0

Cited by 55 publications

(24 citation statements)

References 53 publications

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“…This intense blue emission combined with a large PL quantum efficiency (>50%) [146] are the main reasons why PF homo-and copolymers are being studied extensively as functional materials for OLEDs. [147] Unfortunately, many PFs exhibit an instability of the emitted color. This instability which is referred to as ''green-shift'' is unacceptable in connection with commercial applications.…”

Section: General Remarksmentioning

confidence: 99%

Suzuki Polycondensation: Polyarylenes à la Carte

Sakamoto

Rehahn

Wegner

et al. 2009

Macromol. Rapid Commun.

303

241

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This review draws a rather comprehensive picture of how Suzuki polycondensation was discovered in 1989 and how it was subsequently developed into the most powerful polymerization method for polyarylenes during the last 20 years. It combines insights into synthetic issues with classes of polymers prepared and touches upon aspects of this method's technological importance. Because a significant part of the developmental work was carried out in industry, the present review makes reference to an unusually large number of patents.

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Section: General Remarksmentioning

confidence: 99%

Suzuki Polycondensation: Polyarylenes à la Carte

Sakamoto

Rehahn

Wegner

et al. 2009

Macromol. Rapid Commun.

303

241

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“…In this context it is interesting to note that it should be possible to achieve polarization selection in polymer-based lasers through alignment of the chains. [59] Lasers that do not contain a polarizing element [24,60] are not expected to exhibit just a single polarization. From an application point of view this may be a drawback of the structure, however, the lack of external polarizing element enabled polarization memory to be demonstrated in PPV.…”

Section: Optical Excitationmentioning

confidence: 99%

Lasers Based on Semiconducting Organic Materials

Tessler¹

1999

Adv. Mater.

406

261

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Light‐emitting organic materials continue to assume increasing significance in the field of semiconductor laser research, and the Figure depicts several structures that have been demonstrated using organic semiconductors. This review provides a description of the fundamental aspects of lasers and a historical overview of their development, followed by a discussion of the recent progress in optically pumped lasers, and their implications for laser technology.

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“…[1][2][3][4][5][6] Among the conjugated polymers considered for LED application, polyfluorenes (PFs) have been viewed as the most promising blue-light materials due to their extremely high solution and solid-state quantum efficiency, good charge transport, excellent chemical and thermal stabilities and tunability of physical parameters through chemical modification and copolymerization. However, a long-wave emission in the region of 490-550 nm, [7][8][9][10] i.e.…”

mentioning

confidence: 99%

Studies of Green Emission in Polyfluorenes Using a Model Polymer

et al. 2007

Polym J

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ABSTRACT:The green emission (g-band) in polyfluorene-based conjugated materials is studied by various spectroscopic methods on defined poly(9,9 0 -dioctylfluorene) with one foluorenone unit (P 20 ), which can be seen as a model compound for polyfluorene emitting g-band. The absorption and emission properties of P 20 in the film and solution (room temperature) reveal the optical properties of the green emission emerging in polyfluorene-type polymer. All the experimental evidence obtained demonstrates that g-band in polyfluorene is attributed to the mono-chain fluorenone; and the aggregation of the chains further suppresses the blue emission and enhances g-band.[doi:10.1295/polymj.PJ2007041] KEY WORDS Polyfluorene / Conjugated Polymer / Membrane / Green Emission / Conjugated polymers serving as emitters in lightemitting diodes (LEDs) are attractive to the display industry because of their potential ability for easy and cost-effective processing by solution casting, excellent mechanical properties and structure controllability to tune electro-and photophysical properties.

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Polymer light emission: control of properties through chemical structure and morphology

Cited by 55 publications

References 53 publications

Suzuki Polycondensation: Polyarylenes à la Carte

Suzuki Polycondensation: Polyarylenes à la Carte

Lasers Based on Semiconducting Organic Materials

Studies of Green Emission in Polyfluorenes Using a Model Polymer

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