Electroluminescence in Ruthenium(II) Dendrimers

Barron, Jason A.; Bernhard, Stefan; Houston, Paul L.; Abruña, Héctor D.; Ruglovsky, Jennifer L.; Malliaras, George G.

doi:10.1021/jp027139b

Cited by 60 publications

(40 citation statements)

References 48 publications

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“…Currently, novel polymeric materials based on iridium(III) complexes are under investigation because of their potential applications in organic light-emitting devices, [19][20][21][22] as well as in biochemical and biomedical areas. [13][14][15] These polymeric iridium(III)-containing materials offer many remarkable advantages, such as high quantum yields and short phosphorescence lifetimes, as well as the ability of color-tuning because of metal-toligand based radiation.…”

Section: Resultsmentioning

confidence: 99%

“…[13][14][15] These polymeric iridium(III)-containing materials offer many remarkable advantages, such as high quantum yields and short phosphorescence lifetimes, as well as the ability of color-tuning because of metal-toligand based radiation. [19,20,22] The straightforward synthesis of complex 5 is depicted in Scheme 1. In this procedure a commercially available monomethyl ether of poly(ethylene glycol) (M n ¼ 2 800 g Á mol À1 , M w ¼ 2 940 g Á mol À1 , PDI ¼ 1.05 according to MALDI-TOF MS) was activated with N,N 0 -carbonyldiimidazole (CDI).…”

Section: Resultsmentioning

confidence: 99%

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A Novel Light‐Emitting Mixed‐Ligand Iridium(III) Complex with a Terpyridine‐Poly(ethylene glycol) Macroligand

Holder

Marin

Meier

et al. 2004

Macromol. Rapid Commun.

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Summary: A monoterpyridine‐poly(ethylene glycol) (mono‐tpy‐PEG) and a novel monoterpyridine‐PEG‐functionalized iridium(III) complex were successfully synthesized and fully characterized by means of NMR, IR, and UV‐vis spectroscopy, as well as gel permeation chromatography and matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry. The functionalized monoterpyridine iridium(III) complex was synthesized by a bridge‐splitting reaction of a dimeric iridium(III) precursor complex using a chelating terpyridine ligand with a poly(ethylene glycol) tail. With this approach, a new class of light‐emitting polymeric materials revealing interesting optical properties was made avaialable.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

A Novel Light‐Emitting Mixed‐Ligand Iridium(III) Complex with a Terpyridine‐Poly(ethylene glycol) Macroligand

Holder

Marin

Meier

et al. 2004

Macromol. Rapid Commun.

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“…[3] These types of functional polymers have found potential applications as precursors for magnetoceramics [4] or electroluminescent materials. [5] Our group has been continuously exploring the use of metal-containing polymers for a variety of opto-electronic devices. The metal complexes incorporated into polymers could play the roles of photosensitizers, charge transport species, and emission sensitizers.…”

Section: Introductionmentioning

confidence: 99%

Self‐Assembled Monolayer Formed by a Rhenium Complex Containing Hyperbranched Polymer

Tse

Cheng

Chan

et al. 2004

Macromol. Rapid Commun.

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Summary: The synthesis of a hyperbranched polymer containing a rhenium bipyridine complex is reported. The polymer was synthesized from a monomer that contains two chlorotricarbonyl rhenium(I) bipyridine moieties and a stilbazole ligand, and the polymer was formed by the coordination reaction in one single step. Gel permeation chromatography results showed that the resulting polymer had a strong interaction with the column packing material, which was reduced when the eluent was added with an electrolyte. Both atomic force microscopy and laser light scattering showed that the size of the polymer molecules was in the range between 25–30 nm. A monolayer of polymer molecules could form on a pretreated substrate by the self‐assembly process, which can serve as the building block for multilayer ultrathin film devices.The metal‐containing hyperbranched polymer synthesized here.magnified imageThe metal‐containing hyperbranched polymer synthesized here.

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“…The experimental results indicated that, in the case of a phenylene-vinylene encapsulated triphenylamine core [89], there is a drastic reduction in mobility from 5.1 × 10 -6 to 5.5 × 10 -9 cm 2 /Vs after changing the generation number from 0 to 3 [89]. The PAMAM decorated [Ru(bpy) 3 ] + 2 dendrimers exhibited similar trend of mobility reductions with increasing generation number [90]. In contrast, iridium core dendrimers with carbazole in each layer [91] exhibited twofold increase in the mobility from (3-6) × 10 -5 cm 2 /Vs for generation 1 to (7.3-12) × 10 -5 cm 2 /Vs for generation 3.…”

Section: Organic Molecules For Device Applicationsmentioning

confidence: 85%

Organic semiconductors for device applications: current trends and future prospects

Ahmad

2014

Journal of Polymer Engineering

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Abstract:With the rich experience of developing silicon devices over a period of the last six decades, it is easy to assess the suitability of a new material for device applications by examining charge carrier injection, transport, and extraction across a practically realizable architecture; surface passivation; and packaging and reliability issues besides the feasibility of preparing mechanically robust wafer/substrate of single-crystal or polycrystalline/ amorphous thin films. For material preparation, parameters such as purification of constituent materials, crystal growth, and thin-film deposition with minimum defects/ disorders are equally important. Further, it is relevant to know whether conventional semiconductor processes, already known, would be useable directly or would require completely new technologies. Having found a likely candidate after such a screening, it would be necessary to identify a specific area of application against an existing list of materials available with special reference to cost reduction considerations in large-scale production. Various families of organic semiconductors are reviewed here, especially with the objective of using them in niche areas of large-area electronic displays, flexible organic electronics, and organic photovoltaic solar cells. While doing so, it appears feasible to improve mobility and stability by adjusting π-conjugation and modifying the energy bandgap. Higher conductivity nanocomposites, formed by blending with chemically conjugated C-allotropes and metal nanoparticles, open exciting methods of designing flexible contact/interconnects for organic and flexible electronics as can be seen from the discussion included here.

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Electroluminescence in Ruthenium(II) Dendrimers

Cited by 60 publications

References 48 publications

A Novel Light‐Emitting Mixed‐Ligand Iridium(III) Complex with a Terpyridine‐Poly(ethylene glycol) Macroligand

A Novel Light‐Emitting Mixed‐Ligand Iridium(III) Complex with a Terpyridine‐Poly(ethylene glycol) Macroligand

Self‐Assembled Monolayer Formed by a Rhenium Complex Containing Hyperbranched Polymer

Organic semiconductors for device applications: current trends and future prospects

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