Fluorescence emission from poly[2-(9-ethyl)carbazolyl-methylmethacrylate]

Ledwith, A.; Rowley, N.J.; Walker, S.

doi:10.1016/0032-3861(81)90156-7

Cited by 19 publications

(17 citation statements)

References 10 publications

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“…The optical properties of all these synthesized stereoregular polymers were deeply investigated. In particular, some articles report that polymers containing carbazole pendants do not exhibit excimer emission, at least in diluted solutions, except when the carbazole chromophores are directly bound to the polymer backbone . Consistently with these observations, the fluorescence spectra of diluted solutions of our synthesized stereoregular polymers collected at room temperature do not exhibit excimer emission, but only the monomer fluorescence is observed.…”

Section: Introductionsupporting

confidence: 84%

Optoeletronic properties of poly(N‐alkenyl‐carbazole)s driven by polymer stereoregularity

Botta

Costabile

Venditto

et al. 2017

J. Polym. Sci. Part A: Polym. Chem.

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Stereoregular polymers like isotactic poly(N‐butenyl‐carbazole) (i‐PBK), isotactic and syndiotactic poly(N‐pentenyl‐carbazole) (i‐PPK and s‐PPK), and poly(N‐hexenyl‐carbazole) (i‐PHK and s‐PHK) are synthesized using the stereospecific homogeneous “single site” Ziegler‐Natta (Z‐N) catalysts: rac‐dimethylsilylbis(1‐indenyl)zirconium dichloride (1)/methylaluminoxane (MAO) and diphenylmethylidene(cyclopentadienyl)‐(9‐fluorenyl)zirconium dichloride (2)/MAO. Catalytic activity is rationalized by density functional theory (DFT) calculations. All synthesized polymers are fully characterized by NMR, thermal, wide‐angle X‐ray diffraction, and fourier transform infrared spectroscopy analysis. Fluorescence measurements on isotactic and syndiotactic polymer films indicate that all polymers give rise to excimers, both “sandwich‐like” and “partially overlapping.” Excimer formation is essentially driven by the polymer tacticity. Isotactic polymers generate both sandwich‐like and partially overlapping excimers, while syndiotactic polymers give rise especially to partially overlapping ones. A theoretical combined molecular dynamics–time dependent DFT approach is also used to support the experimental results. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 242–251

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Section: Introductionsupporting

confidence: 84%

Optoeletronic properties of poly(N‐alkenyl‐carbazole)s driven by polymer stereoregularity

Botta

Costabile

Venditto

et al. 2017

J. Polym. Sci. Part A: Polym. Chem.

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“…Recently, Ulbricht et al described the copolymerization of a bis-cyclometallated Ir III complex coordinating a methacrylate-equipped acetoacetate ligand with methyl methacrylate by free radical polymerization (using AIBN as initiator) and with a methacrylate-carbazole derivative applying atom transfer radical polymerization (ATRP) conditions (Scheme 4), respectively. [146] Unlike in PVK the carbazole-moieties of the ATRP-copolymer were introduced with a spacer to the polymeric backbone, which should even more suppress the formation of excimers [170] as in the case of 3-vinylcarbazole based polymers. [141] An almost exclusive emission from the complex in highly diluted solutions indicated an efficient intramolecular energy transfer from the carbazole units to the triplet emitter.…”

Section: Complex-containing Polymers: Synthesis and Propertiesmentioning

confidence: 99%

Recent Developments in the Application of Phosphorescent Iridium(III) Complex Systems

et al. 2009

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The recent developments in using iridium(III) complexes as phosphorescent emitters in electroluminescent devices, such as (white) organic light‐emitting diodes and light‐emitting electrochemical cells, are discussed. Additionally, applications in the emerging fields of molecular sensors, biolabeling, and photocatalysis are briefly evaluated. The basic strategies towards charged and non‐charged iridium(III) complexes are summarized, and a wide range of assemblies is discussed. Small‐molecule‐ and polymer‐based materials are under intense investigation as emissive systems in electroluminescent devices, and special emphasis is placed on the latter with respect to synthesis, characterization, electro‐optical properties, processing technologies, and performance.

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“…Due to the same polymerizable unit (methacrylate) attached via a C6‐spacer, both monomers, complex 5 and carbazole II , are expected to possess similar reactivity. Moreover, the spacer between carbazole and the polymeric backbone prevents the formation of excimers upon photoexcitation,26 which occurs e.g., in case of polymerized vinylcarbazole 27, 28…”

Section: Resultsmentioning

confidence: 99%

Copolymers Containing Phosphorescent Iridium(III) Complexes Obtained by Free and Controlled Radical Polymerization Techniques

Ulbricht

Becer

Winter

et al. 2008

Macromol. Rapid Commun.

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A methacrylate‐functionalized phosphorescent Ir(III)‐complex has been synthesized, characterized, and applied as a monomer in radical copolymerizations. Together with methyl methacrylate, the complex has been copolymerized under free radical polymerization conditions. Aiming for host‐guest‐systems, applicable e.g. in organic light emitting devices (OLEDs), the complex was further copolymerized with a methacrylate‐functionalized carbazole derivative using the atom transfer radical polymerization technique. Applying gel permeation chromatography, in combination with a photodiode array detector, could clearly prove the formation of the copolymers. The optical properties of the photoactive monomers as well as the copolymers were investigated by absorption and emission spectroscopy (in solution). For the carbazole‐copolymer, the emission originates almost exclusively from the complex. This provides evidence of an efficient intrachain energy transfer, which makes the system an interesting candidate for potential OLED applications.magnified image

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Fluorescence emission from poly[2-(9-ethyl)carbazolyl-methylmethacrylate]

Cited by 19 publications

References 10 publications

Optoeletronic properties of poly(N‐alkenyl‐carbazole)s driven by polymer stereoregularity

Optoeletronic properties of poly(N‐alkenyl‐carbazole)s driven by polymer stereoregularity

Recent Developments in the Application of Phosphorescent Iridium(III) Complex Systems

Copolymers Containing Phosphorescent Iridium(III) Complexes Obtained by Free and Controlled Radical Polymerization Techniques

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