Optical properties of novel Er-containing co-polymers with emission at 1530nm

Pizzoferrato, R.; Ziller, T.; Paolesse, Roberto; Mandoj, Federica; Micozzi, A.; Ricci, Antonella; Sterzo, Claudio Lo

doi:10.1016/j.cplett.2006.05.071

Cited by 18 publications

(10 citation statements)

References 31 publications

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“…Erbium(III) porphyrin complexes were incorporated as erbium(III)(acetylacetonato-)diphenylporphyrin or erbium(III)(acetylacetonato)dimesitylporphyrin in the backbone of a conjugated poly(arylene ethynylene) copolymer. 913 The material could be processed by spin-coating and emits at 1550 nm. Because of the greatly increased electronic delocalization throughout the conjugated polymer backbone, the complexes could be excited with a wavelength as long as 750 nm.…”

Section: Complexes Covalently Bonded To the Polymer Matrixmentioning

confidence: 99%

Lanthanide-Based Luminescent Hybrid Materials

2009

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Koen Binnemans was born in Geel, Belgium, in 1970. He obtained his M. Sc. degree (1992) and Ph.D. degree (1996) in Chemistry at the Catholic University of Leuven, under the supervision of Prof. C. Go ¨rller-Walrand. In the period 1999-2005, he was a postdoctoral fellow of the Fund for Scientific Research Flanders (Belgium). He did postdoctoral work with Prof. Jacques Lucas (Rennes, France) and Prof. Duncan W. Bruce (Exeter, U.K.). In 2000, he received the first ERES Junior Award (ERES, European Rare-Earth and Actinide Society). From 2002 until 2005, he was (parttime) associate professor. Presently, he is professor of chemistry at the Catholic University of Leuven. His current research interests are metalcontaining liquid crystals (metallomesogens), lanthanide-mediated organic reactions, lanthanide spectroscopy, luminescent molecular materials, and ionic liquids.

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Section: Complexes Covalently Bonded To the Polymer Matrixmentioning

confidence: 99%

Lanthanide-Based Luminescent Hybrid Materials

2009

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“…[11] Moreover, this hypothesis is supported by the fact that PL spectra of PAEs in solid-state solution with inert polymers, [15] such as polystyrene and poly(methyl methacrylate), show a partial recovery of the characteristic emission bands of the liquid solution; as expected considering the supposed greater separation between PAE chains. Further investigations, however, are needed to clarify this important point.…”

Section: Full Papersmentioning

confidence: 80%

“…An additional advantage deriving from this approach is represented by the obtaining of a series of model compounds whose spectroscopic characterization and study of properties might be useful not only to characterize the corresponding polymeric materials (vide infra) but also to predict and rationalize their properties. [15] ð1Þ…”

Section: Preparation Of Model Compoundsmentioning

confidence: 99%

Use of the Pd-PromotedExtended One-Pot (EOP) Synthetic Protocol for the Modular Construction of Poly-(arylene ethynylene)co-Polymers [?Ar?C?C?Ar??C?C?]n, Opto- and Electro-Responsive Materials for Advanced Technology

Micozzi

Ottaviani

Giardina

et al. 2005

Advanced Synthesis & Catalysis

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Abstract:We report on the use of our novel multistep/ one-pot/Pd-promoted synthetic strategy, named extended one-pot (EOP), for the preparation of polymeric conjugated systems characterized by a backbone composed of regularly alternating alkyne and arylene moieties of type [ À C C À A À C C À B À ] n . The "A" unit (or module) is in charge of impressing mechanical strength, chemical stability and processability to the polymer, while different "B" units (or modules) have been selected to obtain polymers with different functional properties. With this "modular approach" concept, a series of co-poly(arylene ethyny-Ar' ¼ 1,10-phenanthroline, hydroquinone, pyridine, tetrafluorobenzene, dithiophene, benzene, and anthracene] potentially useful for the fabrication of sensory, electroactive and light-emitting materials, have been formed. Investigations of the photophysical properties of these materials, both in solution and in the solid state, have demonstrated a large degree of variation of properties depending on the nature of Ar' and the extension of the conjugation in the polymeric backbone. This EOP synthetic protocol, with its multiple and sequential one-pot Pd-catalyzed processes, is characterized by a very low catalyst charge loading, a consistent cut-down of reaction times, ease of operation and cost with respect to conventional procedures to obtain ethynylated polymers. Moreover, although it is based on the Pd-catalyzed coupling of organostannanes and aromatic halides (Stille reaction), the EOP synthetic route optimizes and reduces the use of tin, because during the multi-step one-pot process, tin intermediates are in situ formed by complete reconversion of tin by-products generated in the course of the transformation. In addition, after formation and isolation of polymeric materials, tin-containing products are recovered and reused to form new reagents for the delivery of the alkyne moiety into the polymer backbone.

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“…Biladiene is a linear tetrapyrrole with two additional methyl groups at the 1,19-positions, GeTPC (TPC = triphenylcorrolate) is the chlorogermanium complex of a triphenylcorrole and ZnTPPpol (TPP = 5,10,15,20-tetraphenylporphinate) is a polymer in which different ZnTPP units are linked by arylethynyl groups. [15][16][17] Figure 2c shows the measured spectra (F i (l)) of each of these substances for 50 polychromatic illuminations. The red line in the first panel of Figure 2c indicates F(l) = 1; hence, values larger than 1 correspond to predominant fluorescence, because that means that the detector receives more light than through the pure solvent used as reference.…”

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confidence: 99%

“…Two of these substances are common fluorescent dyes (fluorescein and rhodamine B) and the others are fluorescent indicators used in chemical sensing. Biladiene is a linear tetrapyrrole with two additional methyl groups at the 1,19‐positions, GeTPC (TPC=triphenylcorrolate) is the chlorogermanium complex of a triphenylcorrole and ZnTPPpol (TPP=5,10,15,20‐tetraphenylporphinate) is a polymer in which different ZnTPP units are linked by arylethynyl groups 15–17…”

mentioning

confidence: 99%

Polychromatic Fingerprinting of Excitation Emission Matrices

Gatto

Malik

Natale

et al. 2008

Chemistry A European J

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Chemical fingerprinting: The polychromatic fingerprinting of the excitation emission matrix (EEM) of diverse fluorescent substances by using common computer screens as light sources is reported. The modelling of the polychromatically excited spectra (see graphic) establishes the link with the sampling of the EEM of the tested substances and sets the theoretical frame for the interpretation of sensing techniques based on this principle.

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Optical properties of novel Er-containing co-polymers with emission at 1530nm

Cited by 18 publications

References 31 publications

Lanthanide-Based Luminescent Hybrid Materials

Lanthanide-Based Luminescent Hybrid Materials

Use of the Pd-PromotedExtended One-Pot (EOP) Synthetic Protocol for the Modular Construction of Poly-(arylene ethynylene)co-Polymers [?Ar?C?C?Ar??C?C?]n, Opto- and Electro-Responsive Materials for Advanced Technology

Polychromatic Fingerprinting of Excitation Emission Matrices

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