New Synthesis of 3‐(2‐Furyl)biphenyls.

Сагитуллина, Г. П.; Glyzdinskaya, Larisa V.; Sagitullin, R. S.

doi:10.1002/chin.200627111

Cited by 2 publications

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“…The signal at ca. 57 ppm disappears from the spectrum of Dpdp-ePMO after treatment with NaNO 2 , 54 giving further evidences of the successful modification through the Diels-Alder reaction (Fig. S1, ESI †).…”

Section: Dipyridyl-dihydropyridazine Functionalized Parent Materials ...mentioning

confidence: 76%

Eu³⁺@PMO: synthesis, characterization and luminescence properties

et al. 2015

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A periodic mesoporous organosilica (PMO) functionalized with dipyridyl-dihydropyridazine units has been successfully prepared by a hetero Diels–Alder reaction between the double bonds of an ethenylene-bridged PMO material and a substituted tetrazine. The ordering and mesoporosity of the parent material is maintained after the post-modification process, and the surface Diels–Alder adducts are clearly observable in the pores. These dipyridyl-dihydropyridazine moieties can form interesting chelates with lanthanide ions. Thus, two novel organic–inorganic luminescent hybrid materials have been obtained by linking of Eu3+ compounds to an ethene-PMO functionalized with dipyridyldihydropyridazine. Both materials have been studied in depth by photoluminescence spectroscopy and luminescence decay time measurements. Our results reveal the key role of surface Diels–Alder adducts as suitable sensitizing ligands for europium ions

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Section: Dipyridyl-dihydropyridazine Functionalized Parent Materials ...mentioning

confidence: 76%

Eu³⁺@PMO: synthesis, characterization and luminescence properties

et al. 2015

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“…Last, the product was aromatized using NaNO 2 following procedures previously reported. 33 The procedure was repeated two times, and the material was washed excessively and dried at 120°C under vacuum afterwards. The nitrogen content on dppz-ePMO material was 1.0% (based on CHN results).…”

Section: Synthesismentioning

confidence: 99%

Temperature dependent NIR emitting lanthanide-PMO/silica hybrid materials

et al. 2017

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Two materials -a mesoporous silica (MS) and a periodic mesoporous organosilica (PMO) functionalized with dipyridyl-pyridazine (dppz) units were grafted with near-infrared (NIR) emitting lanthanide (Nd ) complexes in an attempt to obtain hybrid NIR emitting materials. The parent materials: dppzvSilica and dppz-ePMO were prepared by a hetero Diels-Alder reaction between 3,6-di(2-pyridyl)-1,2,4,5-tetrazine (dptz) and the double bonds of either ethenylene-bridged PMO (ePMO) or vinyl-silica (vSilica) and subsequent oxidation. The dppz-vSilica is reported here for the first time. The prepared lanthanide-PMO/silica hybrid materials were studied in depth for their luminescence properties at room temperature and chosen Nd 3+ and Yb 3+ samples also at low temperature (as low as 10 K). We show that both the dppz-vSilica and dppz-ePMO materials can be used as "platforms" for obtaining porous materials showing NIR luminescence. To obtain NIR emission these materials can be excited either in the UV or Vis region (into the π → π* transitions of the ligands or directly into the f-f transitions of the Ln 3+ ions). More interestingly, when functionalized with Nd 3+ or Yb 3+ β-diketonate complexes these materials showed interesting luminescence properties over a wide temperature range (10-360 K). The Yb 3+ materials were investigated for their potential use as ratiometric temperature sensors.

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New Synthesis of 3‐(2‐Furyl)biphenyls.

Abstract: New Synthesis of 3-(2-Furyl)biphenyls. -The title compounds (II) are obtained by the rearrangement of the pyridinium salts (I) under alkaline conditions. -(SAGITULLINA*, G. P.; GLYZDINSKAYA, L. V.; SAGITULLIN, R. S.; Mendeleev

Cited by 2 publications

References 1 publication

Eu³⁺@PMO: synthesis, characterization and luminescence properties

Eu³⁺@PMO: synthesis, characterization and luminescence properties

Temperature dependent NIR emitting lanthanide-PMO/silica hybrid materials

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New Synthesis of 3‐(2‐Furyl)biphenyls.

Abstract: New Synthesis of 3-(2-Furyl)biphenyls. -The title compounds (II) are obtained by the rearrangement of the pyridinium salts (I) under alkaline conditions. -(SAGITULLINA*, G. P.; GLYZDINSKAYA, L. V.; SAGITULLIN, R. S.; Mendeleev

Cited by 2 publications

References 1 publication

Eu3+@PMO: synthesis, characterization and luminescence properties

Eu3+@PMO: synthesis, characterization and luminescence properties

Temperature dependent NIR emitting lanthanide-PMO/silica hybrid materials

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Product

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Eu³⁺@PMO: synthesis, characterization and luminescence properties

Eu³⁺@PMO: synthesis, characterization and luminescence properties