Visible-light excited red emitting luminescent nanocomposites derived from Eu<sup>3+</sup>-phenathrene-based fluorinated β-diketonate complexes and multi-walled carbon nanotubes

Divya, V.; Reddy, M. L. P.

doi:10.1039/c2tc00186a

Cited by 72 publications

(32 citation statements)

References 80 publications

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“…He also showed highly efficient photosensitized energy transfer of Eu(III) complexes with phenanthrene-attached diketonate ( Fig. 5c) 30 . In another case, the photosensitized luminescence of Eu(III) and Tb (III) ions with triphenylene in calix [4] arene systems has been reported ( Fig.…”

Section: Control Of the T 1 Statementioning

confidence: 89%

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

2018

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The 4f-4f emission of Tb(III), Eu(III), and Sm(III) complexes plays an important role in the design of monochromatic green, red, and deep-red luminescent materials for displays, lighting, and sensing devices. The 4f-4f emission of Yb(III), Nd(III), and Er(III) complexes is observed in the near-infrared (IR) region for bioimaging and security applications. However, their absorption coefficients are extremely small (ε < 10 L mol −1 cm −1 ). In this review, photosensitized luminescent lanthanide(III) complexes containing organic chromophores (ligands) with large absorption coefficients (ε > 10,000 L mol −1 cm −1 ) are introduced. Organic molecular design elements, including (1) the control of the excited triplet (T 1 ) state, (2) the effects on the charge-transfer (CT) band, and (3) the energy transfer from metal ions for effective photosensitized luminescence, are explained. The characteristic electrosensitized luminescence (electroluminescence) and mechanoluminescence (triboluminescence) of lanthanide(III) complexes are also explained. Lanthanide(III) complexes with well-designed organic molecules are expected to open avenues of research among the fields of chemistry, physics, electronics, and material science.

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Section: Control Of the T 1 Statementioning

confidence: 89%

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

2018

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“…It is well known that rare earth complexes have advantages of narrow band emission, good monochromatic character, strong UV absorption ability and long fluorescence life [5][6][7][8][9][10] and diketone is one kind of organic ligands that has been used in many complexes [11,12]. Diketonate as ligands can sensitize Eu 3+ to emit fluorescence and the sensitization process is that the diketonate ligand absorbs energy, undergoes intersystem crossing into a triplet state, and transfers its energy to the Eu 3+ ion subsequently [13,14].…”

Section: Introductionmentioning

confidence: 99%

Coordinate bond breaking induced by collapse of poly(N-isopropyl acrylamide) as ligands of a rare Earth complex

Song

Zhu

Liang

et al. 2018

Chinese Journal of Chemical Physics

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A novel water-soluble luminescent complex consisting of Eu(ally-dbm) 3-2Tppo and poly(Nisopropyl acrylamide) (PNIPAM) is synthesized through a series of chemical reactions. The structure of the complex is characterized by TGA, GPC, HNMR, and the thermal-responsive fluorescence of the complex in aqueous solution is investigated. It is found that PNIPAM collapse above the lower critical solution temperature causes the coordination bond breaking, leading to weakening of the fluorescence from Eu 3+ and enhancing of the fluorescence from the ligands. When temperature decreases, the fluorescence from Eu 3+ is found to boost up and the fluorescence from ligands weakens accordingly. It is deduced from this phenomenon that the ligands re-coordinate with europium ions again along with the temperature decreasing, which is further confirmed by IR measurements. This thermal-responsive fluorescence is of reversibility, which can be used as molecular probes for biological imaging and collapse studying of PNIPAM.

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“…In particular, η of doping 7% Eu-complex into PHB is 2.3 times that of Eu-complex precursor. The result indicated that Eu/PHB films will have with important applications in biomedical analysis and lighting devices [28].…”

Section: Photophysical Properties Of the Eu-complex Doped In Phb Matrmentioning

confidence: 99%

Poly-β-hydroxybutyrate sensitizing effect on the photophysical properties of environment friendly fluorescent films containing europium complex

Yang

Zeng

Zhou

et al. 2016

Journal of Luminescence

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Visible-light excited red emitting luminescent nanocomposites derived from Eu³⁺-phenathrene-based fluorinated β-diketonate complexes and multi-walled carbon nanotubes

Cited by 72 publications

References 80 publications

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

Coordinate bond breaking induced by collapse of poly(N-isopropyl acrylamide) as ligands of a rare Earth complex

Poly-β-hydroxybutyrate sensitizing effect on the photophysical properties of environment friendly fluorescent films containing europium complex

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Visible-light excited red emitting luminescent nanocomposites derived from Eu3+-phenathrene-based fluorinated β-diketonate complexes and multi-walled carbon nanotubes

Cited by 72 publications

References 80 publications

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

Coordinate bond breaking induced by collapse of poly(N-isopropyl acrylamide) as ligands of a rare Earth complex

Poly-β-hydroxybutyrate sensitizing effect on the photophysical properties of environment friendly fluorescent films containing europium complex

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Visible-light excited red emitting luminescent nanocomposites derived from Eu³⁺-phenathrene-based fluorinated β-diketonate complexes and multi-walled carbon nanotubes