Bright red luminescence and triboluminescence from PMMA-doped polymer film materials supported by Eu 3+ -triphenylphosphine based β-diketonate and 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene oxide

George, Tesmol G.; Sajan, M.J.; Gopakumar, N.; Reddy, M. L. P.

doi:10.1016/j.jphotochem.2015.11.016

Cited by 37 publications

(8 citation statements)

References 71 publications

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“…Some triboluminescence phenomena of lanthanide (III) complexes in crystals and polymer matrices have also been reported (Fig. 12b, c) [155][156][157][158][159][160][161][162][163][164][165][166] . Chen et al 167 suggested that strongly luminescent lanthanide coordination polymer crystals with non-centrosymmetric structures are expected to show efficient triboluminescence because of the generation of opposite electric charges on opposing faces of cracks perpendicular to their polar axes.…”

Section: Mechanosensitized Luminescencementioning

confidence: 92%

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: Mechanosensitized Luminescencementioning

confidence: 92%

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

2018

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“…The doping method, (iii), allows one to obtain film materials, but doping of polymer matrices is however only possible with small amounts of lanthanide complexes, due to aggregation of the latter, leading to concentration quenching and consequently to the inevitable decrease of the luminescence intensity. Usually, the maximum concentration of the complex in polymer mixtures does not exceed 20 wt % [31][32][33][34][35]. It is known from the literature that liquid crystalline LC materials can be used as an alternative to polymers, however, the concentration of the phosphor is also limited by its crystallization in the matrix and does not exceed 10 mol.…”

Section: Introductionmentioning

confidence: 99%

A facile approach for the creation of heteroionic lanthanidomesogens-containing uniform films with enhanced luminescence efficiency

et al. 2021

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“…One advantages of this procedure is producing corrosion-resistant conductive materials [11]. George et al made a record of a change in a polymer's main chain, such as single and double bonds variations [12], which permits the electrons delocalization in the polymer matrix [13]. The effect of adding nano ZnO particles within the main chain of PMMA was investigated by Soumya et al [11].…”

Section: Introductionmentioning

confidence: 99%

Structural, Thermal, Optical Characterizations of PANI/PMMA Composite Doped by TiO2 as an Application in Optoelectronic Devices

Alsulami¹,

Rajeh²

2021

Preprint

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The casting method was employed for the preparation of polymer blend films doped with TiO2 (0.5, 1, 1.5, and 2.3 wt.%). The XRD outcomes show that TiO2 phase formation is anatase, with an average crystal size of 20.25 nm. PANI/PMMA-TiO2 nanocomposites samples have an amorphous nature. In addition, the degree of amorphousity is increased with the increase of the content of the TiO2 NPs. The FTIR method was employed for presenting the vibrational bands of the nanocomposites and the intermolecular bonding of the blend with the TiO2 NPs. The applied investigation involved the optical constant like absorption as well as t90-etransmission spectra, refractive index, reflectance, coefficient extinction, dielectric constant’ imaginary and real parts, the susceptibility (χ3) of third order and the optical band gaps. The optical band gap (Eg) values of the films of fabricated nanocomposites was lower upon doping (≤ 1.5 wt.%). The reduction of the value happened due to the introduction of the preselected TiO2 NPs into thin films. Such values significantly match the values which were revealed by the Tauc technique. It was proved through DSC and TGA techniques that TiO2 NPs can lead to the enhancement of the polymer blend in terms of thermal stability. As displayed by the DSC analysis, there is a single Tg of the polymer blend (PANI/PMMA), which prove their miscibility. The optical constants displayed by the experimental results show noticeable changes upon raising the doping concentrations. The resultant doped thin films indicate that the fabricating high-efficient optoelectronic machines are greatly promising.

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Bright red luminescence and triboluminescence from PMMA-doped polymer film materials supported by Eu 3+ -triphenylphosphine based β-diketonate and 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene oxide

Cited by 37 publications

References 71 publications

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

A facile approach for the creation of heteroionic lanthanidomesogens-containing uniform films with enhanced luminescence efficiency

Structural, Thermal, Optical Characterizations of PANI/PMMA Composite Doped by TiO2 as an Application in Optoelectronic Devices

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