Emission properties of porphyrin compounds in new polymeric PS:CBP host

Jafari, Mohammad Reza; Bahrami, Bahram

doi:10.1007/s00339-015-9126-z

Cited by 12 publications

(7 citation statements)

References 22 publications

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“…Several studies use porphyrin as a dopant, in which they increased the number of layers, and the device performance depended on the effective overlap of energy transfer from the electron carrier (host) to the dopant (guest). Therefore, it is important to highlight that in this study, the porphyrins were not used as dopants, and that they showed an electroluminescence in the red and a threshold voltage, which is similar to that reported in other works involving porphyrins as an emitter layer [8,9,14,15,46,47].…”

Section: Resultssupporting

confidence: 81%

“…Several studies highlight the optimal efficiency of polymer devices [10], polycyclic aromatic [11], and carbazole derivatives [12,13] as blue-and-green emitters. For red-emitting materials, porphyrins derivatives have received considerable attention for their saturated red emission, strong absorption, high stability, good film-forming properties, and higher efficiency of energy transfer and electron transport [8,9,14,15].…”

Section: Introductionmentioning

confidence: 99%

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Light-Emitting Porphyrin Derivative Obtained from a Subproduct of the Cashew Nut Shell Liquid: A Promising Material for OLED Applications

et al. 2019

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In this work, the meso-tetra[4-(2-(3-n-pentadecylphenoxy)ethoxy]phenylporphyrin (H2P), obtained from the cashew nut shell liquid (CNSL), and its zinc (ZnP) and copper (CuP) metallic complexes, were applied as emitting layers in organic light emitting diodes (OLEDs). These compounds were characterized via optical and electrochemical analysis and the electroluminescent properties of the device have been studied. We performed a cyclic voltammetry analysis to determine the Highest Occupied Molecular Orbital (HOMO) and Lowest Unoccupied Molecular Orbital (LUMO) energy levels for the porphyrins, in order to select the proper materials to assemble the device. H2P and ZnP presented fluorescence emission band in the red region, from 601 nm to 718 nm. Moreover, we verified that the introduction of bulky substituents hinders the π–π stacking, favoring the emission in the film. In addition, the strongest emitter, ZnP, presented a threshold voltage of 4 V and the maximum irradiance of 10 μW cm−2 with a current density (J) of 15 mA cm−2 at 10 V. The CuP complex showed to be a favorable material for the design of OLEDs in the infrared. These results suggest that the porphyrins derived from a renewable source, such as CNSL, is a promising material to be used in organic optoelectronic devices such as OLEDs.

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Section: Resultssupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Light-Emitting Porphyrin Derivative Obtained from a Subproduct of the Cashew Nut Shell Liquid: A Promising Material for OLED Applications

et al. 2019

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“…6 Unfortunately, however, the structural analysis of the ZnTPP thin film is very limited, [15][16][17][18] although many studies have been reported on the device applications. [6][7][8][9][10][11][12][13][14]…”

Section: Introductionmentioning

confidence: 99%

“…Porphyrin has a functionalizable skeleton and its derivatives are employed to make an active layer in organic thin film devices. − Zinc tetraphenylporphyrin (ZnTPP; Figure ) is a solvent-soluble low molecular-weight material, and a thin film can be prepared by both dry and wet processes. The spin-coated thin film is, for example, used as a p-type semiconductor in organic photovoltaic devices, , while the vapor-deposited film is incorporated in gas sensors .…”

Section: Introductionmentioning

confidence: 99%

Impact of Kinetically Restricted Structure on Thermal Conversion of Zinc Tetraphenylporphyrin Thin Films to the Triclinic and Monoclinic Phases

et al. 2018

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The powerful combination of p-polarized multiple-angle incidence resolution spectroscopy (pMAIRS) and grazing incidence X-ray diffraction (GIXD) is applied to the structural characterization of zinc tetraphenylporphyrin (ZnTPP) in vapor-deposited films as a function of the deposition rate. The deposition rate is revealed to have an impact on the initial film structure and its conversion by thermal annealing. The pMAIRS spectra reveal that a fast deposition rate yields a kinetically restricted amorphous film of ZnTPP having a “face-on orientation”, which is readily discriminated from another “randomly oriented” amorphous film generated at a slow deposition rate. In addition, the GIXD patterns reveal that the film grown at a slow deposition rate involves a minor component of triclinic crystallites. The different initial film structure significantly influences the thermal conversion of ZnTPP films. The randomly oriented amorphous aggregates with the triclinic crystallite seeds are converted to the thermodynamically stable phase (monoclinic) via the metastable triclinic phase. The kinetically restricted structure, on the other hand, is followed by a simple thermal conversion: the molecules are directly converted to the monoclinic one rather than the triclinic one.

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“…Some chromophores like metalloporphyrins are known to show room-temperature (RT) phosphorescence, which has attracted considerable attention due to various applications such as oxygen [1][2][3][4] and pressure sensors, 4,5 organic light-emitting diodes (OLED), [6][7][8][9][10][11] and sensitizers for wavelength conversion devices [12][13][14][15][16][17] based on triplet-triplet annihilation upconversion (TTA-UC) utilising high triplet quantum yield. Solid materials are preferable for such device applications; however, many RT-phosphorescence chromophores easily aggregate 18 and cause phosphorescence quenching.…”

Section: Introductionmentioning

confidence: 99%

Enhanced phosphorescence properties of a Pt-porphyrin derivative fixed on the surface of nano-porous glass

Mizokuro

Abulikemu

Sakagami

et al. 2018

Photochem Photobiol Sci

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The room-temperature phosphorescence chromophore, Pt(ii) coproporphyrin I (PtCP), was fixed on the surface of a 3D-network of nanoscale pores of porous glass through ion-exchange reaction. The absorption and phosphorescence spectra indicated that PtCP can be loaded while maintaining monomeric dispersion at concentrations well beyond solubility limits of PtCP in solution. The phosphorescence quantum yield of PtCP fixed on the surface was also found to have double the enhancement of solution. The extended lifetime of phosphorescence of PtCP bonded on the surface compared to that in solution clearly indicated that suppression of nonradiative deactivation plays a key role in high quantum yield and long triplet lifetime. This hybridization with nano-porous glass provides opportunities for various potential applications.

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Emission properties of porphyrin compounds in new polymeric PS:CBP host

Cited by 12 publications

References 22 publications

Light-Emitting Porphyrin Derivative Obtained from a Subproduct of the Cashew Nut Shell Liquid: A Promising Material for OLED Applications

Light-Emitting Porphyrin Derivative Obtained from a Subproduct of the Cashew Nut Shell Liquid: A Promising Material for OLED Applications

Impact of Kinetically Restricted Structure on Thermal Conversion of Zinc Tetraphenylporphyrin Thin Films to the Triclinic and Monoclinic Phases

Enhanced phosphorescence properties of a Pt-porphyrin derivative fixed on the surface of nano-porous glass

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