Ultraviolet photodegradation of tris(8-hydroxy-quinolinate) aluminum (Alq3) thin films studied by electron and laser stimulated desorption

Brito, Walter Ricardo; Quirino, Welber G.; Legnani, Cristiano; Ponciano, C.R.; Cremona, M.; Rocco, Maria Luiza M.

doi:10.1016/j.optmat.2012.06.010

Cited by 7 publications

(4 citation statements)

References 18 publications

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“…The emission characteristics depend on both the nature and pressure of the gas. The mercury (Hg) and xenon (Xe) vapour lamps have great applicability in the market (NEYENS and BAEYENS, 2003;BRITO et al, 2012).…”

Section: Artificial Sources Of Ultraviolet Radiationmentioning

confidence: 99%

A brief review on the importance use of solar energy in the treatment of recalcitrant effluents applying advanced oxidation processes

Queiroz¹,

Sabará

Alvim³

et al. 2015

CeN

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Several studies have reported the adverse effects of persistent compounds in the wastewater, showing the fragility of the biologic treatment. Harmful effects for both aquatic biota and human being are caused by those compounds. In order to minimize the adverse environmental impacts, Advanced Oxidation Processes (AOPs) are used in the degradation of those pollutants to achieve high removal rates. In the present the comparisons between the efficiency of AOPs using natural and artificial Ultra Violet light (UV) were made based on the literature review, addressing constructive and operational characteristics of the reactors. The findings indicated that the high levels of solar energy, which are registered in different regions of Brazil, show the viability of the AOP using natural radiation to the decontamination of industrial effluents. Thus the inclusion of advanced oxidation in the treatment of wastewater could be considered as a significant contribution to the supported development in Brazil.

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Section: Artificial Sources Of Ultraviolet Radiationmentioning

confidence: 99%

A brief review on the importance use of solar energy in the treatment of recalcitrant effluents applying advanced oxidation processes

Queiroz¹,

Sabará

Alvim³

et al. 2015

CeN

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“…Another way is grafting Alq3 in a matrix with chemical bonds, which potentially increases the concentration of Alq3 in the final structure. In other works [22,23], attaching Alq3 to hybrid structures are reported but no data for their use in OLED structures were obtained.…”

Section: Introductionmentioning

confidence: 99%

“…However, spin coating method due to its less need to use sophisticated equipments and working constrains such as high vacuum has found more advocates compared to PVD method [20,22]. Insolubility in common solvents is one of most important limitations of Alq3 to be deposited by spin coating [22,23].…”

Section: Introductionmentioning

confidence: 99%

Photo and electroluminescence of a solution processable silane modified Alq3 composite showing bluish green emission

Modiri

Mohseni

Mohajerani

2015

J Mater Sci: Mater Electron

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A solution processable hybrid organic-inorganic composite functionalized with Alq3 was used as an emitting layer in an OLED device. The advantage of the spin-coated films is its ease of layer deposition method to replace physical vapor deposition. Investigation of chemical structure of these networks was performed by different techniques including 1 H-NMR, FT-IR, DSC and SEM. Results revealed that a silicone based structure was produced in which Alq3 has been attached to silane precursor through amine groups of silane and sulfonic functionality of 8-hydroxyquinoline. Electrical behavior of the samples was measured by cyclic voltammetry method. Photoluminescence and electroluminescence analyses showed that hybrid organic-inorganic Alq3-network can be used in OLED devices to replace conventional Alq3. While the band gap of the pristine Alq3 is 2.70 eV, that of the silane modified Alq3 has shifted to 2.83 eV. This shows a blue shift in emitted color.

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“…For each material, four independent samples were analyzed, the experimental results were finally averaged and the error bar was calculated accordingly. Meanwhile, for Alq3, the photodegradation leads to the formation of carboxylate groups bound to Al [123], but the precise mechanism leading to the quenching of the -diketonate complex is not still understood [124].…”

Section: Degradation Of Alq 3 and Eu(dbm) 3 (Phen) Thin Films Under Uva Irradiationmentioning

confidence: 99%

Surface Plasmon Resonance Spectroscopy for the Characterization of Nanoparticles, Organic Thin Film and 2-D Materials

ZAMAN¹

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Studying and carrying out high level scientific research was a great honor for me and I am very grateful to all of peoples who have helped me a lot with their guidance, knowledge, assistance and patience. I am deeply thankful to my supervisor Tommaso Del Rosso who is incredibly smart, good and very kind person. It is his trust and motivation from beginning to end that enables me to focus my mind and efforts on my research.

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Ultraviolet photodegradation of tris(8-hydroxy-quinolinate) aluminum (Alq3) thin films studied by electron and laser stimulated desorption

Cited by 7 publications

References 18 publications

A brief review on the importance use of solar energy in the treatment of recalcitrant effluents applying advanced oxidation processes

A brief review on the importance use of solar energy in the treatment of recalcitrant effluents applying advanced oxidation processes

Photo and electroluminescence of a solution processable silane modified Alq3 composite showing bluish green emission

Surface Plasmon Resonance Spectroscopy for the Characterization of Nanoparticles, Organic Thin Film and 2-D Materials

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