Photoluminescence properties of anodic alumina membranes with ordered nanopore arrays

Sun, Xiuyu; Xu, F.; Li, Zongmu; Zhang, Wenhua

doi:10.1016/j.jlumin.2005.12.057

Cited by 61 publications

(36 citation statements)

References 33 publications

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“…Figure 2 shows the X-ray diffraction (XRD) spectra of AAMs annealed at different temperatures for 4 h in N 2 . These results indicate that the prepared and low temperature-annealed AAMs are amorphous and that the AAMs are partly crystallized after being annealed at 800°C (9,13).…”

Section: Introductionmentioning

confidence: 76%

“…It is associated with continuous removal of the structural water in the hydroxide and oxy-hydroxide of aluminium (12). There are also three exothermic peaks: that at 200-815°C is due to the decomposition of metal oxalates, that at 869°C is due to the crystallization of AAMs from the amorphous to the γ phase (10, 13), whereas that at >994°C is due to the appearance of the α-Al 2 O 3 phase (10, 12).…”

Section: Experimental Results and Analysesmentioning

confidence: 99%

“…7.423%, which may come from desorbing of chemisorbed water molecules. The third section, from 200°C to 852°C, is related to the decomposition of oxalic impurities because the decomposition of metal oxalates is believed to occur at temperatures higher than 350°C (13). The long temperature range for this section indicates that quite a number of oxalic ions are incorporated within the structure of the porous AAMs.…”

Section: Experimental Results and Analysesmentioning

confidence: 99%

“…Figure 7 shows two peaks on the high-energy side of the obtained PLE Gaussian fitting spectrum that are related to oxygen vacancies; curve 1 is correlated with the F centres and curve 2 is related to the F + centres. During the growth of AAMs, the electrochemical anodization of aluminium may be insufficient, leaving some residual metallic aluminium that will be oxidized in the subsequent heating treatment (13). The oxygen reacting with the remaining aluminium comes mainly from the porous alumina membrane itself, in the annealing process in an oxygen-poor atmosphere.…”

Section: Experimental Results and Analysesmentioning

confidence: 99%

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The effect of high‐temperature annealing on optical properties of porous anodic alumina formed in oxalic acid

Huang

2007

Luminescence

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Photoluminescence (PL) of anodic alumina membranes (AAMs) with ordered nanopore arrays fabricated in oxalic acid has been investigated under different annealing temperatures. X-ray diffraction reveals the structural transition from the amorphous state to crystallization. PL measurements show that a blue PL band occurs in the wavelength range 300-600 nm. The differential thermal analysis (DTA) and thermogravimetric analysis (TG) results revealed plentiful oxalic ions incorporated into the prepared AAMs. The PL band of AAMs could be attributed to the co-actions of the oxygen vacancies (F(+) and F centres) and the luminescent centres transformed from oxalic impurities. With the increase of the annealing temperature, the intensities of PL increase first, and at 500 degrees C reach a maximum value, then decrease. The PL phenomenon is intimately related to the temperature-induced structural transitions. There are three optical centres in the annealed AAMs; the first is originates from the F centres, the second is correlated with F(+) centres and the third is associated with the oxalic impurities incorporated in the AAMs.

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Section: Introductionmentioning

confidence: 76%

Section: Experimental Results and Analysesmentioning

confidence: 99%

Section: Experimental Results and Analysesmentioning

confidence: 99%

Section: Experimental Results and Analysesmentioning

confidence: 99%

See 2 more Smart Citations

The effect of high‐temperature annealing on optical properties of porous anodic alumina formed in oxalic acid

Huang

2007

Luminescence

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“…Several methods have been used to confine or impregnate dyes in APA cavities [13]. Spectroscopic investigations are of use for in the confinement studies also of dye molecules [14][15][16][17]. The present work aimed to confirm that APA surface able to host macromolecules in to its pores.…”

Section: Fluorescence Intensity Measurementsmentioning

confidence: 85%

Protein Confinement in the Anodic Porous Alumina Microarray

Larosa¹,

Fiordoro²,

Nicolini³

et al. 2017

NanoWorld J

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Alternative approaches to solve the complexity of protein function in the proteomic field required new arrays in nano-micro-scale dimension. Anodic Porous Alumina (APA), a geometrically ordered inorganic oxide, grown from ultrapure aluminum by anodic oxidation, was used in this work as an ordered array for the confinement of protein molecules by spin-coating technique. This microor nanostructured material can be used in different ways, both for the traditional fluorescence approach and for novel label-free methods. The aim of the present study is the proof of principle that the protein molecules can enter the APA micropores, as shown by fluorescein-labeled lysozyme confined into the APA template. Fluorescence intensity measurement as well as Raman Spectroscopy confirm that protein was incorporated into the APA micropores.

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Effect of heat treatment in vacuum on photoluminescence of anodic alumina

Gasenkova¹,

Мухуров²,

Zhvavyi³

et al. 2019

Luminescence

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The results are presented of a study of the photoluminescent (PL) properties of an undoped porous anodic alumina (PAA) and PAA doped with manganese ions. The PAA samples were prepared by anodization of aluminum. The effect of annealing conditions in vacuum on the PL spectra was studied for the first time and a comparative analysis was made with the spectra of the PAA annealed in air. Vacuum annealing was used to obtain oxygen-deficient alumina. A strong dependence of the PAA PL intensity on the annealing temperature in vacuum has been found: for the samples annealed at 600°С, the PL intensity is 15 times higher than that measured on the initial samples, whereas for the samples annealed in air it increases only 4.5-fold with excitation at the wavelengths of 275 nm. This is the result of the formation of a high concentration of oxygen vacancies during annealing in vacuum under conditions of oxygen deficiency as compared with the samples annealed in air, where diffusion of oxygen from air leads to a decrease in vacancies. A significant increase in the PL intensity permits consideration of the vacuum-annealed PAA as a promising material for dosimetry.

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Photoluminescence properties of anodic alumina membranes with ordered nanopore arrays

Cited by 61 publications

References 33 publications

The effect of high‐temperature annealing on optical properties of porous anodic alumina formed in oxalic acid

The effect of high‐temperature annealing on optical properties of porous anodic alumina formed in oxalic acid

Protein Confinement in the Anodic Porous Alumina Microarray

Effect of heat treatment in vacuum on photoluminescence of anodic alumina

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