Rhodamine B absorbed by anodic porous alumina: Stokes and anti-Stokes luminescence study

Moadhen, A.; Elhouichet, Habib; Nosova, L.; Oueslati, M.

doi:10.1016/j.jlumin.2006.11.013

Cited by 27 publications

(17 citation statements)

References 22 publications

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“…Some authors [6,9], have reported the existence of such interaction in morin/PA and morin-protein/PA nanocomposites. We have shown similar results with rhodamine B impregnated in PA layer [10].…”

Section: Resultssupporting

confidence: 83%

Efficient luminescence from rhodamine 6G absorbed by porous alumina: Excitation mechanisms

Moadhen

Elhouichet

Nosova

et al. 2007

Phys. Status Solidi (c)

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Porous alumina (PA) samples are impregnated in rhodamine 6G (Rh6G) solution in order to form Rh6G/PA nanocomposites. The Fourier Transformer Infrared (FTIR) measurements show dispersion of dye molecules into the PA matrix. The investigations are focused on the photoluminescence (PL) properties and PL mechanisms in Rh6G/PA. We have discussed the effect of excitation beam wavelength on the PL spectrum of Rh6G/PA nanocomposite. It was found that the efficient luminescence of Rh6G/PA nanocomposite is governed by direct excitation and by dipolar interactions between Rh6G molecules with chemical species in alumina crystallites, as has been proved by FTIR measurements. An anti-Stokes photoluminescence (APL) has been observed using a He-Ne laser excitation. We show that its origin is related to a second order phenomenon where phonon absorption plays a key role.

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Section: Resultssupporting

confidence: 83%

Efficient luminescence from rhodamine 6G absorbed by porous alumina: Excitation mechanisms

Moadhen

Elhouichet

Nosova

et al. 2007

Phys. Status Solidi (c)

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“…The effect of confinement into the pores and the molecule's delectability into the nano channels were studied with use of Rhodamine B [11]. Functionalizing of APA surface can be done before spot deposition by spin-coating technique or by solution casting [12].…”

Section: Fluorescence Intensity Measurementsmentioning

confidence: 99%

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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“…High-transparency of anodic alumina oxide on the one hand and strong optical anisotropy on the other hand may be the reasons of growing interest to exploit this material as a cage for light-emitting species. Filling the channels of the pores of anodic alumina films with silica [36][37][38], titania [23,[39][40][41][42], alumina [43][44][45] xerogels doped with lanthanide ions Er [37][38][39], Tb [23,38,44] and Eu [35,[40][41][42]45], organic dyes [46], semiconductor nanocrystals [47,48], polymers [ 49,50], quantum dots [51,52], and biological samples [53] was investigated, and strong luminescence of optically active species incorporated in voids of anodic alumina or, probably, in its walls [54,55] was reported.…”

Section: Porous Anodic Aluminamentioning

confidence: 99%