Thermal and electron stimulated luminescence of natural bones, commercial hydroxyapatite and collagen

Roman-Lopez, J.; Correcher, V.; García-Guinea, Javier; Rivera, T.; Lozano, I.B.

doi:10.1016/j.saa.2013.10.027

Cited by 23 publications

(7 citation statements)

References 15 publications

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“…In the Raman spectroscopy results, as in the case of NMR spectra, the spectrum for the sponge material (spongin) is similar to that of collagen [54]. …”

Section: Resultsmentioning

confidence: 99%

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Adsorption of C.I. Natural Red 4 onto Spongin Skeleton of Marine Demosponge

et al. 2014

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C.I. Natural Red 4 dye, also known as carmine or cochineal, was adsorbed onto the surface of spongin-based fibrous skeleton of Hippospongia communis marine demosponge for the first time. The influence of the initial concentration of dye, the contact time, and the pH of the solution on the adsorption process was investigated. The results presented here confirm the effectiveness of the proposed method for developing a novel dye/biopolymer hybrid material. The kinetics of the adsorption of carmine onto a marine sponge were also determined. The experimental data correspond directly to a pseudo-second-order model for adsorption kinetics (r2 = 0.979–0.999). The hybrid product was subjected to various types of analysis (FT-IR, Raman, 13C CP/MAS NMR, XPS) to investigate the nature of the interactions between the spongin (adsorbent) and the dye (the adsorbate). The dominant interactions between the dye and spongin were found to be hydrogen bonds and electrostatic effects. Combining the dye with a spongin support resulted with a novel hybrid material that is potentially attractive for bioactive applications and drug delivery systems.

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“…In the Raman spectroscopy results, as in the case of NMR spectra, the spectrum for the sponge material (spongin) is similar to that of collagen [54]. …”

Section: Resultsmentioning

confidence: 99%

“…The Raman spectra of carmine, marine sponge skeleton and dye/biopolymer material are shown in Figure 10 . In the Raman spectroscopy results, as in the case of NMR spectra, the spectrum for the sponge material (spongin) is similar to that of collagen [ 54 ].…”

Section: Resultsmentioning

confidence: 99%

Adsorption of C.I. Natural Red 4 onto Spongin Skeleton of Marine Demosponge

et al. 2014

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“…d) presents the apatititc characteristic vibrational bands. The bands from around 433 and 594/cm are associated to the bending mode of the phosphate group , while the bands from 961/cm and around 1,046 and 1,076/cm are characteristic to the stretching modes of the phosphate functional group . The two spectra acquired for the AgHApC2 (Fig.…”

Section: Resultsmentioning

confidence: 93%

Physicochemical and antimicrobial properties of silver‐doped hydroxyapatite collagen biocomposite

Predoi

Iconaru

Albu

et al. 2017

Polymer Engineering & Sci

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Silver‐doped hydroxyapatite (AgHAp) was prepared by co‐precipitation method at room temperature. The obtained AgHAp was added in different amounts of collagen gel (AgHApC1 and AgHApC2). Afterward, the gel was lyophilized and the final AgHApC1 and AgHApC2 composite was achieved. The purity, crystallinity, and the phase composition of the AgHAp, AgHApC1, and AgHApC2 samples were evaluated by X‐ray diffraction (XRD). The planes corresponding to the 2θ values for hydroxyapatite were found in the three samples analyzed in agreement with the crystalline hydroxyapatite. In the Fourier transform infrared (FT‐IR) spectra of AgHApC1 and AgHApC2 samples the peak characteristic to the presence of ν2 phosphate mode at 472/cm was found. The peaks resulting from the ν4 vibration of the P–O mode, ν1 symmetric P–O stretching vibration and ν3 P–O stretching vibration of PO43− were also evidenced in all the samples. The formation of agglomerated particles with uniform particle size was evidenced by scanning electron microscope (SEM). The uniform distribution of the constituent elements was evidenced by mapping analysis. Furthermore, the strong antibacterial activity of AgHAp, AgHApC1, and AgHApC2 samples against Gram‐negative (Escherichia coli) and Gram‐positive (Staphylococcus aureus) bacterial strains was shown. The inhibition zone increased drastically with the increase of silver concentration. POLYM. ENG. SCI., 57:537–545, 2017. © 2017 Society of Plastics Engineers

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“…As a consequence, even the wide band-gap materials can be excited, and cathodoluminescence photons occur among other elastic or inelastic interactions of an incident electron and the exposed material, which can lead to a variety of different contrasts 17 . Additionally, cathodoluminescence can also provide spectral information about a studied material 18,19 , alternative to that of photoluminescence utilized in a regular optical microscopy. Cathodoluminescence imaging of biological samples, however, is extremely challenging due to technological limitations in efficient collection of usually very low intensity optical signals from biological specimens.…”

Section: Introductionmentioning

confidence: 99%

Quantitative intrinsic auto-cathodoluminescence can resolve spectral signatures of tissue-isolated collagen extracellular matrix

Zieliński¹,

Vardar

Vythilingam

et al. 2019

Commun Biol

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By analyzing isolated collagen gel samples, we demonstrated in situ detection of spectrally deconvoluted auto-cathodoluminescence signatures of specific molecular content with precise spatial localization over a maximum field of view of 300 µm. Correlation of the secondary electron and the hyperspectral images proved ~40 nm resolution in the optical channel, obtained due to a short carrier diffusion length, suppressed by fibril dimensions and poor electrical conductivity specific to their organic composition. By correlating spectrally analyzed auto-cathodoluminescence with mass spectroscopy data, we differentiated spectral signatures of two extracellular matrices, namely human fibrin complex and rat tail collagen isolate, and uncovered differences in protein distributions of isolated extracellular matrix networks of heterogeneous populations. Furthermore, we demonstrated that cathodoluminescence can monitor the progress of a human cell-mediated remodeling process, where human collagenous matrix was deposited within a rat collagenous matrix. The revealed change of the heterogeneous biological composition was confirmed by mass spectroscopy.

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Thermal and electron stimulated luminescence of natural bones, commercial hydroxyapatite and collagen

Cited by 23 publications

References 15 publications

Adsorption of C.I. Natural Red 4 onto Spongin Skeleton of Marine Demosponge

Adsorption of C.I. Natural Red 4 onto Spongin Skeleton of Marine Demosponge

Physicochemical and antimicrobial properties of silver‐doped hydroxyapatite collagen biocomposite

Quantitative intrinsic auto-cathodoluminescence can resolve spectral signatures of tissue-isolated collagen extracellular matrix

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