Reinvestigation of hybrid organic–inorganic materials based on molybdate and piperazininum cations: Influence of the synthesis conditions on the chemical composition and characterizations of the photochromic properties

Coué, Violaine; Dessapt, Rémi; Bujoli-Doeuff, Martine; Evain, Michel; Jobic, Stéphane

doi:10.1016/j.jssc.2008.02.010

Cited by 12 publications

(9 citation statements)

References 11 publications

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“…In comparison to the IR spectra of gelatin and AHM, the spectrum of the freeze-dried hybrid nanoparticles showed that in addition to the intrinsic gelatin absorptions, there were also six characteristic peaks belonging to HM, which are three strong absorption bands at 950, 910, and 868 cm À1 assigned to the Mo ¼ O t vibrations, and three strong absorption bands at 842, 712, and 659 cm À1 corresponding to MoÀO m vibrations. [29,30] This confirms the coexistence of HM and gelatin in the obtained nanoparticles. Figure 3 shows a typical TEM image of the crosslinked gelatin/HM nanoparticles.…”

Section: Preparation Of Gelatin/hm Hybrid Nanoparticlessupporting

confidence: 77%

Synthesis and Antitumoral Activity of Gelatin/Polyoxometalate Hybrid Nanoparticles

Guo

Cheng

et al. 2011

Macromolecular Bioscience

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Surfactant-free gelatin/heptamolybdate (HM) hybrid nanoparticles are prepared by a simple and environmentally friendly approach utilizing the electrostatic interaction between anionic HM and the zwitterionic gelatin. The obtained nanoparticles have a tunable size and very high HM loading content up to about 70%. In vitro and in vivo experiments prove that the gelatin/HM hybrid nanoparticles exhibit significantly better antitumor activity than plain ammonium heptamolybdate solution. Therefore, the gelatin/HM hybrid nanoparticles reported here may serve as a prototype platform for polymer/polyoxometalate (POM) hybrid nanoparticles as cancer treatment agents and hence open up more opportunities to maximize the potential of POM-based pharmaceutical agents.

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Section: Preparation Of Gelatin/hm Hybrid Nanoparticlessupporting

confidence: 77%

Synthesis and Antitumoral Activity of Gelatin/Polyoxometalate Hybrid Nanoparticles

Guo

Cheng

et al. 2011

Macromolecular Bioscience

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“…FT‐IR analysis was conducted to characterize the gelatin/HM hybrid system (Figure 2). In comparison to the IR spectra of gelatin and AHM, the spectrum of the freeze‐dried hybrid nanoparticles showed that in addition to the intrinsic gelatin absorptions, there were also six characteristic peaks belonging to HM, which are three strong absorption bands at 950, 910, and 868 cm −1 assigned to the Mo = O t vibrations, and three strong absorption bands at 842, 712, and 659 cm −1 corresponding to MoO µ vibrations 29, 30. This confirms the coexistence of HM and gelatin in the obtained nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Convergent Assembly and Surface Modification of Multifunctional Dendrimers by Three Consecutive Click Reactions

Ledin

Friscourt

Guo

et al. 2010

Chemistry A European J

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Multifunctional dendrimers bearing two or more surface functionalities have the promise to provide smart drug delivery devices that can for example combine tissue targeting and imaging or be directed more precisely to a specific tissue or cell type. We have developed a concise synthetic methodology for efficient dendrimer assembly and heterobifunctionalization based on three sequential azide-alkyne cycloadditions. The methodology is compatible with biologically important compounds rich in chemical functionalities such as peptides, carbohydrates and fluorescent tags. In the approach, a strain promoted azide-alkyne cycloaddition (SPAAC) between polyester dendrons modified at the focal point with an azido and 4-dibenzocyclooctynol (DIBO) moiety provided dendrimers bearing terminal and TMS-protected alkynes at the periphery. The terminal alkynes were outfitted with azido-modified polyethylene glycol (PEG) chains or galactosyl residues using CuI catalyzed azide-alkyne cycloadditions (CuAAC). Next, a one-pot TMS-deprotection and second click reaction of the resulting terminal alkyne with azido-containing compounds gave multifunctional dendrimers bearing complex biologically active moieties at the periphery.

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“…And then 1 M HCl aqueous solution was added dropwise with magnetic stirring at room temperature until a white precipitate appeared (pH 4-5). After a reaction at 50 C for 2 hours, the product was filtered and thoroughly washed with ethanol, and then dried at 50 O nanowires, and the amount of ethylenediamine and pyridine was 0.80 and 1.50 g, respectively.…”

Section: Experimental 21 Synthesis Of Moo X -Based Organic-inorganic ...mentioning

confidence: 99%

“…It was reported that the structures of molybdate-anion clusters are associated with the pH conditions of solution, [48][49][50] implying the possibility to change growth habits and product morphology through varying the pH level. As shown in Fig.…”

Section: Ph Conditionsmentioning

confidence: 99%

One-dimensional growth of MoOx-based organic–inorganic hybrid nanowires with tunable photochromic properties

et al. 2012

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The diverse structures of molybdate anions significantly provide new opportunities to design various nanostructures of MoO x -based organic-inorganic hybrids with prominent catalytic, electrochemical and photo/electrochromic properties. In this paper, the one-dimensional (1D) growth originating from anisotropic molybdate anions is successfully introduced to prepare a series of hybrid nanowires of Mo 3 O 10 (C 6 H 8 N) 2 $2H 2 O (anilinium trimolybdate), Mo 3 O 10 (C 2 H 10 N 2 ) (ethylenediamine trimolybdate) and Mo 3 O 10 (C 5 H 6 N) 2 $H 2 O (pyridium trimolybdate). Taking Mo 3 O 10 (C 6 H 8 N) 2 $2H 2 O for example, the 1D growth is proved to be associated with the chain-like structure of Mo 3 O 10 2À anions by both experiments and quantum chemical calculations. Meanwhile, the synthesis parameters, e.g., reacting time, pH conditions and feeding ratio, show obvious influences on product morphologies based on different molybdate anions, further validating the growth mechanism. More importantly, the asobtained MoO x /amine nanostructures remarkably exhibit tunable photochromic properties depending on their 1D structures and hybrid composites, which presents the potential to design well-tailored functional optical nanodevices.

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Reinvestigation of hybrid organic–inorganic materials based on molybdate and piperazininum cations: Influence of the synthesis conditions on the chemical composition and characterizations of the photochromic properties

Cited by 12 publications

References 11 publications

Synthesis and Antitumoral Activity of Gelatin/Polyoxometalate Hybrid Nanoparticles

Synthesis and Antitumoral Activity of Gelatin/Polyoxometalate Hybrid Nanoparticles

Convergent Assembly and Surface Modification of Multifunctional Dendrimers by Three Consecutive Click Reactions

One-dimensional growth of MoOx-based organic–inorganic hybrid nanowires with tunable photochromic properties

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