Effect of surface and interlayer structure on the fluorescence of rhodamine B–montmorillonite: modeling and experiment

Čapková, Pavla; Malý, P.; Pospı́šil, Miroslav; Klika, Zdeněk; Weissmannová, Helena Doležalová; Weiss, Zdeněk

doi:10.1016/j.jcis.2004.03.035

Cited by 26 publications

(12 citation statements)

References 26 publications

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“…Conventionally colorants can be divided into two mainly groups: dyes which are organic substances and pigments which usually are inorganic substances. Nevertheless, each group has its advantages [6] and drawbacks. Dyes give intense and brilliant colors.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Synthesis, characterization and assessment thermal properties of clay based nanopigments

Edraki

Kievani

2015

Front. Chem. Sci. Eng.

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Nano-clay based pigments (NCP) are new type of pigments composed of organic dyes and layered silicateclay nano-particles, and have already been used in polymeric coatings to improve mechanical thermal and stability properties. In this paper, the basic blue 41(BB41) was intercalated into Na + -montmorillonite in an aqueous medium. The dye-intercalated montmorillonite was centrifuged, dried, and milled to prepare the nanopigment particles. X-ray diffraction showed an increase in the basal spacing, thus confirming intercalation of the BB41 molecules within the nanostructures of the interlayer spaces. Fourier transform infrared spectroscopy was used for identifying the functional groups and chemical bounding of Na + -montmorillonite, BB41 and montmorillonite-BB41. The morphology of NCP was also studied by transmission electron microscopy. Finally, thermogravimetric analysis and differential thermograms suggested the thermal stability of the intercalated dye was improved.

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Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Synthesis, characterization and assessment thermal properties of clay based nanopigments

Edraki

Kievani

2015

Front. Chem. Sci. Eng.

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“…For the acquisition of a perspective on the ordering of molecules in interlayers, the method of molecular modeling is an invaluable tool [14][15][16]. The results obtained by this method show that intercalated molecules (guests) deposited in the interlayers of, e.g., smectites (host) are bonded to basal tetrahedral nets of clay minerals by weak interactions (van der Waals, Coulomb, and H-bonds).…”

Section: Introductionmentioning

confidence: 99%

Composition, structure, and luminescence of montmorillonites saturated with different aggregates of methylene blue

Klika

Čapková

Horáková

et al. 2007

Journal of Colloid and Interface Science

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“…(1) the C18 hydrocarbon chain on our RhB18, which is absent from RhB; (2) the water content of the LB films might be different from that in the RhB-WB systems of Klika et al (2004) andČ apková et al (2004). In the LB films from the present study, the water content was small or even zero (Ras et al, 2003).…”

Section: Sizes and Shapes Of Smectite Layersmentioning

confidence: 65%

“…The heights represent clay layers with adsorbed RhB18 molecules and, possibly, water. Two possible configurations for RhB adsorbed on Wyoming bentonite were established by Klika et al (2004) andČ apková et al (2004), one with a basal spacing of 1.8 nm and another with a basal spacing of 2.3 nm. The values agree well with the characteristic heights established in the present study: 1.8 and 2.1 nm.…”

Section: Sizes and Shapes Of Smectite Layersmentioning

confidence: 99%

AFM Study of Smectites in Hybrid Langmuir-Blodgett Films: Saponite, Wyoming Bentonite, Hectorite, and Laponite

Szabó

Wang

Volodin

et al. 2009

Clays and clay miner.

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The sizes and shapes of single clay mineral layers are difficult to determine though they are important parameters which determine the final properties of clay polymer nanocomposites and of ultrathin clay mineral films. To determine these sizes and shapes, hybrid monolayers of clay minerals (saponite, hectorite, Wyoming bentonite, and Laponite) and Rhodamine B octadecyl ester perchlorate (RhB18) were prepared using the Langmuir-Blodgett (LB) technique and studied with atomic force microscopy (AFM). The AFM images reveal monolayers of elementary clay mineral layers, which are randomly oriented and have a wide range of sizes. The layers have typical shapes: lath-like for hectorite, plates for Wyoming bentonite, a mixture of laths and plates for saponite, and aggregates of very small layers of Laponite. Two types of layers were present in the LB films of saponite, Wyoming bentonite, and hectorite in a 40:60 ratio:(1) single layers 0.96 nm thick hybridized with RhB18; and (2) particles consisting of two clay layers with an intercalated monomolecular layer of water molecules and hybridized with RhB18. The Laponite particles in the hybrid LB films consist mainly of aggregates of two and three single layers.

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Effect of surface and interlayer structure on the fluorescence of rhodamine B–montmorillonite: modeling and experiment

Cited by 26 publications

References 26 publications

RETRACTED ARTICLE: Synthesis, characterization and assessment thermal properties of clay based nanopigments

RETRACTED ARTICLE: Synthesis, characterization and assessment thermal properties of clay based nanopigments

Composition, structure, and luminescence of montmorillonites saturated with different aggregates of methylene blue

AFM Study of Smectites in Hybrid Langmuir-Blodgett Films: Saponite, Wyoming Bentonite, Hectorite, and Laponite

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