Fluorescence tuning of 2D montmorillonite optically active layers with beta-cyclodextrine/dye supramolecular complexes

Matejdes, Marián; Czı́merová, Adriana; Janek, M.

doi:10.1016/j.clay.2015.05.002

Cited by 9 publications

(6 citation statements)

References 42 publications

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“…In particular, we tested six dyes belonging to the xanthene family (FITC, Rho, E, CNF, CFF and Fluo) and two coumarin derivatives (CNH 2 and COH), which are commonly used for biological and nonbiological applications due to their good fluorescent properties and biocompatibility ( Scheme 1 , Section 2.2 ). In order to promote adsorption and avoid the well-documented tendency to form molecular aggregates on the particles’ surface [ 31 , 32 ], six of the tested dyes (FITC, Rho, E, CNF, CCF and CNH 2 ) were previously conjugated with chitosan, and the achieved fluorescent polymers (Chi_FITC, Chi_Rho, Chi_E, Chi_CNF, Chi_CCF and Chi_CNH 2 ) were then adsorbed on the MMT particles ( Figure S1 ).…”

Section: Resultsmentioning

confidence: 99%

Changes in Optical Properties upon Dye–Clay Interaction: Experimental Evaluation and Applications

2021

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The development of hybrid materials with unique optical properties has been a challenge for the creation of high-performance composites. The improved photophysical and photochemical properties observed when fluorophores interact with clay minerals, as well as the accessibility and easy handling of such natural materials, make these nanocomposites attractive for designing novel optical hybrid materials. Here, we present a method of promoting this interaction by conjugating dyes with chitosan. The fluorescent properties of conjugated dye–montmorillonite (MMT) hybrids were similar to those of free dye–MMT hybrids. Moreover, we analyzed the relationship between the changes in optical properties of the dye interacting with clay and its structure and defined the physical and chemical mechanisms that take place upon dye–MMT interactions leading to the optical changes. Conjugation to chitosan additionally ensures stable adsorption on clay nanoplatelets due to the strong electrostatic interaction between chitosan and clay. This work thus provides a method to facilitate the design of solid-state hybrid nanomaterials relevant for potential applications in bioimaging, sensing and optical purposes.

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Section: Resultsmentioning

confidence: 99%

Changes in Optical Properties upon Dye–Clay Interaction: Experimental Evaluation and Applications

2021

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“…specic surface area, which might affect the surface-adsorption capacity of clay for water treatment. 16,30 3.2. IBE and E (W-M) of Na-and Ca-MMTs…”

Section: Molecular Dynamics Simulationmentioning

confidence: 99%

“…10 MMT nanosheets also exhibit excellent adsorption capability in removing dyes from aqueous solutions or heavy metal ions in water. 16 Moreover, the 2D MMT nanosheet has wide application in industry for its better mechanical/ heat stability properties, barrier properties or gas absorbability than graphene nanosheets. 14 Thus, the exfoliated nanosheets of MMT may have potential application in the elds of hydrogen accumulators, catalysts and other potential elds.…”

Section: Introductionmentioning

confidence: 99%

Correlation of montmorillonite exfoliation with interlayer cations in the preparation of two-dimensional nanosheets

Zhang

Bai

et al. 2017

RSC Adv.

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“…The optical properties of these materials often depend on humidity, which could be used for sensing applications. The other approaches included further components, such as polyelectrolytes (Czimerová et al, 2013) or molecular cavitands (Ishida et al, 2014;Matejdes et al, 2015) to avoid dye aggregation and improve photoactivity.…”

Section: P H E N O M E N a A N D P R O P E Rt I E S R E L At E D T O mentioning

confidence: 99%

Hybrid systems based on organic dyes and clay minerals: Fundamentals and potential applications

Bujdák

2015

Clay miner.

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This review summarizes several aspects of the interactions between organic dyes and clay minerals, and presents some interesting properties of hybrid materials based on these components. It explains the basic phenomena and photophysical properties of dye/clay mineral hybrid systems (DCHS) while examining the role of clay minerals in them. A brief history of using dyes as tools for clay research and on traditional materials based on DCHS is presented. Metachromasy, the phenomenon of colour change related to the formation of dye molecular aggregates is described in detail and analysed from various perspectives. The properties of DCHS, including photoactivity, luminescence, photocatalytic properties, optical anisotropy and non-linear optical properties are analysed in detail. Clay minerals often play a significant role in the occurrence of specific photophysical phenomena such as resonance energy transfer and luminescence quenching and may influence various reactions, such as conformational changes in dye molecules, photochromism, photoisomerization, photosensitization and other photochemical processes. Routes to synthesize various types of hybrid materials are also described here. The relevance of DCHS for clay research, chemistry and materials science is summarized briefly.

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Fluorescence tuning of 2D montmorillonite optically active layers with beta-cyclodextrine/dye supramolecular complexes

Cited by 9 publications

References 42 publications

Changes in Optical Properties upon Dye–Clay Interaction: Experimental Evaluation and Applications

Changes in Optical Properties upon Dye–Clay Interaction: Experimental Evaluation and Applications

Correlation of montmorillonite exfoliation with interlayer cations in the preparation of two-dimensional nanosheets

Hybrid systems based on organic dyes and clay minerals: Fundamentals and potential applications

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