Guests in Nanochannels of Zeolite L

Calzaferri, Gion

doi:10.1007/430_2020_57

Cited by 6 publications

(26 citation statements)

References 204 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7 ZL might be the only known material with a thermal and mechanic stability that has linear channels of about 1 nm diameter. 8 Dyes inside nanochannels exhibit unusual photophysical and photochemical properties due to the confinement offered by the host system. This confinement protects molecules from undesirable reactions such as photodegradation, oxidation, and photoisomerization.…”

Section: ■ Introductionmentioning

confidence: 99%

“…12 Ionic dyes in solution adsorb themselves onto nanochannel walls through ion-exchange mechanisms, while neutral dyes require an insertion in the gas phase or from dispersions. 8 Molecules inside ZL nanochannels at high loadings (20%) undergo Davydov excitonic J-coupling, leading to the appearance of linear J-aggregates at both ends of nanochannels, while dyes between the ends of nanochannels do not form these aggregates. 13,14 Therefore, both Forster and Davydov energy-transfer mechanisms coexist in the same antenna material, and molecular spacers control end-to-end intermolecular distances to employ simultaneously both mechanisms to increase energy transfer.…”

Section: ■ Introductionmentioning

confidence: 99%

“…A crystal bearing a diameter of 600 nm possesses around 100,000 nanochannels; thus, a 60 nm × 60 nm (diameter and length) crystal is able to host nearly 40,000 molecules if they have a length of 1.5 nm . ZL might be the only known material with a thermal and mechanic stability that has linear channels of about 1 nm diameter …”

Section: Introductionmentioning

confidence: 99%

“…Even very photolabile dyes in solution remain without significant photodegradation once they enter ZL nanochannels . Ionic dyes in solution adsorb themselves onto nanochannel walls through ion-exchange mechanisms, while neutral dyes require an insertion in the gas phase or from dispersions …”

Section: Introductionmentioning

confidence: 99%

“…As donors and acceptors can bear identical chromophores, it is easier to choose a dye to span a target absorption bandwidth, where both pigments contribute to absorbing the suitable photons with the same efficiency. While the Calzaferri group patented the first photonic antenna material based on ZL called ZeoFRET, Calzaferri published by himself an essential book chapter that summarizes the state-of-the-art of dye–ZL composites …”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Theoretical FRET Efficiency of an Antenna Material Containing Natural Dyes and Zeolite L

et al. 2023

View full text Add to dashboard Cite

We calculated the Förster resonance energy-transfer (FRET) efficiency of a theoretical host–guest composite formed by all-trans β-cryptoxanthin (BCRY), all-trans zeaxanthin (ZEA), and a zeolite-LTL (Linde Type L) nanochannel with the help of computational chemistry tools. Climate change demands urgently the development of novel renewable energies, and in such a context, artificial photosynthesis arises as a promising technology capable of contributing to satisfying humankind’s energy needs. All artificial photosynthetic devices need antennas to harvest and transfer energy to a reaction center efficiently. Antenna materials integrated by highly fluorescent synthetic pigments embedded onto the nanochannels of a zeolite-LTL have already been shown experimentally to be very efficient supramolecular assemblies. However, research work computing the efficiency of an antenna made of nonfluorescent natural pigments and a zeolite-LTL nanochannel has not been undertaken yet, at least to our knowledge. Fortunately, natural dyes possess outstanding features to study them dynamically; they are environmentally friendly, inexpensive, ubiquitous, and abundant. Density functional theory (DFT) methods were chiefly employed along with the CAM-B3LYP functional and the 3-21G*/6-311+G(d,p) basis sets. The ONIOM method enabled geometry and energy calculations of dyes inside the zeolite-LTL (ZL) nanochannel. The Förster resonance energy-transfer (FRET) efficiency and the Förster radius of the composite were 40.9% and 24.9 Å, respectively. Theoretical findings suggested that this composite might contribute to diminishing costs and improving the environmental friendliness of an antenna system.

show abstract

Section: ■ Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Theoretical FRET Efficiency of an Antenna Material Containing Natural Dyes and Zeolite L

et al. 2023

View full text Add to dashboard Cite

show abstract

Fluorescent Nanozeolite Receptors for the Highly Selective and Sensitive Detection of Neurotransmitters in Water and Biofluids

et al. 2021

View full text Add to dashboard Cite

The design and preparation of synthetic binders (SBs) applicable for small biomolecule sensing in aqueous media remains very challenging. SBs designed by the lock‐and‐key principle can be selective for their target analyte but usually show an insufficient binding strength in water. In contrast, SBs based on symmetric macrocycles with a hydrophobic cavity can display high binding affinities but generally suffer from indiscriminate binding of many analytes. Herein, a completely new and modular receptor design strategy based on microporous hybrid materials is presented yielding zeolite‐based artificial receptors (ZARs) which reversibly bind the neurotransmitters serotonin and dopamine with unprecedented affinity and selectivity even in saline biofluids. ZARs are thought to uniquely exploit both the non‐classical hydrophobic effect and direct non‐covalent recognition motifs, which is supported by in‐depth photophysical, and calorimetric experiments combined with full atomistic modeling. ZARs are thermally and chemically robust and can be readily prepared at gram scales. Their applicability for the label‐free monitoring of important enzymatic reactions, for (two‐photon) fluorescence imaging, and for high‐throughput diagnostics in biofluids is demonstrated. This study showcases that artificial receptor based on microporous hybrid materials can overcome standing limitations of synthetic chemosensors, paving the way towards personalized diagnostics and metabolomics.

show abstract

Sealing of Zeolite L Channels with Ethoxysilanes: Influence of Molecular Structure and Thermal Treatment

Lustenberger,

Brühwiler

2024

ChemistrySelect

View full text Add to dashboard Cite

The suitability of silanes H2N(C3H6)Si(OC2H5)3‐x(CH3)x (x=0, 1, 2) for the sealing of zeolite pores has been investigated. The sealing efficiency was evaluated by observing the exit kinetics of the fluorescent dye resorufin from the one‐dimensional main channels of zeolite L (ZL). The best results in terms of sealing quality were obtained with x=0, indicating the importance of ensuring maximum probability for siloxane bond formation and cross‐linking during the sealing process. The amino group thereby plays a crucial role in the positioning of the silane prior to covalent bond formation. Samples sealed with 3‐aminopropyltriethoxysilane (APTES) showed excellent stability against leaching in aqueous medium even under moderately alkaline conditions. Further evidence for the ability of APTES to efficiently seal the channels of ZL was obtained by nitrogen sorption measurements.

show abstract

Guests in Nanochannels of Zeolite L

Cited by 6 publications

References 204 publications

Theoretical FRET Efficiency of an Antenna Material Containing Natural Dyes and Zeolite L

Theoretical FRET Efficiency of an Antenna Material Containing Natural Dyes and Zeolite L

Fluorescent Nanozeolite Receptors for the Highly Selective and Sensitive Detection of Neurotransmitters in Water and Biofluids

Sealing of Zeolite L Channels with Ethoxysilanes: Influence of Molecular Structure and Thermal Treatment

Contact Info

Product

Resources

About