Multi step energy transfer between three Si_LTL and SiGe_LTL zeolite-loaded dyes

Doungmanee, Suriya; Siritanon, Theeranun; Insuwan, Wilaiporn; Jungsuttiwong, Siriporn; Rangsriwatananon, Kunwadee

doi:10.1007/s10934-017-0550-7

Cited by 8 publications

(5 citation statements)

References 22 publications

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“…Chromophores bearing a positive charge – from the simplest ones like thionine,,,,, xanthene dyes,,,,,,„ acridine (and derivatives),,,,, to more complex molecules like methylviologen or BODIPY‐dyes,,, – are naturally prone to be incorporated by a zeolite via straightforward ion exchange, a practice which is also used for dye incorporation into anionic MOF nanochannels ,. As a consequence, cationic dyes are very popular as luminescent guests, and their encapsulation has been widely documented by experimental, theoretical, or combined investigations.…”

Section: Organization Of Complex Species In 1dmentioning

confidence: 99%

Supramolecular Organization in Confined Nanospaces

Tabacchi

2018

ChemPhysChem

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Empty spaces are abhorred by nature, which immediately rushes in to fill the void. Humans have learnt pretty well how to make ordered empty nanocontainers, and to get useful products out of them. When such an order is imparted to molecules, new properties may appear, often yielding advanced applications. This review illustrates how the organized void space inherently present in various materials: zeolites, clathrates, mesoporous silica/organosilica, and metal organic frameworks (MOF), for example, can be exploited to create confined, organized, and self-assembled supramolecular structures of low dimensionality. Features of the confining matrices relevant to organization are presented with special focus on molecular-level aspects. Selected examples of confined supramolecular assemblies - from small molecules to quantum dots or luminescent species - are aimed to show the complexity and potential of this approach. Natural confinement (minerals) and hyperconfinement (high pressure) provide further opportunities to understand and master the atomistic-level interactions governing supramolecular organization under nanospace restrictions.

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Section: Organization Of Complex Species In 1dmentioning

confidence: 99%

Supramolecular Organization in Confined Nanospaces

Tabacchi

2018

ChemPhysChem

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“…In contrast, the implementation of zeolite L hybrids (framework type: LTL) [72] has already accomplished prac-tical application in strategic areas such as solar energy harvesting, [5], [73], [74], [75], [76], [77], [78], [79] photonics, [80], [81], [82] and nano-medical technology. [19], [83], [84], [85] The fabrication of confined architectures of chromophores for photon transport [5], [9], [57], [86], [87], [88] and other light-operated systems [17], [19], [89] has made impressive progresses in the last few years. On the other hand, it is still to clarify how the microscopic interactions within the cages govern the peculiar behavior of guest species, and thus the commercially useful features of zeolite L devices.…”

Section: Introductionmentioning

confidence: 99%

Water in zeolite L and its MOF mimic

Fois

Tabacchi

2019

Zeitschrift Für Kristallographie - Crystalline Materials

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Confinement of molecules in one dimensional arrays of channel-shaped cavities has led to technologically interesting materials. However, the interactions governing the supramolecular aggregates still remain obscure, even for the most common guest molecule: water. Herein, we use computational chemistry methods (#compchem) to study the water organization inside two different channel-type environments: zeolite L – a widely used matrix for inclusion of dye molecules, and ZLMOF – the closest metal-organic-framework mimic of zeolite L. In ZLMOF, the methyl groups of the ligands protrude inside the channels, creating nearly isolated nanocavities. These cavities host well-separated ring-shaped clusters of water molecules, dominated mainly by water-water hydrogen bonds. ZLMOF provides arrays of “isolated supramolecule” environments, which might be exploited for the individual confinement of small species with interesting optical or catalytic properties. In contrast, the one dimensional channels of zeolite L contain a continuous supramolecular structure, governed by the water interactions with potassium cations and by water-water hydrogen bonds. Water imparts a significant energetic stabilization to both materials, which increases with the water content in ZLMOF and follows the opposite trend in zeolite L. The water network in zeolite L contains an intriguing hypercoordinated structure, where a water molecule is surrounded by five strong hydrogen bonds. Such a structure, here described for the first time in zeolites, can be considered as a water pre-dissociation complex and might explain the experimentally detected high proton activity in zeolite L nanochannels.

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“…Because of the explosion in computing power of the past decade, structural investigations on zeolite adducts based essentially on modeling/simulation studiesoften aided by UV–vis spectroscopy experimentshave flourished in the recent past − so that an extensive literature is available, including important reviews . Besides providing structural information on the bulk material, simulations also allow to study phenomena taking place at the zeolite pore entrances, , which are of topic relevance in the self-assembly of dye–zeolite adducts.…”

Section: Introductionmentioning

confidence: 99%

Structure and Host–Guest Interactions of Perylene–Diimide Dyes in Zeolite L Nanochannels

et al. 2018

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Confinement-driven self-assembly of dyes in nanomatrices is an effective route for the production of hybrid supramolecular structures of high technological relevance, among which the archetypal zeolite L based systems are exploited in Forster resonance energy transfer (FRET) sensitized solar cells, luminescent solar concentrators, and color-changing media but also in sensing in analytical chemistry, biology, and diagnostics. Despite this progress in applications, the organization of confined chromophores in zeolite L materials remains elusive. Herein, by integrating experiments with different time scale and radiation source (IR, XRPD, total scattering) with first-principles DFT modeling, we attained a microscopically detailed picture of a technologically important hybrid composite of zeolite L with a perylene−diimide (also known as perylene−bisimide) dye at both hydrated and anhydrous conditions. The asymmetric positioning of the dye in the zeolite channel is determined by two factors: shapevolume constraints, and relative strength of competitive interactions among confined species. Our multitechnique experimental-theoretical approach thoroughly described the supramolecular chemistry of this hybrid material, identifiying possible strategies to further enhance FRET efficiency and improve functionality. This work deepens the understanding of host−guest interactions in dye−zeolite L composites, a key requirement to master the finely tuned mechanisms governing supramolecular organization in confined nanospaces.

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Multi step energy transfer between three Si_LTL and SiGe_LTL zeolite-loaded dyes

Cited by 8 publications

References 22 publications

Supramolecular Organization in Confined Nanospaces

Supramolecular Organization in Confined Nanospaces

Water in zeolite L and its MOF mimic

Structure and Host–Guest Interactions of Perylene–Diimide Dyes in Zeolite L Nanochannels

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