Orthogonally Bifunctional Fluorescent Zeolite‐L Microcrystals

Busby, Michael; Kerschbaumer, Hannes; Calzaferri, Gion; Cola, Luisa De

doi:10.1002/adma.200702354

Cited by 70 publications

(57 citation statements)

References 32 publications

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“…d Organization of zeolite L crystals. Oriented monolayers of either standing or lying zeolite L crystals on a substrate and chains of crystals linked by the interaction between the stopcocks located at the channel entrances [4], [6], [42] The second stage of organization is represented by the coupling of an external acceptor or donor stopcock fluorophore at the ends of the zeolite L channels, which can then trap or inject electronic excitation energy [4], [45,46], [48,49]. The third stage of organization is obtained by interfacing the material to an external device via a stopcock intermediate; see Fig.…”

Section: Artificial Antenna Systemsmentioning

confidence: 99%

Artificial Photosynthesis

Calzaferri

2009

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One-dimensional channel materials, such as zeolites and mesoporous silicas, are very attractive hosts for the preparation and investigation of hierarchically organized structures, presenting a successive ordering from the molecular up to macroscopic scale. The focus of this article is on artificial photonic antenna systems and on photocatalytically active layers that have been built by incorporating organic dyes, complexes, metal cations and clusters into 1-D nanochannel materials. We show that zeolite L as a host material allows for the design and preparation of a large variety of highly organized hostguest systems. The combination of a tuneable host morphology and the possibility of obtaining highly organized molecular patterns of guests leads to a variety of potential optical and photoelectronic applications. Strongly absorbing systems exhibiting efficient FRET along the c-axis of the zeolite crystals are accessible by sequential inclusion of multiple types of dyes. These new light-harvesting materials offer unique possibilities as building blocks for solarenergy conversion devices. A complementary approach consists in integrating photochemically active substances into zeolite monolayers coated on an electrode and taking advantage of intrazeolite processes for designing a reversible electrode for photocatalytic water oxidation. The photoelectrochemical water splitting capability of systems based on Ag ? /AgCl/Ag n -zeolite photoanodes are discussed.

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Section: Artificial Antenna Systemsmentioning

confidence: 99%

Artificial Photosynthesis

Calzaferri

2009

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“…[15] Bezüglich der räumlichen Auflösung ist die IR-Mikroskopie der OM wellenlängenbedingt zwar unterlegen (typischerweise 20 20 mm 2 ), doch weil Synchrotronstrahlung um 100-bis 1000-mal intensiver ist als Strahlung aus üblichen IR-Lichtquellen, wird eine räumliche Auflösung nahe der Beugungsgrenze erzielt (gewöhnlich unter 5 [17][18][19] Alles in allem sieht die Zeolithforschung einer prächtigen Zukunft entgegen.…”

Section: Reaktionskinetikunclassified

Zeolithkristalle: Morphologie und Katalyse

Schoonheydt

2008

Angewandte Chemie

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“…Besides some applications in heterogeneous catalysis [2][3][4], the 1D topology of its channel system (which displays an ordered array of parallel tubular channels) renders the zeolite K-L an ideal host for M a n u s c r i p t 3 investigating a wide range of phenomena displayed by encapsulated molecules. Among them, single-chain conjugated (conducting) polymers isolated in a dielectric matrix [5], oriented fluorescent dyes [6,7], photochemistry [8,9] and photonic crystals [10], as well as the combined effect of adsorption enthalpy and entropy in the diffusion dynamics of adsorbed molecules [11].…”

Section: Introductionmentioning

confidence: 99%