Playing with dye molecules at the inner and outer surface of zeolite L

Calzaferri, Gion; Brühwiler, Dominik; Megelski, Silke; Pfenniger, Michel; Pauchard, Marc; Hennessy, Brian; Maas, Huub; Devaux, A.; Graf, U.

doi:10.1016/s1293-2558(00)00129-1

Cited by 98 publications

(85 citation statements)

References 16 publications

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“…The channel entrance adsorption of ZnPc 2 is straightforward, as it employs the well-established ion exchange properties of ZL. [20] The NCS group of ZnPc 3 allows its binding to 3-aminopropyldimethylmethoxysilane (APDMMS) through the formation of a thiourea. It has been shown that such methoxysilylated stopcocks can react with the ZL framework.…”

Section: Resultsmentioning

confidence: 99%

“…Insertion into ZL by ion exchange, aggregate formation at the external surface of ZL, and the www.chemeurj.org absorption spectra of the thionine-ZL systems have been studied in detail. [20,22] Thionine can therefore be regarded as a sensitive probe that is well suited for this study, as the focus is on comparing various stopcock binding schemes and not on maximizing luminescence properties. To increase the number of channel entrances, and therefore the number of adsorption sites for stopcocks per mass of material, small ZL crystals with an average size of 50 nm were used.…”

Section: Energy-transfer Experimentsmentioning

confidence: 99%

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On the Significance of the Anchoring Group in the Design of Antenna Materials Based on Phthalocyanine Stopcocks and Zeolite L

López‐Duarte

Dieu

Dolamic

et al. 2010

Chemistry A European J

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The synthesis of stopcocks based on zinc phthalocyanine for selective adsorption at the channel entrances of zeolite L is reported. The introduction of either an inert SiMe₃ moiety, an imidazolium cation or a reactive isothiocyanate (NCS) group allows attachment to the channel entrances of zeolite L through van der Waals interactions, electrostatic interactions, or covalent binding, respectively. Stopcocks that rely on van-der-Waals-driven adsorption require careful selection of the solvent used for the deposition onto the zeolite surface to avoid a nonspecific distribution of the molecules. Regarding the design of photonic antenna systems, a stopcock with a cationic tail was found to be the most convenient, based on the observation that efficient energy transfer from molecules located in the zeolite nanochannels is more readily obtained than in the other cases.

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Section: Resultsmentioning

confidence: 99%

Section: Energy-transfer Experimentsmentioning

confidence: 99%

On the Significance of the Anchoring Group in the Design of Antenna Materials Based on Phthalocyanine Stopcocks and Zeolite L

López‐Duarte

Dieu

Dolamic

et al. 2010

Chemistry A European J

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“…To our knowledge, a quantitative study of the quantum yield of zeolites infiltrated with different classes of fluorescent dyes is still lacking. In particular, we observe that, even if the encapsulation into zeolite L may contribute to improve the stability of the organic dye (compared to its stability in non-deoxygenate solutions), [11,18] the host-guest interactions can also affect the fluorescence quantum yield. [2] For instance, the latter may strongly depend both on the loading efficiency of the organic dyes and on the physicochemical properties of the surrounding framework, such as its polarity and acidity, or the steric confinement of the dye molecules.…”

Section: Introductionmentioning

confidence: 94%

Quantum Yield Measurement of Fluorescent Zeolite Nanopigments

Nicolet

Huber

Lovey³

et al. 2009

Adv Funct Materials

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Organic fluorescent molecules are infiltrated in the channels of zeolite L nanocrystals, thus creating organic–inorganic fluorescent nanoparticles. Combined with dielectric matrices, these fluorescent nanopigments open the way to the realization of novel optical devices. In this paper, the optical measurement of the quantum yield of fluorescent zeolites by means of a precise and reliable diffuse reflectance technique is presented. Several possible factors that may affect the fluorescence quantum yield are also investigated.

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“…When zeolite L is added to an aqueous solution of thionine, aggregates of the dye immediately form on the external zeolite surface [18]. Upon boiling the sample for about 1 min a sudden colour change from violet to blue is observed.…”

Section: Characterizationmentioning

confidence: 99%

Controlling Size and Morphology of Zeolite L

Ruiz¹,

Brühwiler²,

Dieu³

et al.

Materials Syntheses

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Summary. A convenient synthesis of zeolite L is presented. The size of the crystals can be tuned between 30 and 6000 nm, spanning a volume range of seven orders of magnitude. The zeolite L crystals, which typically feature a cylindrical morphology, are synthesized with various aspect ratios ranging from elongated to disc-shaped. The importance of obtaining zeolite crystals with well-defined size and morphology is discussed in view of potential applications of zeolite L containing organic dye molecules as guests.

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Playing with dye molecules at the inner and outer surface of zeolite L

Cited by 98 publications

References 16 publications

On the Significance of the Anchoring Group in the Design of Antenna Materials Based on Phthalocyanine Stopcocks and Zeolite L

On the Significance of the Anchoring Group in the Design of Antenna Materials Based on Phthalocyanine Stopcocks and Zeolite L

Quantum Yield Measurement of Fluorescent Zeolite Nanopigments

Controlling Size and Morphology of Zeolite L

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