Photoluminescence and Resonance Energy Transfer in Zeolites

Strome, David H.; Klier, K.

doi:10.1016/s0167-2991(08)64909-5

Cited by 3 publications

(17 citation statements)

References 14 publications

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“…Thus the pertubance of emission decay due to an overlap of individual luminescence bands can be excluded. The e †ect of the shortening of the decay time of the Cu`emission in Y-zeolite by resonance energy transfer was described by Strome and Klier.36,38,52 According to eqn. (3), and experimental results from ref.…”

Section: Resultsmentioning

confidence: 99%

Geometry of the Cu+ 540 nm luminescence centres in zeolites

Dědeček¹,

Wichterlová²

1999

Phys. Chem. Chem. Phys.

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Section: Resultsmentioning

confidence: 99%

Geometry of the Cu+ 540 nm luminescence centres in zeolites

Dědeček¹,

Wichterlová²

1999

Phys. Chem. Chem. Phys.

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“… 14 The luminescence quenching by charge transfer from the cation to the ligand (point (ii)) is well known for metallozeolites and was observed also for Zn(II) ions in the ferrierite. 12 However, this mechanism of luminescence quenching can be excluded in the fully dehydrated Zn-zeolites and would be reflected in significantly more pronounced luminescence quenching (very short decay times of approximately 10 μs for Zn-ferrierite with guest molecules). 14 Luminescence quenching of bare TMI in extra-framework cationic sites of the zeolite by resonance energy transfer (point (iii)) was investigated in the case of zeolite matrices for Cu(I) ions as emission centers and Co(II) and Ni(II), Co(II), and Mn(II) ions as quenchers located in the matrix of the Y-zeolite.…”

Section: Resultsmentioning

confidence: 99%

“… 12 , 24 , 25 Due to the isoelectronic nature of the Cu(I) and Zn(II) ions, they exhibit quite similar luminescence properties, as was shown in luminescence/emission studies on Cu(I) and Zn(II) containing silicon-rich zeolites (emission bands at 540, 480, and 450 nm for Cu(I) and 540, 480, and 425 nm for Zn(II) and luminescence decays ranging from 120–35 and 135–55 for Cu(I) and Zn(II), respectively). 14 , 26 Therefore, conclusions for Cu(I) can be transferable also to Zn(II) luminescence/quenching in the presence of Co(II) (detailed discussion of the application of Förster–Dexter theory to the quenching of metal ion luminescence in zeolites, see ref ( 12 )).…”

Section: Resultsmentioning

confidence: 99%

“…Qualitative and quantitative analysis of zinc in the studied samples was performed according to the studies presented elsewhere. 12 …”

Section: Methodsmentioning

confidence: 99%

“… 1 It was shown that the bare cations of Fe, Ni, Mn, and Co embedded in zeolitic matrices (CHA, ZSM-5, or FER) can stabilize active oxygen forms originating from the splitting of N 2 O or O 2 . 2 − 12 This active oxygen form called α-oxygen ([M 2+ = O 2– ] 2+ ) exhibited high oxidation properties toward the transformation of methane to methanol or benzene to phenol. 2 , 5 , 6 The employment of O 2 as a cheap and eco-friendly oxidant of hydrocarbons attracts great attention from both scientific and industrial communities.…”

Section: Introductionmentioning

confidence: 99%

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Organization of Cooperating Aluminum Pairs in Ferrierite Evidenced by Luminescence Quenching

et al. 2023

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We show that four cooperating Al atoms located at the two neighboring six-membered (6-MR) rings in the ferrierite framework can be readily discerned by luminescence studies. Thus, luminescent Zn(II) cations accommodated by one aluminum pair of the 6-MR ring can be effectively quenched by neighboring Co(II) ions stabilized by the second ring. Quenching occurs via the energy transfer mechanism and allows estimation of the critical radius of Zn(II)–Co(II) interactions. This points to the appropriate geometry and distance of the transition metal ions accommodated within zeolite, providing direct evidence of the four-aluminum atom arrangement in the ferrierite framework.

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In-Situ XAFS, Photoluminescence, and IR Investigations of Copper Ions Included within Various Kinds of Zeolites. Structure of Cu(I) Ions and Their Interaction with CO Molecules

et al. 1996

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The characterization of the coordination geometry of copper ions included within zeolites has been carried out with a combination of in-situ XAFS, photoluminescence, and IR measurements in order to obtain a detailed description of the formation of isolated Cu+ monomers with planar 3-coordinate or linear 2-coordinate geometry in the zeolite channels by thermal treatment under vacuum. The Cu+ ions within the zeolites were found to exist as isolated Cu+ monomers and (Cu+−Cu+) dimers, their relative concentrations strongly depending on the type of zeolite used. With ZSM-5 and mordenite zeolites, most of the copper cations were found to exist as isolated Cu+ monomers, in contrast to the case of the Y-zeolite. CO molecules were adsorbed selectively only on isolated Cu+ monomers, distorting the coordination geometry to form stable one-on-one Cu+−CO complexes.

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Photoluminescence and Resonance Energy Transfer in Zeolites

Cited by 3 publications

References 14 publications

Geometry of the Cu+ 540 nm luminescence centres in zeolites

Geometry of the Cu+ 540 nm luminescence centres in zeolites

Organization of Cooperating Aluminum Pairs in Ferrierite Evidenced by Luminescence Quenching

In-Situ XAFS, Photoluminescence, and IR Investigations of Copper Ions Included within Various Kinds of Zeolites. Structure of Cu(I) Ions and Their Interaction with CO Molecules

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