Improved quantum yield in geometrically constrained tetraphenylethylene-based metal–organic frameworks

Stawiasz, Katherine J.; Deneff, Jacob I.; Reyes, Raphael A.; Woods, Toby J.; Shea-Rohwer, Lauren E.; Valdez, Nichole R.; Rodriguez, Mark A.; Lawal, Abdul Afeez; Moore, Jeffrey S.; Gallis, Dorina F. Sava

doi:10.1039/d3ce00228d

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2024

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Cited by 3 publications

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“…A tetraphenylethylene (TPE) scaffold was selected as a linker due to the high quantum yield of TPE-based MOFs, with different nodes such as Eu 3+ , Zn 2+ , Cd 2+ , and Gd 3+ . 36–39…”

mentioning

confidence: 99%

Stable and efficient rare-earth free phosphors based on an Mg(ii) metal–organic framework for hybrid light-emitting diodes

Atoini,

Cavinato,

Schmitt

et al. 2024

Dalton Trans.

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“…A tetraphenylethylene (TPE) scaffold was selected as a linker due to the high quantum yield of TPE-based MOFs, with different nodes such as Eu 3+ , Zn 2+ , Cd 2+ , and Gd 3+ . 36–39…”

mentioning

confidence: 99%

Stable and efficient rare-earth free phosphors based on an Mg(ii) metal–organic framework for hybrid light-emitting diodes

Atoini,

Cavinato,

Schmitt

et al. 2024

Dalton Trans.

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Insights into a New Multi‐Stimuli‐Responsive Photochromic Metal‐Organic Framework: Highly Sensitive Turn‐On Luminescence in a Lanthanum Phosphonate

Steinke,

Bette,

Ruser

et al. 2024

Adv Funct Materials

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The new microporous metal organic framework [La2(H2O)5(H2TPPE)]·3H2O (CAU‐54), is obtained in a hydrothermal reaction of the linker 1,1,2,2‐tetrakis(4′‐phosphonophenyl)ethylene (H8TPPE) and La3+ ions. The extensive characterization including temperature‐dependent crystal structures and spectroscopic properties allowed to understand the unique, multi‐responsive material properties. CAU‐54 exhibits rarely observed reversible photochromism as well as turn‐on photoluminescence by various external chemical or physical stimuli including change of pressure, solvent exchange, and temperature variation. These properties can be unequivocally assigned to the presence of tetraphenylethylene (TPE) moieties of the linker molecules within the MOF, i.e., the ordered spatial arrangement of the linker molecules, the presence of accessible pores as well as the coordination flexibility of the phosphonate groups and the rotational freedom of the linker. By temperature‐dependent steady‐state and time‐resolved luminescence studies, it is shown that this compound exhibits a) blue fluorescence that becomes effectively quenched at room temperature, b) green efficient luminescence with thermal stability up to 400 K, and c) red phosphorescence correlated to the observed photochromism. In addition, CAU‐54 shows unusual thermal expansion properties as shown by temperature‐dependent powder X‐ray diffraction measurements with identified transition points that correlate with the observed temperature‐dependent changes in the photoluminescence.

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Antioxidant Activity of Metal-Organic Frameworks

Farasati Far

2024

ACS Symposium Series

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Improved quantum yield in geometrically constrained tetraphenylethylene-based metal–organic frameworks

Abstract: Herein, we report the synthesis of a novel, tetraphenylethylene-based ligand for metal-organic frameworks (MOFs). Incorporation of this ligand into a Zn- or Eu-based MOF increased the quantum yield (QY) by...

Cited by 3 publications

References 31 publications

Stable and efficient rare-earth free phosphors based on an Mg(ii) metal–organic framework for hybrid light-emitting diodes

Stable and efficient rare-earth free phosphors based on an Mg(ii) metal–organic framework for hybrid light-emitting diodes

Insights into a New Multi‐Stimuli‐Responsive Photochromic Metal‐Organic Framework: Highly Sensitive Turn‐On Luminescence in a Lanthanum Phosphonate

Antioxidant Activity of Metal-Organic Frameworks

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