Europium-Based Metal−Organic Framework as a Photocatalyst for the One-Electron Oxidation of Organic Compounds
Lanthanide-based metal−organic frameworks (Ln-MOFs) are fascinating because of their versatile coordination geometry, unique luminescent and magnetic properties, and possible high framework stability to water. We synthesized nanosized europium-based MOF (Eu-MOF) particles and investigated the photoi...
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| Veröffentlicht in: | Langmuir 2010-07, Vol.26 (13), p.10437-10443 |
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| creator | Choi, Jun Rye Tachikawa, Takashi Fujitsuka, Mamoru Majima, Tetsuro |
| description | Lanthanide-based metal−organic frameworks (Ln-MOFs) are fascinating because of their versatile coordination geometry, unique luminescent and magnetic properties, and possible high framework stability to water. We synthesized nanosized europium-based MOF (Eu-MOF) particles and investigated the photoinduced electron transfer between the excited Eu-MOF nanoparticles and various organic compounds, such as aromatic sulfides and amines. From the time-resolved emission measurements, the bimolecular quenching rate constants of luminescence from the Eu3+ ions in the MOF framework by electron donors were determined and explained in terms of the Marcus theory of electron-transfer reactions. Furthermore, spatially resolved emission quenching images obtained by confocal fluorescence microscopy revealed that small (large) quencher molecules quickly (slowly) and homogeneously (inhomogeneously) penetrate microsized Eu-MOF crystals. These observations led us confidently to assume the possibility that Eu-MOFs work as a size-selective photocatalyst for the one-electron oxidation of organic compounds. |
| doi_str_mv | 10.1021/la101770h |
| format | Article |
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We synthesized nanosized europium-based MOF (Eu-MOF) particles and investigated the photoinduced electron transfer between the excited Eu-MOF nanoparticles and various organic compounds, such as aromatic sulfides and amines. From the time-resolved emission measurements, the bimolecular quenching rate constants of luminescence from the Eu3+ ions in the MOF framework by electron donors were determined and explained in terms of the Marcus theory of electron-transfer reactions. Furthermore, spatially resolved emission quenching images obtained by confocal fluorescence microscopy revealed that small (large) quencher molecules quickly (slowly) and homogeneously (inhomogeneously) penetrate microsized Eu-MOF crystals. These observations led us confidently to assume the possibility that Eu-MOFs work as a size-selective photocatalyst for the one-electron oxidation of organic compounds.</description><identifier>ISSN: 0743-7463</identifier><identifier>EISSN: 1520-5827</identifier><identifier>DOI: 10.1021/la101770h</identifier><identifier>PMID: 20515053</identifier><identifier>CODEN: LANGD5</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Catalysis ; Chemistry ; Colloidal state and disperse state ; Europium - chemistry ; Exact sciences and technology ; General and physical chemistry ; Models, Theoretical ; Nanoparticles - chemistry ; Nanotechnology ; Organic Chemicals - chemistry ; Oxidation-Reduction ; Photochemistry ; Photochemistry - methods ; Physical and chemical studies. Granulometry. 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We synthesized nanosized europium-based MOF (Eu-MOF) particles and investigated the photoinduced electron transfer between the excited Eu-MOF nanoparticles and various organic compounds, such as aromatic sulfides and amines. From the time-resolved emission measurements, the bimolecular quenching rate constants of luminescence from the Eu3+ ions in the MOF framework by electron donors were determined and explained in terms of the Marcus theory of electron-transfer reactions. Furthermore, spatially resolved emission quenching images obtained by confocal fluorescence microscopy revealed that small (large) quencher molecules quickly (slowly) and homogeneously (inhomogeneously) penetrate microsized Eu-MOF crystals. These observations led us confidently to assume the possibility that Eu-MOFs work as a size-selective photocatalyst for the one-electron oxidation of organic compounds.</description><subject>Catalysis</subject><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>Europium - chemistry</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Models, Theoretical</subject><subject>Nanoparticles - chemistry</subject><subject>Nanotechnology</subject><subject>Organic Chemicals - chemistry</subject><subject>Oxidation-Reduction</subject><subject>Photochemistry</subject><subject>Photochemistry - methods</subject><subject>Physical and chemical studies. Granulometry. Electrokinetic phenomena</subject><subject>Physical chemistry of induced reactions (with radiations, particles and ultrasonics)</subject><issn>0743-7463</issn><issn>1520-5827</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpt0LtOwzAYhmELgaAUBm4AeUGIIfD7FLcjVOUgFZUB5uiPY9NAEhc7EXAHzFwiV0IQBRYmW_Kjz9JLyB6DYwacnVTIgGkNizUyYIpDokZcr5MBaCkSLVOxRbZjfACAsZDjTbLFQTEFSgyIn3bBL8uuTs4w2oJe2xarj7f3ebjHpjT0PGBtn314pBgp0puFb73B3rzGljofaLuwdN7YZFpZ0wbf0PlLWWBb9jfv6M_MxNdL3zVF3CEbDqtod1fnkNydT28nl8lsfnE1OZ0lKBm0CVpIYZRLXRg00imHKeb9U-FyN7KSM-F4qnNpDBdcaZZbkYMEVKkonMqFGJLD791l8E-djW1Wl9HYqsLG-i5mWggFfYNxL4--pQk-xmBdtgxljeE1Y5B95c1-8_Z2f7Xa5bUtfuVPzx4crABGg5UL2Jgy_jk-1kIK9efQxOzBd6HpY_zz4ScWbpAU</recordid><startdate>20100706</startdate><enddate>20100706</enddate><creator>Choi, Jun Rye</creator><creator>Tachikawa, Takashi</creator><creator>Fujitsuka, Mamoru</creator><creator>Majima, Tetsuro</creator><general>American Chemical Society</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20100706</creationdate><title>Europium-Based Metal−Organic Framework as a Photocatalyst for the One-Electron Oxidation of Organic Compounds</title><author>Choi, Jun Rye ; Tachikawa, Takashi ; Fujitsuka, Mamoru ; Majima, Tetsuro</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a410t-ae0608b47dcac4f5fa6aba41dfbf8e4213f267b4cc232571be3b040a563df5b33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Catalysis</topic><topic>Chemistry</topic><topic>Colloidal state and disperse state</topic><topic>Europium - chemistry</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Models, Theoretical</topic><topic>Nanoparticles - chemistry</topic><topic>Nanotechnology</topic><topic>Organic Chemicals - chemistry</topic><topic>Oxidation-Reduction</topic><topic>Photochemistry</topic><topic>Photochemistry - methods</topic><topic>Physical and chemical studies. Granulometry. Electrokinetic phenomena</topic><topic>Physical chemistry of induced reactions (with radiations, particles and ultrasonics)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Choi, Jun Rye</creatorcontrib><creatorcontrib>Tachikawa, Takashi</creatorcontrib><creatorcontrib>Fujitsuka, Mamoru</creatorcontrib><creatorcontrib>Majima, Tetsuro</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Langmuir</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Choi, Jun Rye</au><au>Tachikawa, Takashi</au><au>Fujitsuka, Mamoru</au><au>Majima, Tetsuro</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Europium-Based Metal−Organic Framework as a Photocatalyst for the One-Electron Oxidation of Organic Compounds</atitle><jtitle>Langmuir</jtitle><addtitle>Langmuir</addtitle><date>2010-07-06</date><risdate>2010</risdate><volume>26</volume><issue>13</issue><spage>10437</spage><epage>10443</epage><pages>10437-10443</pages><issn>0743-7463</issn><eissn>1520-5827</eissn><coden>LANGD5</coden><abstract>Lanthanide-based metal−organic frameworks (Ln-MOFs) are fascinating because of their versatile coordination geometry, unique luminescent and magnetic properties, and possible high framework stability to water. We synthesized nanosized europium-based MOF (Eu-MOF) particles and investigated the photoinduced electron transfer between the excited Eu-MOF nanoparticles and various organic compounds, such as aromatic sulfides and amines. From the time-resolved emission measurements, the bimolecular quenching rate constants of luminescence from the Eu3+ ions in the MOF framework by electron donors were determined and explained in terms of the Marcus theory of electron-transfer reactions. Furthermore, spatially resolved emission quenching images obtained by confocal fluorescence microscopy revealed that small (large) quencher molecules quickly (slowly) and homogeneously (inhomogeneously) penetrate microsized Eu-MOF crystals. These observations led us confidently to assume the possibility that Eu-MOFs work as a size-selective photocatalyst for the one-electron oxidation of organic compounds.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>20515053</pmid><doi>10.1021/la101770h</doi><tpages>7</tpages></addata></record> |
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| subjects | Catalysis Chemistry Colloidal state and disperse state Europium - chemistry Exact sciences and technology General and physical chemistry Models, Theoretical Nanoparticles - chemistry Nanotechnology Organic Chemicals - chemistry Oxidation-Reduction Photochemistry Photochemistry - methods Physical and chemical studies. Granulometry. Electrokinetic phenomena Physical chemistry of induced reactions (with radiations, particles and ultrasonics) |
| title | Europium-Based Metal−Organic Framework as a Photocatalyst for the One-Electron Oxidation of Organic Compounds |
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