Discovering of the L ligand impact on luminescence enhancement of Eu(Dibenzoylmethane)3.Lx complexes employing transient absorption spectroscopy
The effect of luminescent enhancement under exchange of the auxiliary ligand in Europium(III) tris(1,3-diphenyl-1,3-propanedionato) monohydrate was investigated by steady-state and time-resolved transient absorption spectroscopy. The excited state relaxation dynamics of this complex was analyzed thr...
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| creator | Stanimirov, Stanislav S Trifonov, Anton A Buchvarov, Ivan C |
| description | The effect of luminescent enhancement under exchange of the auxiliary ligand in Europium(III) tris(1,3-diphenyl-1,3-propanedionato) monohydrate was investigated by steady-state and time-resolved transient absorption spectroscopy. The excited state relaxation dynamics of this complex was analyzed through a comparison of the experimental data obtained for several model compounds, namely Eu(DBM)3.NH3, Eu(DBM)3.EDA, Eu(DBM)3.Phen, Al(DBM)3 and dibenzoyl methane (DBM) in various solutions and polymer matrices. The results show there is no linear relationship between enhancement of the emission quantum yield and the luminescent lifetime, which suggests that the auxiliary ligand reduces the rate of nonradiative relaxation of the lanthanide ion, but also affects the excited state energy transfer from ligand to metal ion. Transient absorption data shows a clear correlation between the efficiency of the energy transfer and the degree of triplet state population expressed by an amplification of the signal for its excited state absorption band on going from Eu(DBM)3.H2O to the Eu(DBM).L complex. The results show that this auxiliary ligand exchange acts as a switch turning the intersystem crossing on or off as a competitive pathway for excited state relaxation of the europium(III) complexes. |
| doi_str_mv | 10.48550/arxiv.2112.06972 |
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The excited state relaxation dynamics of this complex was analyzed through a comparison of the experimental data obtained for several model compounds, namely Eu(DBM)3.NH3, Eu(DBM)3.EDA, Eu(DBM)3.Phen, Al(DBM)3 and dibenzoyl methane (DBM) in various solutions and polymer matrices. The results show there is no linear relationship between enhancement of the emission quantum yield and the luminescent lifetime, which suggests that the auxiliary ligand reduces the rate of nonradiative relaxation of the lanthanide ion, but also affects the excited state energy transfer from ligand to metal ion. Transient absorption data shows a clear correlation between the efficiency of the energy transfer and the degree of triplet state population expressed by an amplification of the signal for its excited state absorption band on going from Eu(DBM)3.H2O to the Eu(DBM).L complex. The results show that this auxiliary ligand exchange acts as a switch turning the intersystem crossing on or off as a competitive pathway for excited state relaxation of the europium(III) complexes.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.2112.06972</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Absorption spectra ; Absorption spectroscopy ; Ammonia ; Atomic energy levels ; Energy transfer ; Europium ; Excitation ; Excitation spectra ; Ligands ; Physics - Chemical Physics ; Spectrum analysis</subject><ispartof>arXiv.org, 2021-12</ispartof><rights>2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). 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The excited state relaxation dynamics of this complex was analyzed through a comparison of the experimental data obtained for several model compounds, namely Eu(DBM)3.NH3, Eu(DBM)3.EDA, Eu(DBM)3.Phen, Al(DBM)3 and dibenzoyl methane (DBM) in various solutions and polymer matrices. The results show there is no linear relationship between enhancement of the emission quantum yield and the luminescent lifetime, which suggests that the auxiliary ligand reduces the rate of nonradiative relaxation of the lanthanide ion, but also affects the excited state energy transfer from ligand to metal ion. Transient absorption data shows a clear correlation between the efficiency of the energy transfer and the degree of triplet state population expressed by an amplification of the signal for its excited state absorption band on going from Eu(DBM)3.H2O to the Eu(DBM).L complex. The results show that this auxiliary ligand exchange acts as a switch turning the intersystem crossing on or off as a competitive pathway for excited state relaxation of the europium(III) complexes.</description><subject>Absorption spectra</subject><subject>Absorption spectroscopy</subject><subject>Ammonia</subject><subject>Atomic energy levels</subject><subject>Energy transfer</subject><subject>Europium</subject><subject>Excitation</subject><subject>Excitation spectra</subject><subject>Ligands</subject><subject>Physics - Chemical Physics</subject><subject>Spectrum analysis</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><sourceid>GOX</sourceid><recordid>eNotUMlOwzAUtJCQqEo_gBOWuMAhwUuc5YjaskiROMA9st2X1lViBzutGr6CTyYpnGakNzNvNAjdUBInuRDkUfqTOcaMUhaTtMjYBZoxzmmUJ4xdoUUIe0IISzMmBJ-hn5UJ2h3BG7vFrsb9DnCJG7OVdoNN20ndY2dxc2iNhaDBasBgd3LEFmw_WdaH-5VRYL_d0LTQjzd44HF5wtq1XQMnCBhG4obpRe-lDWZyShWc73ozpocOdO_dWKQbrtFlLZsAi3-co4_n9efyNSrfX96WT2UkBRNRyhUQlXGRcilVLXNeJzTf8FwVOi82rAAhapGlWhIlE05EQijlkBKSUVCKz9HtX-p5rarzppV-qKbVqvNqo-LuT9F593WA0Fd7d_B2rFSxlBLGE8IF_wVr-3L7</recordid><startdate>20211213</startdate><enddate>20211213</enddate><creator>Stanimirov, Stanislav S</creator><creator>Trifonov, Anton A</creator><creator>Buchvarov, Ivan C</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20211213</creationdate><title>Discovering of the L ligand impact on luminescence enhancement of Eu(Dibenzoylmethane)3.Lx complexes employing transient absorption spectroscopy</title><author>Stanimirov, Stanislav S ; Trifonov, Anton A ; Buchvarov, Ivan C</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a525-63be0b73563aabfa83f418d38b9c89d29e55f576ca0ba430540113e60071ebb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Absorption spectra</topic><topic>Absorption spectroscopy</topic><topic>Ammonia</topic><topic>Atomic energy levels</topic><topic>Energy transfer</topic><topic>Europium</topic><topic>Excitation</topic><topic>Excitation spectra</topic><topic>Ligands</topic><topic>Physics - Chemical Physics</topic><topic>Spectrum analysis</topic><toplevel>online_resources</toplevel><creatorcontrib>Stanimirov, Stanislav S</creatorcontrib><creatorcontrib>Trifonov, Anton A</creatorcontrib><creatorcontrib>Buchvarov, Ivan C</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>arXiv.org</collection><jtitle>arXiv.org</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Stanimirov, Stanislav S</au><au>Trifonov, Anton A</au><au>Buchvarov, Ivan C</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Discovering of the L ligand impact on luminescence enhancement of Eu(Dibenzoylmethane)3.Lx complexes employing transient absorption spectroscopy</atitle><jtitle>arXiv.org</jtitle><date>2021-12-13</date><risdate>2021</risdate><eissn>2331-8422</eissn><abstract>The effect of luminescent enhancement under exchange of the auxiliary ligand in Europium(III) tris(1,3-diphenyl-1,3-propanedionato) monohydrate was investigated by steady-state and time-resolved transient absorption spectroscopy. The excited state relaxation dynamics of this complex was analyzed through a comparison of the experimental data obtained for several model compounds, namely Eu(DBM)3.NH3, Eu(DBM)3.EDA, Eu(DBM)3.Phen, Al(DBM)3 and dibenzoyl methane (DBM) in various solutions and polymer matrices. The results show there is no linear relationship between enhancement of the emission quantum yield and the luminescent lifetime, which suggests that the auxiliary ligand reduces the rate of nonradiative relaxation of the lanthanide ion, but also affects the excited state energy transfer from ligand to metal ion. Transient absorption data shows a clear correlation between the efficiency of the energy transfer and the degree of triplet state population expressed by an amplification of the signal for its excited state absorption band on going from Eu(DBM)3.H2O to the Eu(DBM).L complex. The results show that this auxiliary ligand exchange acts as a switch turning the intersystem crossing on or off as a competitive pathway for excited state relaxation of the europium(III) complexes.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.2112.06972</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Absorption spectra Absorption spectroscopy Ammonia Atomic energy levels Energy transfer Europium Excitation Excitation spectra Ligands Physics - Chemical Physics Spectrum analysis |
| title | Discovering of the L ligand impact on luminescence enhancement of Eu(Dibenzoylmethane)3.Lx complexes employing transient absorption spectroscopy |
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