Dual Energy Transfer Pathways from an Antenna Ligand to Lanthanide Ion in Trivalent Europium Complexes with Phosphine-Oxide Bridges

2020 ◽  
Vol 124 (33) ◽  
pp. 6601-6606
Author(s):  
Shiori Miyazaki ◽  
Kiyoshi Miyata ◽  
Haruna Sakamoto ◽  
Fumiya Suzue ◽  
Yuichi Kitagawa ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Phosphine Oxide ◽  
Dual Energy ◽  
Europium Complexes ◽  
Lanthanide Ion ◽  
Trivalent Europium ◽  
Antenna Ligand

Coexistence of Förster and Dexter Energy Transfer Pathways from an Antenna Ligand to Lanthanide Ion in Trivalent Europium Complexes through Phosphine-Oxide Bridges

2020 ◽  
Author(s):  
Shiori Miyazaki ◽  
Kiyoshi Miyata ◽  
Haruna Sakamoto ◽  
Fumiya Suzue ◽  
Yuichi Kitagawa ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Phosphine Oxide ◽  
Electronic Interaction ◽  
Design Strategies ◽  
Time Resolved ◽  
Lanthanide Ion ◽  
Trivalent Europium ◽  
Förster Energy Transfer ◽  
Time Resolved Photoluminescence ◽  
Energy Transfer Pathway

<br>Trivalent europium (Eu3+) complexes are attractive materials for luminescence applications if energy transfer from antenna ligands to the lanthanide ion is efficient. However, the microscopic mechanisms of the transfer remain elusive and fundamental physical chemistry questions still require answers. We track the energy transfer processes in a luminescent complex Eu(hfa)3(DPPTO)2 (hfa: hexafluoroacetylacetonate, DPPTO: 2-diphenylphosphoryltriphenylene) using time-resolved photoluminescence spectroscopy. In addition to the conventional Dexter-type energy transfer pathway through the T1 state of the ligands, we discovered the Forster energy transfer pathway from the S1 of the DPPTO ligands to the 5D1 state of Eu3+ through the weak electronic interaction of a phosphine-oxide bridge. The short timescale of the energy transfer (16 ns, 127 ns) results in its high quantum yield. The coexistence of the distinct energy transfer pathways from a single chromophore is important for establishing design strategies of luminescent complexes. <br>

Coexistence of Förster and Dexter Energy Transfer Pathways from an Antenna Ligand to Lanthanide Ion in Trivalent Europium Complexes through Phosphine-Oxide Bridges

2020 ◽  
Author(s):  
Shiori Miyazaki ◽  
Kiyoshi Miyata ◽  
Haruna Sakamoto ◽  
Fumiya Suzue ◽  
Yuichi Kitagawa ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Phosphine Oxide ◽  
Electronic Interaction ◽  
Design Strategies ◽  
Time Resolved ◽  
Lanthanide Ion ◽  
Trivalent Europium ◽  
Förster Energy Transfer ◽  
Time Resolved Photoluminescence ◽  
Energy Transfer Pathway

<br>Trivalent europium (Eu3+) complexes are attractive materials for luminescence applications if energy transfer from antenna ligands to the lanthanide ion is efficient. However, the microscopic mechanisms of the transfer remain elusive and fundamental physical chemistry questions still require answers. We track the energy transfer processes in a luminescent complex Eu(hfa)3(DPPTO)2 (hfa: hexafluoroacetylacetonate, DPPTO: 2-diphenylphosphoryltriphenylene) using time-resolved photoluminescence spectroscopy. In addition to the conventional Dexter-type energy transfer pathway through the T1 state of the ligands, we discovered the Forster energy transfer pathway from the S1 of the DPPTO ligands to the 5D1 state of Eu3+ through the weak electronic interaction of a phosphine-oxide bridge. The short timescale of the energy transfer (16 ns, 127 ns) results in its high quantum yield. The coexistence of the distinct energy transfer pathways from a single chromophore is important for establishing design strategies of luminescent complexes. <br>

Cooperation in energy transfer between ligands and EuIII ion in molecular europium complexes for vapoluminescence sensor (reversible on/off emission switching) and hybrid white LEDs/Plant-growth applications

2021 ◽  
Author(s):  
R. Marikumar ◽  
Rachna Devi ◽  
Sibani Mund ◽  
Kasturi Singh ◽  
Sivakumar Vaidyanathan
Keyword(s):  
Energy Transfer ◽  
Plant Growth ◽  
Europium Complexes ◽  
Ancillary Ligands ◽  
White Leds

Two ancillary ligands were designed in the aspect of complete energy transfer to Eu(III) ion in the complex. Both the ligands were successfully synthesized and utilized for europium complexation (Eu(TTA)3-phen-fl-mCF3,...

Dual Energy Transfer-Based DNA/Graphene Oxide Nanocomplex Probe for Highly Robust and Accurate Monitoring of Apoptosis-Related microRNAs

2020 ◽  
Vol 92 (17) ◽  
pp. 11565-11572
Author(s):  
Yong Jian Jiang ◽  
Na Wang ◽  
Feng Cheng ◽  
Hua Rong Lin ◽  
Shu Jun Zhen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Energy Transfer ◽  
Dual Energy

Synergy in the energy transfer between ligands and EuIII ions in molecular europium complexes: single-component white light-emitting luminogens

2020 ◽  
Vol 8 (25) ◽  
pp. 8643-8653 ◽  
Author(s):  
Rachna Devi ◽  
Kasturi Singh ◽  
Sivakumar Vaidyanathan
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
White Light ◽  
Lanthanide Complexes ◽  
Solution Process ◽  
Single Component ◽  
Solid State Lighting ◽  
Structural Flexibility ◽  
Europium Complexes ◽  
Light Emitting

Due to their structural flexibility and easy solution process capability, single-component white light-emitting pure organo-lanthanide complexes have been considered as promising candidates for solid-state lighting.

Influence of lanthanide ion energy levels on luminescence of corresponding metalloporphyrins

2017 ◽  
Vol 19 (11) ◽  
pp. 7728-7732 ◽  
Author(s):  
Huimin Zhao ◽  
Lixin Zang ◽  
Chengshan Guo
Keyword(s):  
Energy Transfer ◽  
Energy Levels ◽  
Lanthanide Ions ◽  
Ion Energy ◽  
Lanthanide Ion

Energy transfer between the 4f energy levels of lanthanide ions and HMME determines whether lanthanide porphyrins can exhibit RTP.

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