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PubMed Publications| Keyword search (4,163 papers available) |  |
"Mandl GA" Authored Publications:
| Title: | Cooperative Sensitization Upconversion in Solution Dispersions of Co-Crystal Assemblies of Mononuclear Yb3+ and Eu3+ Complexes | ||||
| Authors: | Sun G, Xie Y, Wang Y, Mandl GA, Maurizio SL, Zhang H, Ottenwaelder X, Capobianco JA, Sun L | ||||
| Link: | https://pubmed.ncbi.nlm.nih.gov/37040148/ | ||||
| DOI: | 10.1002/anie.202304591 | ||||
| Publication: | Angewandte Chemie (International ed. in English) | ||||
| Keywords: | Co-Crystal; Cooperative Sensitization Upconversion; Down-Shifting Luminescence; Lanthanide Complex; Molecular Upconversion Luminescence; | ||||
| PMID: | 37040148 | Category: | Date Added: | 2023-05-04 | |
| Dept Affiliation: |
CNSR
1 School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, China. 2 Department of Chemistry, College of Sciences, Shanghai University, Shanghai, 200444, China. 3 Department of Chemistry and Biochemistry and Centre for NanoScience Research, Concordia University, Montreal, QC H4B 1R6, Canada. 4 State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China. |
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Description: |
Lanthanide upconversion luminescence in nanoparticles has prompted continuous breakthroughs in information storage, temperature sensing, and biomedical applications, among others. Achieving upconversion luminescence at the molecular scale is still a critical challenge in modern chemistry. In this work, we explored the upconversion luminescence of solution dispersions of co-crystals composed of discrete mononuclear Yb(DBM)3 Bpy and Eu(DBM)3 Bpy complexes (DBM: dibenzoylmethane, Bpy: 2,2'-bipyridine). The 613 nm emission of Eu3+ was observed under excitation of Yb3+ at 980 nm. From the series of molecular assemblies studied, the most intense luminescence was obtained for a 1 : 1 molar ratio of Yb3+ : Eu3+ , resulting in a high quantum yield of 0.67 % at 2.1 W cm-2 . The structure and energy transfer mechanism of the assemblies were fully characterized. This is the first example of an Eu3+ -based upconverting system composed of two discrete mononuclear lanthanide complexes present as co-crystals in non-deuterated solution. |
