How Can We Benefit From the Optical Properties of Mn5+ to Make Pigments and Near-Infrared Phosphors?
Апстракт
When tetrahedrally coordinated in crystals, Mn5+ optical centers ([Ar]3d2 electron configuration) always encounter a strong crystal field. Their lower electronic states have an energy progression of 3A2 < 1E < 1A1 < 3T2 < 3T1. The ground state (3A2) is not orbitally degenerate, and the first excited state 1E has almost no nuclear displacement relative to the ground state and can be separated by the low-symmetry ligand field. For these reasons, Mn5+-doped compounds may provide a strong and narrow (FHWM < 5 nm) phosphorescence emission in the near-infrared (1110–1300 nm) which is significantly affected by a nephelauxetic effect. Their strong absorption in the red spectral region, associated with the 3A2 → 3T1(3F) electronic transition, provides intensive turquoise/blue coloration of the materials. Herein, we propose the way to engineer pigments and efficient near-infrared phosphors and demonstrate optical properties of several of them (Mn5+-activated Ca6Ba(PO4)4O [1], Sr3(PO4)2, Ba3(PO4)...2, and Ba3(VO4)2). In addition, recent applications of these materials are highlighted, including luminescence thermometry [2] based on phosphors steady-state [1] and time-resolved [3] near-infrared emission, the latter of which has been demonstrated for biomedical applications.
Извор:
SFKM : 21. Simpozijum fizike kondenzovane materije = SCMP : the 21st symposium on condensed matter physics : book of abstracts, 2023, 14-14Напомена:
- SCMP : the 21st symposium on condensed matter physics : book of abstracts; 26-30 June 2023, Belgrade
Колекције
Институција/група
VinčaTY - CONF AU - Dramićanin, Miroslav PY - 2023 UR - https://vinar.vin.bg.ac.rs/handle/123456789/12417 AB - When tetrahedrally coordinated in crystals, Mn5+ optical centers ([Ar]3d2 electron configuration) always encounter a strong crystal field. Their lower electronic states have an energy progression of 3A2 < 1E < 1A1 < 3T2 < 3T1. The ground state (3A2) is not orbitally degenerate, and the first excited state 1E has almost no nuclear displacement relative to the ground state and can be separated by the low-symmetry ligand field. For these reasons, Mn5+-doped compounds may provide a strong and narrow (FHWM < 5 nm) phosphorescence emission in the near-infrared (1110–1300 nm) which is significantly affected by a nephelauxetic effect. Their strong absorption in the red spectral region, associated with the 3A2 → 3T1(3F) electronic transition, provides intensive turquoise/blue coloration of the materials. Herein, we propose the way to engineer pigments and efficient near-infrared phosphors and demonstrate optical properties of several of them (Mn5+-activated Ca6Ba(PO4)4O [1], Sr3(PO4)2, Ba3(PO4)2, and Ba3(VO4)2). In addition, recent applications of these materials are highlighted, including luminescence thermometry [2] based on phosphors steady-state [1] and time-resolved [3] near-infrared emission, the latter of which has been demonstrated for biomedical applications. C3 - SFKM : 21. Simpozijum fizike kondenzovane materije = SCMP : the 21st symposium on condensed matter physics : book of abstracts T1 - How Can We Benefit From the Optical Properties of Mn5+ to Make Pigments and Near-Infrared Phosphors? SP - 14 EP - 14 UR - https://hdl.handle.net/21.15107/rcub_vinar_12417 ER -
@conference{ author = "Dramićanin, Miroslav", year = "2023", abstract = "When tetrahedrally coordinated in crystals, Mn5+ optical centers ([Ar]3d2 electron configuration) always encounter a strong crystal field. Their lower electronic states have an energy progression of 3A2 < 1E < 1A1 < 3T2 < 3T1. The ground state (3A2) is not orbitally degenerate, and the first excited state 1E has almost no nuclear displacement relative to the ground state and can be separated by the low-symmetry ligand field. For these reasons, Mn5+-doped compounds may provide a strong and narrow (FHWM < 5 nm) phosphorescence emission in the near-infrared (1110–1300 nm) which is significantly affected by a nephelauxetic effect. Their strong absorption in the red spectral region, associated with the 3A2 → 3T1(3F) electronic transition, provides intensive turquoise/blue coloration of the materials. Herein, we propose the way to engineer pigments and efficient near-infrared phosphors and demonstrate optical properties of several of them (Mn5+-activated Ca6Ba(PO4)4O [1], Sr3(PO4)2, Ba3(PO4)2, and Ba3(VO4)2). In addition, recent applications of these materials are highlighted, including luminescence thermometry [2] based on phosphors steady-state [1] and time-resolved [3] near-infrared emission, the latter of which has been demonstrated for biomedical applications.", journal = "SFKM : 21. Simpozijum fizike kondenzovane materije = SCMP : the 21st symposium on condensed matter physics : book of abstracts", title = "How Can We Benefit From the Optical Properties of Mn5+ to Make Pigments and Near-Infrared Phosphors?", pages = "14-14", url = "https://hdl.handle.net/21.15107/rcub_vinar_12417" }
Dramićanin, M.. (2023). How Can We Benefit From the Optical Properties of Mn5+ to Make Pigments and Near-Infrared Phosphors?. in SFKM : 21. Simpozijum fizike kondenzovane materije = SCMP : the 21st symposium on condensed matter physics : book of abstracts, 14-14. https://hdl.handle.net/21.15107/rcub_vinar_12417
Dramićanin M. How Can We Benefit From the Optical Properties of Mn5+ to Make Pigments and Near-Infrared Phosphors?. in SFKM : 21. Simpozijum fizike kondenzovane materije = SCMP : the 21st symposium on condensed matter physics : book of abstracts. 2023;:14-14. https://hdl.handle.net/21.15107/rcub_vinar_12417 .
Dramićanin, Miroslav, "How Can We Benefit From the Optical Properties of Mn5+ to Make Pigments and Near-Infrared Phosphors?" in SFKM : 21. Simpozijum fizike kondenzovane materije = SCMP : the 21st symposium on condensed matter physics : book of abstracts (2023):14-14, https://hdl.handle.net/21.15107/rcub_vinar_12417 .