“…Besides the utilization in EL devices, some ytterbium complexes have been widely used in NIR imaging field. Among them, ytterbium complexes with fluorinated porphyrins and porpholactones ligands exhibited extraordinary quantum yields and stability, and several meaningful works on the application of ytterbium complexes as NIR probes have been reported by Zhang et al 75 – 77 . Fig.…”
Section: El Mechanisms and Processes Of Re Complexesmentioning
Due to unique photo-physical characteristics, rare earth (RE) complexes play important roles in many fields, for example, telecommunications, life science, and organic light-emitting diodes (OLEDs). Especially, thanks to narrow emission bandwidth and 100% theoretical internal quantum efficiency (IQE), the study of RE complexes in the electroluminescence field has been a hot research topic in recent 30 years. As a leading technology in solid-state light source fields, OLEDs have attracted great interest from academic researchers and commercial endeavors. In the last decades, OLED-based products have trickled into the commercial market and developed quickly into portable display devices. Here, we briefly introduce the luminescent characteristics and electroluminescent (EL) study of RE complexes in material synthesis and device design. Moreover, we emphatically reveal the innovative application of RE complexes as sensitizers in OLEDs. Through experimental validation, the application of RE complexes as sensitizers can realize the complementary advantages of RE complexes and transition metal complexes, leading to significantly improved performances of OLEDs. The application of RE complexes as sensitizers provides a new strategy for designing and developing novel high performances OLEDs.
“…Besides the utilization in EL devices, some ytterbium complexes have been widely used in NIR imaging field. Among them, ytterbium complexes with fluorinated porphyrins and porpholactones ligands exhibited extraordinary quantum yields and stability, and several meaningful works on the application of ytterbium complexes as NIR probes have been reported by Zhang et al 75 – 77 . Fig.…”
Section: El Mechanisms and Processes Of Re Complexesmentioning
Due to unique photo-physical characteristics, rare earth (RE) complexes play important roles in many fields, for example, telecommunications, life science, and organic light-emitting diodes (OLEDs). Especially, thanks to narrow emission bandwidth and 100% theoretical internal quantum efficiency (IQE), the study of RE complexes in the electroluminescence field has been a hot research topic in recent 30 years. As a leading technology in solid-state light source fields, OLEDs have attracted great interest from academic researchers and commercial endeavors. In the last decades, OLED-based products have trickled into the commercial market and developed quickly into portable display devices. Here, we briefly introduce the luminescent characteristics and electroluminescent (EL) study of RE complexes in material synthesis and device design. Moreover, we emphatically reveal the innovative application of RE complexes as sensitizers in OLEDs. Through experimental validation, the application of RE complexes as sensitizers can realize the complementary advantages of RE complexes and transition metal complexes, leading to significantly improved performances of OLEDs. The application of RE complexes as sensitizers provides a new strategy for designing and developing novel high performances OLEDs.
“…NIR fluorescence imaging represents an advanced non-invasive diagnostic technique with reduced auto-fluorescence, improved signal-to-noise ratio and enhanced penetration depth, which attracts considerable attention in recent years. [37][38][39][40] Lanthanide complexes such as Yb, Nd, and Er have emerged as NIR luminescent molecular dyes owing to the intrinsic f-f transition at NIR region. [41][42][43][44] As the nature of f-f transition is forbidden, the NIR luminescence of lanthanides largely relies on the rational design of antenna ligands as the photosensitizers, which is critically challenging for the lack of systematic studies for the relationship between the structures and sensitization effectiveness.…”
Section: Lanthanide Complexes For Bioimaging Therapy and Theranosticsmentioning
The emergence of porpholactone chemistry, discovered over 30 years ago, has significantly stimulated the development of biomimetic tetrapyrrole chemistry. It offers an opportunity, through modifications of non‐pyrrolic building blocks, to clarify the relationship between chemical structure and excited‐state properties, deciphering the structural code for the biological functions of life pigments. With intriguing photophysical properties in the red to near‐infrared (NIR) regions, facile modulation of their electronic nature by fine‐tuning chemical structures, and coordination ability with diverse metal ions, these novel porphyrinoids have favorable prospects in the fields of optical materials, bioimaging and therapy, and catalysis. In this Minireview, we summarize the brief history of porpholactone chemistry, and focus on the studies carried out in our group, particularly on the regioisomeric effect, NIR lanthanide luminescence, and metal catalysis. We outline the perspectives of these compounds in the construction of porpholactone‐related biomedical applications and optical and energy materials, in order to inspire more interest and further advance bioinspired inorganic chemistry and lanthanide chemical biology.
“…ca. 20 000 cm −1 for common ligands 20–22 ) results in low sensitization efficiency. Therefore, ligand design should be aimed at the triplet state energy decrease.…”
Multimetallic neodymium-ytterbium-gadolinium compounds with 9-anthracenate and 9-acridinate anion were tested in order to create the first luminescence thermometer for elevated temperatures. High luminescence intensity and high signal resolution were reached...
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