om1003094_si_002.cif (93.85 kB)

Photofunctionalization of a Pentamethylcyclopentadienyl Ligand with the N-Phenylcarbazolyl Group To Prepare a Highly Luminescent Tb3+ Complex Having a Fast Radiation Rate

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posted on 14.06.2010, 00:00 by Takeshi Yatabe, Hidetaka Nakai, Koichi Nozaki, Tomoo Yamamura, Kiyoshi Isobe
Lanthanide(III) bent-metallocene complexes with a novel photofunctionalized pentamethylcyclopentadienyl ligand having an N-phenylcarbazolyl group (CpPhCar = η5-C5Me4CH2C18H12N), [Ln(CpPhCar)2I(THF)] (Ln = Tb (1), Gd (2)), were prepared and their molecular structures and luminescence properties were investigated. The f−f emission from the terbium metal center of 1 was efficiently sensitized by CpPhCar (ε = 0.88 × 104 M−1 cm−1 at 331 nm, Φ = 0.67 at 330 nm excitation, kr = 1.68 × 103 s−1). Additionally, the solid-state structure of potassium salts of C5-ring (η5-C5R5, R = Me, H) derivatives was uncommonly characterized in CpPhCar.